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Sorted out the properties and uses of graphite for you

Properties and advantages of graphite Graphite is a kind of carbonized material and has many advantages such as high-temperature resistance, corrosion resistance, electrical conductivity, heat conduction, lubrication, low surface energy, lightweight, and high carbonization yield.

General-purpose of graphite
It is widely used in the fields of metallurgy, chemical industry, machinery, electronics, aerospace, national defense and military industry. Graphite is made into refractory materials, casting materials, lubricants, brake linings, pencil leads, carbon brushes, batteries, expanded graphite and other materials.

Several important uses of graphite?
1. Refractory
In the smelting industry, graphite is used to make graphite crucibles, as protective agents for steel ingots, and as magnesia-carbon bricks for the lining smelting furnaces.
2. Conductive materials
In the electrical industry, graphite is used as electrodes, brushes, electric rods, carbon nanotubes, and coatings for television picture tubes.
3. Wear-resistant materials and lubricants
In much mechanical equipment, graphite is used as a wear-resistant and lubricating material, which can slide at a speed of 100 meters per second within a temperature of -200~2000, which can make the equipment useless or less lubricating oil.
4. Sealing material
Use flexible graphite to make centrifugal pumps, water turbines, steam turbines, and piston ring gaskets and seals for transporting corrosive media or equipment.
5. Corrosion-resistant materials
Utensils, pipes and equipment made of graphite are resistant to corrosion by various corrosive gases and liquids and are widely used in equipment in the fields of petroleum, chemical industry, and hydrometallurgy.
6. Heat insulation, high-temperature resistance and radiation protection material
Graphite can be used as a neutron moderator in nuclear reactors and rocket nozzles, missile nose cones, aerospace equipment parts, thermal insulation materials, radiation materials, etc.

Graphite’s high value-added application product types
With the continuous innovation of science and technology, graphite high value-added products are gradually being created. For example, expanded graphite, isotropic graphite, fluorinated graphite, spherical graphite for lithium-ion batteries, metal or graphite composite materials have been widely used in energy conservation and environmental protection, new energy, new-generation information technology, new energy vehicles, high-end equipment manufacturing, Most strategic emerging industries such as biology. Generally speaking, almost all important development directions are inseparable from graphite.

Graphite represents the types and applications of graphene products
The current research on graphene has also achieved a major breakthrough. Products such as high-purity graphite, nuclear graphite, fluorinated graphite, silicon-impregnated graphite, graphite derivatives or graphite composites have been mass-produced at home and abroad, and are widely used in environmental protection, High-tech industries such as nuclear industry, electronics and semiconductors.
Physicists use graphene to generate clean, unlimited power generation circuits
A team of physicists at the University of Arkansas has successfully developed a circuit that can capture the thermal motion of graphene and convert it into an electric current. The graphene-based energy harvesting circuit will be integrated into the chip to provide a clean, unlimited low-voltage power supply for small devices or sensors.

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Properties and advantages of graphite Graphite is a kind of carbonized material and has many advantages such as high-temperature resistance, corrosion resistance, electrical conductivity, heat […]

Are Both Diamond and Graphite Carbon?

Carbon is found widely in the crust of the earth and its atmosphere. Carbon is essential to human life and production.
Diamonds are forever

Diamond, the hardest substance found in nature. Its hardness exceeds that of corundum by 4 times and quartz by 8 times.

What is the reason for diamond’s high hardness?

In the 1st Century AD, diamond was first mentioned in literature. During the next 1,600-year period, however, no one knew the actual composition of diamond. The “material” of diamonds was only discovered in the second half the 18th century.

French chemist Lavoisier (1743) and other scientists conducted experiments during the 70s and 90s in the 18th century on diamonds burned with oxygen. The result was carbon dioxide, which is an oxygen-carbon mixture. substance. The carbon in this case comes from diamond. These experiments confirmed that carbon is the main component of diamond.

Although diamonds are composed of carbon, the reason for their high hardness is still unknown. Carbon is used in the production of pencil lead. But graphite has a softer mineral than human nails.

Why is the difference between diamond and graphite?

