Properties And Application Of Tungsten Carbide

(Properties And Application Of Tungsten Carbide)

Tungsten carbide, or Tungsten Carbide is a combination of tungsten (carbon) and other elements. The molecular formula of WC is 195.85.

It’s a hexagonal black crystal that has a metallic luster and hardness very similar to diamond. It’s a great conductor of heat and electricity. Tungsten carbide can’t be dissolved in water, hydrochloric, or sulfuric acids. However, it is easily soluble and dissolves in mixed acid of hydrofluoric acid and nitric acid. Pure tungsten carbide is fragile. Tiny amounts of cobalt or titanium can reduce brittleness. Tungsten carbide can be used to cut steel by adding titanium carbide, tantalum caride, or any combination thereof. This improves the anti-knock ability. Tungsten carbide has stable chemical properties. Tungsten carbid powder is used to produce cemented carbide.

There are two kinds of carbides that can be made by the tungsten carbon binary system: W2C or WC. Among them is WC, which is used as the raw material to make cemented carbide. It also serves as a raw material powder that is essential in order to prepare high-wear coatings for thermal spraying. WC exhibits high hardness and an unusually high temperature hardness. Co can wet WC. Ni. Fe. WC. WC* is wettable by cobalt melt. If the temperature rises above the metal’s melting point, then WC is easily dissolved. However, when heat is decreased, WC is capable of precipitating. You can use these excellent properties to make cobalt and nickel the binder phase materials. Then, sinter or coat at high temperatures to produce a wear-resistant coating.

Its weak resistance against high-temperature oxidation is the main drawback to WC. It will oxidize in air between 500-800 degrees Celsius. But it can quickly be resolved by W2C and carbon when exposed to intense heat. You can pre-protect the WC particles using a heat-resistant, oxidation resistant metal as the layer or bonding phase. It is also possible to solidify it with TaC and TIC. Composite carbides can be formed to enhance the heat-resistant or oxidation-resistant characteristics of WC. WC can be heated up to 2850 degrees Celsius under Ar conditions, but it is stable and does not react with high-temperature nitrogen.

W2C has higher melting points and harderness than WC. With WC, it can be formed into a W2C+WC electroctic combination. Because it has a lower melting point, casting is simple. You can call it “cast-tungsten carbide” or “fusibletungstencarbide”. The mass is approximately 3.8%20%, which includes 78%80% and 20%22% respectively of W2C (mass), and WC (mass). Cast tungsten carbid is an inexpensive, hard-wearing material.

The WC powder can be combined with iron-, nickel, and cobalt-based self-fusible powders as well as nickel-aluminium composite powders. It is commonly used for the preparation of high-wear-resistant coatings. Tungsten carbide powder is mostly used for thermal spraying a wear-resistant coat. While protective atmosphere plasma spraying and vacuum plasma spraying are possible, adhesion to the sheet may not be as good.

According to scientists, this reaction can achieve a total PX yield of up to 90%. You can get a maximum yield of 90% in this PX reaction.

Petrochemical products require essential aromatic hydrocarbons. PX, which is the most essential aromatic hydrocarbon, is the primary chemical raw material used to produce three important synthetic materials: synthetic resin (synthetic fibre), synthetic rubber (synthetic rubber). In order to address the shortage of PX, the research group is committed to developing and using renewable biomass resources. The team chose to transform aromatic hydrocarbons products into PX, as well as to create a high-selector synthetic route, from biomass to toluene.

Acrolein was chosen by the researchers as the biofuel platform substrate. A six-membered par-substituent with Lewis acid ionic solution was first created by the Diels Alder react. Ring intermediate-4-methyl-3-cyclohexene formaldehyde. Subsequently, under the effect of tungsten carbide catalyst, this intermediate produced PX through continuous gas-phase dehydrogenation-hydrodeoxygenation reaction. As high as 90% was the total PX yield in this two-step process. You can make other bio-based aromatic carbons by changing their substrate molecular substitutions and functional group. The single product yield is 80%-92%.

As a catalyst, the research team employed tungsten carbide powder to produce a highly-coupled reaction between dehydroaromatization as well as hydrodeoxygenation via intramolecular water transfer. The surface shear mechanism of tungsten-carbide reaction in this process is totally different from traditional precious metal catalysis. This means that carbon atoms may be kept in the product at 100%. Water, the principal byproduct of this process, facilitates separation of the PX-product. This research provides a fresh idea to explore the potential for the production of aromatic chemicals with biomass.

In addition, when we think about tungsten, the first thing that pops into our minds is the filament. Tungsten is an uncommon high-melting alloy and has the highest melting point of any unalloyed metallic. Both tungsten and aluminum have extreme electrical conductivity. Edison was a great inventor who used tungsten for making filament. Tungsten has a wide range of applications in modern technology, both in its pure metal state as well as in the alloy system state. It’s also called an “industrial tooth” as well as an “industrial salt”. This is a strategic essential metal. Current consumption shows that tungsten ore can only be used for approximately 140 years. Recycling tungsten could make up any shortfalls in storage of tungsten.

There are many economic and environmental advantages to recycling tungsten. It has a greater tungsten percentage than the original tungsten, particularly sintered, which can have a higher tungsten level than 90%. Extracting tungsten from tungsten carbonide and other tungsten scraps is a cheaper way to extract tungsten than by using hydrochloric acids. It also results in fewer wastewater emissions, which can reduce the cost of production and help avoid environmental pollution.

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(Properties And Application Of Tungsten Carbide)