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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 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 global consumption, molybdenum does indeed have a strong relationship with iron. In western developed countries, 80% of molybdenum demand comes from steel. Stainless steel absorbs about 30% of it, low alloy steel takes another 30%, while drill bits, cutting tools, and cast-steel account for the remaining 10%. The remaining 20% is consumed by molybdenum chemicals and molybdenum lubricants, as well as petroleum refining. The United States consumed 75% molybdenum in 1998.
In addition to electronics, metal processing, and aerospace industries, molybdenum based alloys have been used more frequently.
1. Molybdenum Alloy
TZM is the alloy with the highest strength and most comprehensive properties. The United States uses TZM to manufacture turbine disks for engines. The production of molybdenum in my country, including TZM molybdenum alloy, is not less than 22 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 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 (containing 50% Re), has excellent performance and can even be used close to the melting point. 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 source parts (support material), metal processing tool (die-casting dies, extrusion dies forging dies perforated plugs 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 shortages of tungsten. Molybdenum, according to calculations has twice the “capacity”, of tungsten. The steel that contains 18% tungsten is replaced with the steel that contains 9% molybdenum. Molybdenum’s role in stainless steel is improving corrosion resistance, increasing high strength and improving weldability. You can see that molybdenum has a major role to play in the steel sector.
3. Other Uses
Molybdenum exhibits a very low vapour pressure when working at the pressure and temperature of the vacuum oven. Molybdenum is the material that causes the least contamination to the materials in the vacuum oven.
Due to its high strength, molybdenum makes the ideal electrode in glass manufacturing. It is also the most suitable processing equipment and electrode during rapid heating. 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. Its lifespan as a heating electrode in a glass melting oven can be up to 3 or 5 years.
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