William Bragg (1862-1942), British physicist and his son, answered this question only in 1913. Bragg (1862-1942) and his son used X rays to study diamonds, and the arrangement atoms. They discovered that every carbon atom was tightly combined with four carbon atoms surrounding it to form a dense, three-dimensional structure in the diamond. This unique structure has never been observed in other minerals. This dense structure gives diamonds a density of 3.5g/cm, about 1.5 times that of graphite. This dense structure is what gives diamonds their greatest hardness. Other words, diamonds are formed when carbon atoms are squeezed.

Synthetic diamond

It is the hardest material in nature. As such, it has many industrial applications, such as fine materials for abrasives, cutting tools with high hardness, different drill bits, and dies for wire drawing. It is also used to make precision instruments.

Diamond also has excellent properties like super-hardness. It is called the “king” of hardness and the “king” of gems. The angle of diamonds crystals is 54deg44’8″. In the 1950s the United States successfully created synthetic diamonds by using graphite. Synthetic diamonds can be found in many areas of production and daily life. However, it is difficult to create large diamond particles.

Graphite Graphite Graphite is a dark grey opaque fine-scale solid with lustrous metallic luster. It is soft with a greasy feeling and excellent electrical conductivity. The graphite atoms form a layered, planar structure. Because the bonds between the layers are relatively weak, it is very easy to separate and slide between them. Main functions: making pencils, electrodes, tram cables, etc.

Fullerene was discovered as the fourth carbon crystal in 1985. It is found after graphite, linear carbon and diamond. Fullerene was discovered as a new industrial material. Its hardness exceeds diamond and its stiffness (ductility), is superior to steel.

It’s 100 times stronger than copper. It conducts electricity better, is more conductive, and weighs only 1/6 as much.

The columnar and tubular molecules can also be called carbon nanotubes, or Bucky Tubes. C60 is aromatic, soluble with benzene and sauce red. It can be produced by resisting heating graphite or using the arc method. C60 may be a superlubricant due to its lubricity. C60 with metal doping has superconductivity. It is a promising material. C60 is also used in many different fields, including semiconductors.

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Carbon is found widely in the crust of the earth and its atmosphere. Carbon is essential to human life and production. Diamonds are forever Diamond, […]

Cemented Carbide Materials Tungsten Carbide Powder

Tungsten carbide Compound composed of carbon and tungsten with the molecular formula WC. The molecular weight is 195.85. Tungsten carbide is a hexagonal crystal that is black and has a metallic luster. It is hard and is similar to diamond.
Tunsten Carbide Properties:
Tungsten carburide is a hexagonal black crystal. It dissolves in hydrofluoric and nitric acids and aqua regia but not in cold water. The chemical properties are stable of tungsten carbide.

Tungsten carbide is a powdery gray color with a metallic sheen. It is insoluble with water, hydrochloric and sulfuric acids but soluble when mixed with nitric or hydrofluoric acid. Pure tungsten carbide is fragile. By adding titanium, cobalt or other metals, this fragility can be reduced.

Tungsten Carbide Application:
Tungsten carbide powder is used to make steel cutting tools. It’s often mixed with tantalum or titanium carbide. Tungsten carbide powder is used for the production of cemented carbide.

Tungsten carbide is used in many applications, including high-speed cutters, furnace structural materials for jet engines, cermet material, resistance heating components, etc.

Tungsten-carbide powder is used for cutting tools, wearable parts, melting pots for metals like copper, cobalt, or bismuth as well as wear-resistant semiconductor film.

Tungsten carbide is used for super-hard, wear-resistant tool materials. It can also form a solid mixture with many carbides. WC-TiC-Co cement carbide tools were widely used. It can also reduce the sintering temp and maintain good performance when used as an additive to NbC C and TaC C ternary system carburides. It can also be used for aerospace materials.

Tungsten (WC), powder, is made by combining tungsten (WO3) with graphite under a reducing atmospheric at temperatures between 1400 and 1600 degrees.

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Tungsten carbide Compound composed of carbon and tungsten with the molecular formula WC. The molecular weight is 195.85. Tungsten carbide is a hexagonal crystal that […]

Catalyst Iron Carbide with Broad Application Prospects

Iron Carbide Features

Iron carbide has high conductivity and electrochemical performance. It is considered to be the next-generation of anode material for lithium-ion batteries. strong>Iron carbide/strong>, a kind of transition metal carbide, has high conductivity, electrochemical stability and excellent performance. It is regarded as the next-generation anode material for lithium-ion batteries.

