Its melting point is 2692degC. It also has good thermal and mechanical properties, as well as good corrosion resistance. Its melting is 2692degC. Water and lye are insoluble. Nitric acid, hydrofluoric and sulfuric acids are slightly soluble.
The catalytic types of molybdenum carbide:
1. Hydrogenation Reaction
2. Hydrodenitrogenation HDN & hydrodesulfurization HDS 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- MoC
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. In western developed countries, 80% of molybdenum demand comes from steel. Stainless and low-alloy metals absorb 30% of the molybdenum. Drill bits and cutting tool accounts for 10%. Cast steel makes up 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.
As well, alloys containing molybdenum are used more and more 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 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 various seamless steel tubes. 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 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 are made from rods, wires, and profiles. 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), and turbine discs. 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 containing only 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 vacuum oven.
Due to its high strength, molybdenum makes the ideal electrode in glass manufacturing. It is also the most suitable processing and processing equipment for 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 within the glass melting tanks. As a heating electrode in a glass melt furnace, it can last up to 3 or 5 years.
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