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The properties of Molybdenum Carbide
The chemical formula of
MoC is the molecular weight and it is 107.95.
Its melting point is 2692degC. It also has good mechanical and thermal stability. Its melting is 2692degC. Water and lye are insoluble. Nitric acid, hydrofluoric and sulfuric acids are slightly soluble.
The catalytic reactions of molybdenum carbide:
1. Hydrogenation Reaction
2. Hydrodesulfurization HDS, and hydrodenitrogenation HDN reactions;
3. Isomerization is a reaction.
4. Hydrocarbon conversion and Synthesis reaction
5. Applications in ammonia syntheses
Preparation of molybdenum carbide
Preparation principle: Mo+C-
The two elements may be directly combined, or they can be prepared through the reaction of molybdenum oxide and molybdate under a reducing atmospheric at around 800degC.
Applications of Molybdenum Carbide
In terms of the global structure of consumption, molybdenum does indeed work with iron. Molybdenum demand in developed western countries is 80% from steel. Stainless and low-alloy metals absorb 30% of molybdenum while cast steel and drill bits absorb 10%. The remaining 20% is consumed by molybdenum chemicals and molybdenum lubricants, as well as petroleum refinery. The United States consumed 75% molybdenum in 1998.
Molybdenum-based materials are used increasingly in electronic, metal processing, and aerospace industries.
1. Molybdenum Alloy
TZM is the alloy with the highest strength and most comprehensive properties. The United States uses TZM for turbine disks in engines and molybdenum is used for 15% of total molybdenum. The production of molybdenum in my country, including TZM molybdenum alloy, is not less than 22 different grades. Early 1990s, my country’s production of molybdenum alloys and molybdenum materials was around 200 tons.
TZM & TZC Molybdenum Alloys offer superior mechanical properties to pure molybdenum. They are widely used for high-tech moulds, structural parts, and other high-tech applications. In the early 20th century, we were able to make hot-perforated plugs for seamless steel pipes. The sintered molybdenum sinter plugs manufactured using powder smelting reduce the raw material consumption (50%) and increase the average service life 1.5 to 2x.
The seamless tube of molybdenum alloy rhenium (containing 50% Re), has excellent high-performance and can be used near its melting temperature. It can also be used to make the brackets, rings, grids, and other parts for the thermowell as well as the cathode.
It is easier to process molybdenum than tungsten. Therefore, plates, strips, foils, etc. Tubes. rods. wires. profiles. etc. Used in electronic tubes, electric light sources, parts (support material), metal processing tool (die-casting dies and extrusions dies, forgings dies), perforated plugs and liquid metal filter screens, turbine discs etc. Used in many components.
2. Alloying components of steel
The use of molybdenum as an alloying component, along with nickel and chromium can help reduce embrittlement, which is often seen in alloy steels when heated. United States took the lead by using molybdenum in high-speed alloys instead of tungsten to solve the shortage of resources. Molybdenum, according to calculations has twice the “capacity”, of tungsten. The steel that contains 18% tungsten is replaced by steel that contains 9% molybdenum. Molybdenum’s role in stainless steel is to enhance corrosion resistance, strength and weldability. You can see that molybdenum has a major role to play in the steel sector.
Molybdenum exhibits a very low vapour pressure when working at the pressure and temperature of a vacuum furnace. Molybdenum is the material that causes the least contamination to the materials in the furnace.
Due to its high strength, molybdenum makes the ideal electrode in glass manufacturing. It is also the best material for processing and equipment when rapid heating occurs. Because molybdenum is chemically incompatible with most glass components, it will not produce harmful color changes due to the small amount of molybdenum that may be dissolved in a glass melting tank. As a heating electrode in a glass melt furnace, it can last up to 3 or 5 years.
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