Transition Metal Carbide Nanostructures Attract Attention

The nanostructures of the transition metal carbides, in particular iron carbide nanomaterials have received much attention from researchers due to their excellent stability, high efficiency catalyst activity, and good biological compatibility. Features: Has important applications in the fields such as nanomagnetism and Tropsch catalysis (Tropsch), electrochemical energy storage conversion and biomedicine. Although commonly used methods of preparation, such as the solid-phase reaction and sonochemical methods and sol-gel, can lead to an agglomeration or difficulty in controlling phase, they are still widely used.

Iron Carbide Catalyst: Application

Zhao Yujun’s Tianjin team has been making breakthroughs by using Fe5C2 catalysts in the DMO system to produce alcohol. The researchers developed an innovative hydrogen and mixed gas carbonization, resulting in a relatively durable iron carbide catalyst.

Further studies found that the DMO hydrogenation reaction route using Fe5C2 was different from that of copper-based catalysts, in part because Fe5C2 could selectively activate -OH on the intermediate product methylglycolate (MG), so after adding hydrogen the reaction produced methyl acetate instead of ethylene glycol (EG) when copper-based cats were used. MA can be further hydrogenated on Fe5C2 with high selectivity to produce alcohol. Fe5C2 did not have significant CC bond-breaking activity. The higher reaction temperature (260 degrees Celsius) resulted in a 90% yield of ethanol, while the by-products were mainly MA. Fe5C2 catalysts are clearly superior to copper-based catalysts in terms of performance.

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Iron Carbide Features Iron carbide has high conductivity and electrochemical performance. It is considered to be the next-generation of anode material for lithium-ion batteries. strong>Iron […]

The Preparation And Application of Aluminum Carbide Powder

Aluminum carbide The molecular formula of Al4C3 is used to describe this inorganic compound. Aluminum carbide comes as a crystal or powder that is yellow, greenish gray or even bluish. Aluminum carbide powder decomposes in high temperatures, and is then dissolved by cold water into aluminum hydroxide and methane.

The preparation of aluminum carbide

Aluminum carbide is produced by heating alumina with coke in a furnace. Aluminum carbide Al4C3 comes from the direct combination of two metals at high temperatures.
Then, spread carbon powder over the top of a tightly packed layer in a clay pot. Cover the crucible with a lid. Fill in all gaps with a refractory mixture of asbestos fibers and refractory soil. After pre-drying the crucible, the mixture should be heated to a temperature no lower than 1200degC. Higher temperatures can help the reaction progress.

After cooling, the product will be treated with dilute alkaline or hydrochloric acids (or diluted hydrochloric solution) to remove excess aluminium. After obtaining the aluminum carbide as a fine crystalline, powder, it is washed to remove aluminum chloride with water, then quickly wiped away with alcohol. The product is then dried in a box set at 80-90degC. The product contains an excessive amount of aluminum chloride.

Aluminum carbide itself is colorless. However, the products that are made using the above method can have a variety of colors because the raw materials used to make them contain impurities.

A pure product free of aluminum nitride is obtained when the calculated quantity of the mixture of aluminium and soot are calcined with hydrogen. This calcination is carried out between 1800degC and 1900degC, for a duration of 2 to3 hours. The resultant material is then ground, and again calcined to the temperature above.

Aluminum Carbide Application

Aluminum carbide has many applications, including in the production of methane and catalysts. Other typical uses of aluminum carbide are:
1. When combined with silicon carbide, the finely distributed aluminum carbide in the aluminum matrix reduces the tendency of material to creep.

2. The aluminum-aluminum carbide composite material can be made through mechanical alloying by grinding graphite and aluminum powder together.

3. Aluminum carbide may be used as abrasive for high-speed cutting instruments. Its hardness almost matches that of topaz.

4. Aluminum carbide, used as a firework additive, can be used, for instance, to produce the effect of fireflies.

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Aluminum carbide The molecular formula of Al4C3 is used to describe this inorganic compound. Aluminum carbide comes as a crystal or powder that is yellow, […]

What color are ytterbium oxide and erbium oxide?

Introduction to the knowledge of ytterbium oxide and erbium oxide Ytterbium oxide , also called ytterbium trioxide, has the chemical formula Yb2O3. The pure product is a white powder, and it is yellowish-brown when it contains a small amount of thorium oxide. Insoluble in water and cold acid, soluble in warm dilute acid.
Erbium oxide is a pink powder with the chemical formula Er2O3. It easily absorbs moisture and carbon dioxide, and becomes a hexagonal crystal when heated to 1300 , and does not melt. Then is synthesized from lanthanum metal. In 1843, it was partially isolated by Carl Gustaf Mosander. In 1905, Georges Urbain and Charles James proved for the first time that it has a pure pink cubic crystal structure. Oxidation can also be hexagonal under certain conditions.

How to prepare ytterbium oxide and erbium oxide
Preparation method of ytterbium oxide
Taking brown yttrium niobium ore as raw material, through multi-step separation to obtain rich thulium and ytterbium aqueous solution, oxalic acid precipitation separation, filtration, and burning to prepare ytterbium oxide.
Preparation method of erbium oxide
After separation and burning, erbium oxide is obtained by reacting nitric acid or sulfuric acid solution with alkali.

Uses of ytterbium oxide and erbium oxide
Ytterbium Oxide: Mainly used in the manufacture of computer magnetic bubble materials, so that magnetic bubble storage has the characteristics of high speed, small size, large capacity, and multi-function.
Erbium oxide: Erbium oxide is mainly used as an additive for yttrium iron garnet and as a control material for nuclear reactors. It is also used to make special light-emitting glass and infrared absorption glass. It is also used as a glass colorant. The only stable compound is Er2O3. Oxidation is a powdery substance with a cubic and monoclinic structure centered on the body. The magnetic moment of Er2O3 is also larger, 9.5MB. Other properties and preparation methods of oxidation properties are the same as those of lanthanides. Oxidation can be made into pink glass.

How to store powder
A humid environment will affect the dispersion performance and use the effect of the powder. Therefore, it should be sealed in a vacuum package and stored in a cool and dry room. It should not be exposed to the air. In addition, avoid using powder under pressure.
The price of ytterbium oxide and erbium oxide
In the market, the price of nano-powder raw materials is very transparent. We will provide you with high-quality powders. Please contact us to obtain a satisfactory quotation.
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Introduction to the knowledge of ytterbium oxide and erbium oxide Ytterbium oxide , also called ytterbium trioxide, has the chemical formula Yb2O3. The pure product […]

Application and development history of Nano gold solution

Nano-gold solution is made of high-purity gold as raw material. After a special new processing technology, the gold is made into a particle size below 15nm, which greatly improves the inherent characteristics of gold, such as catalytic effect, free radical removal effect, dispersion effect, etc. Physical index
Indicator name: AuS-WM1000
Appearance: purple liquid
Solid content: >=1000ppm
PH: 7.0+-0.5
Particle size: <=15nm
Density: 1.01g/ml
Gold purity: 99.99%
Preparation method
Prepare a HAuCl4*4H2O solution with a concentration of 2.44×10-3 mol/L, a Na3C6H5O7*2H2O solution with a concentration of 3.43×10-2 mol/L, a PVP solution with a concentration of 1.00×10-4 mol/L, and the concentration is 0.391 mol/L NaBH4 solution is available for use. Add 10 mL of the chloroauric acid solution, 10 mL or no protective agent solution, and 80 mL of tri-distilled water into the beaker. Place the beaker on a digital speed constant temperature magnetic stirrer, stir while heating, and set the stirring speed to 600 r/min, heating to 75, constant temperature for 2 minutes, pipette a certain volume of reducing agent (Na3C6H5O7 or NaBH4) solution, quickly add it to the above mixture at once, start timing, keep the liquid color constant and continue heating for a period of time The total time is 9 minutes, stop heating, continue to stir for 5 minutes, stop stirring, cool to room temperature, the obtained liquid is Nano gold solution .

Characteristic
Efficient catalysis;
Free radical removal effect;
Antibacterial effect;
Strong antioxidant capacity;
to promote metabolism;
Corrosion resistance;
Friction resistance;
Anti-corrosion performance;
Will not be allergic to any skin;
Application
Coloring agent for food, glass and organisms.
Used for genetic identification technology.
Used for the refining of environmental purification products.
Preservative for food and cosmetics.
When added to cosmetics, it has whitening, anti-aging, and moisturizing effects.
Production of antibacterial, antibacterial, anti-inflammatory drugs, medical equipment, health care products, beauty care equipment.
Produce all kinds of daily necessities, food, drinks, etc. which are closely related to people’s lives. Such as Nano-gold soap, toothbrushes, various facial masks.
Development History
Since Paracelsus, the founder of modern European chemistry, an outstanding physician and chemist in the 16th century, prepared “drinking gold” for the treatment of mental illnesses, Nano gold solution has been on the stage of science. In 1857, when British scientist Faraday was studying Dalton’s theory, he used gold chloride to reduce a solution containing gold nanoparticles and found that after adding a small amount of electrolyte, the solution changed from ruby color to blue, and finally agglomerated to nothing. Color and the addition of gelatin and other macromolecular substances can prevent this change. Although the reason was not known at the time, his discovery laid the scientific foundation for the application of Nano-gold. In 1885, the Nano-gold solution was often used as the main ingredient in the treatment of alcoholism in the United States; in 1890, Dr. Koch discovered that Mycobacterium tuberculosis could not survive on the surface of gold; in 1890, Nano-gold was used to treat arthritis; in 1935, Chicago surgical expert Edward et al. discovered Nano gold solution can effectively relieve the patient’s pain and strengthen the body. In 1939, Kausche and Ruska used an electron microscope to observe the tobacco mosaic virus labeled with gold particles, which was in the form of fine particles with high electron density. In 1971, Faulk and Taylor first used immunogold staining (IGS) to combine rabbit anti-Salmonella antiserum with Nano-gold particles, and used direct immunocytochemistry to detect the surface antigen of Salmonella, pioneering Nano-gold immunolabeling technology.

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Nano-gold solution is made of high-purity gold as raw material. After a special new processing technology, the gold is made into a particle size below […]

Spherical Aluminum oxide Powder Properties And Applications

Aluminum oxide spherical Aluminum oxide a-phase produced by high-temperature melting spraying has high sphericity. It performs well as a ceramic raw material and a rubber filler.

Spherical aluminum oxide powder Properties

1. High Filling Aluminum oxide with a spherical shape and wide distribution of particle sizes is a good product. It can fill rubber with high density. The mixture will have low viscosity, good fluidity and low viscosity.

2. High thermal conductivity
A mixture with good heat dissipation and high thermal conductivity can be achieved by filling spherical silicon powder with aluminum oxide.

3. Low Wear
Aluminum oxide spherical is less abrasive than other types of aluminum oxide. This means that equipment such as kneaders or molding machines can last longer.

Spherical aluminum oxide powder Applications

1. Use as a ceramic material
Spherical Aluminum Oxide has good compression-molding and sintering qualities, which are extremely beneficial for producing high-quality ceramics.

2. It is used as a material for grinding and polishing
You can prevent scratches by using spherical Aluminum Oxide as a polishing agent.

3. It is used in the petrochemical industries
In the petrochemical industries, the requirements for the distribution of pore sizes and the structure of the aluminum carrier are increasing. To control the pore sizes and distributions of the catalyst carrier particles, it is possible to adjust the particle size configuration for the spherical powder.

4. Catalysts:
Aluminum oxide spheres can be used as catalysts to reduce abrasion. They also increase the lifespan of the catalysts, which will lower the production costs.

5. Surface protective coating
Spraying spherical aluminum powder on plastics, metals, etc. Surface protection for machinery, knives and chemical pipelines can be improved by using this powder.

6. For luminescent material
Aluminum oxide powder spherical has a high density which reduces the scattering and loss of light.

7. Electronics industry
The excellent properties of spherical aluminium oxide in terms electrical, mechanical and thermal properties make it widely used in semiconductor electronic packaging.

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Aluminum oxide spherical Aluminum oxide a-phase produced by high-temperature melting spraying has high sphericity. It performs well as a ceramic raw material and a rubber […]

The Properties And Application of Manganese Dioxide Powder

Manganese dioxide The chemical formula for this inorganic compound is MnO2. Manganese oxide is an amorphous black powder or orthorhombic black crystal.

Manganese Dioxide Properties:

Manganese dioxide is insoluble with water, weak acid and weak alkali. It also has a low solubility in nitric, cold sulfuric, or nitric acids. Manganese dioxide is dissolved in concentrated hydrochloric acids when heated. This produces chlorine gas.
Manganese dioxide, also known as amphoteric iron oxide, is a compound reaction in molten alkali system. A corresponding salt is available in the form of perovskite structures such as BaMnO3 and SrMnO3 obtained by a reaction between molten alkali systems. There is also manganese-tetrachloride.

Manganese oxide is oxidizing if it encounters a reductant. In order to get brown-black Manganese Trioxide, manganese dioxide is heated with ammonia in a steam.

It also becomes reducible when manganese oxide is in contact with strong oxidants. Mixing manganese dioxide with potassium carbonate or potassium nitrate and melting it will produce a dark green liquid. This liquid can then be dissolved in cold water to form potassium manganate. It is an oxidant that can be very strong in acid medium.

Manganese Dioxide Application:

Manganese dioxide can be used as a depolarizer in dry batteries, in synthesis as a catalyst, decolorizer and iron remover. It is also used in glass, enamel and as a coloring and decolorizer agent.

Manganese oxide is used in the production of metallic manganese alloys, gasmasks, ferrites and other electronic materials. Manganese oxide can be used in rubber to increase viscosity. Manganese dioxide is also used as a chemical catalyst.

In the laboratory manganese dioxide is used to catalyze the decomposition of hydrogen peroxide to produce oxygen, as well as to catalyze decomposition of potassium chlorate to produce oxygen. Manganese dioxide is combined with elemental aluminum powder to form manganese and its oxide. Yellow glass, pigments and other uses.

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Manganese dioxide The chemical formula for this inorganic compound is MnO2. Manganese oxide is an amorphous black powder or orthorhombic black crystal. Manganese Dioxide Properties: […]

The Properties And Application of Gallium nitride

What is Gallium Nitride (Galium Nitride)?
Inorganic gallium nitride has the chemical formula GaN. It is made up of gallium, nitrogen and a chemical compound. It is a direct-bandgap semiconductor that has been widely used in light emitting diodes (LEDs) since 1990. The compound’s structure is similar to that of wurtzite and has high hardness. Gallium Nitride has an energy gap of about 3.4 electron-volts. This can be useful in high-power, high-speed optoelectronic component. Gallium nitride is used, for instance, in violet lasers. You can use it without nonlinear semi-conductor pumped solid state lasers.

In 2014, Yuki Akasaki, professor at Nagoya University in Japan as well as Hiroshi Amao, professor of Nagoya University in Japan won the Nobel Prize in Physics. Shuji Nakamura, a professor of University of California Santa Barbara, also received the prize.

Applications of GaN

GaN series has low heat production rate and high electric breakdown field. They are important materials for developing high-temperature and high power electronic devices, as well high-frequency microwave devices.

GaN materials are ideal for light-emitting devices with short wavelengths. GaN, and its alloys, cover a wide range of spectral wavelengths from red through to ultraviolet.

GaN is the hottest area of research in semiconductors. This is a new semiconductor material used for microelectronics and optoelectronics. Along with other semiconductor materials, such as SIC or diamond, this material is known as a successor to the original generation of Ge and Si.

Semiconductor material, second-generation GaAs materials, InP compounds semiconductor materials and third generation semiconductor materials. It has a large bandgap and strong atomic bonds. It also has high thermal conductivity (nearly uncorroded by acid) as well as strong radiation resistance. It’s used in photoelectronics and devices that require high temperatures and power.

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What is Gallium Nitride (Galium Nitride)? Inorganic gallium nitride has the chemical formula GaN. It is made up of gallium, nitrogen and a chemical compound. […]

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