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The most common transition metal carbides are titanium carbide ceramics. TiC is unique because it has unique bonds that are made of metallic, covalent, and ionic bond combinations. TiC has a crystal structure that determines its basic characteristics, including high hardness, high melt point, wear resistance, and electrical conductivity.
Making titanium carbide
Method: A mixture of titanium and carbon, obtained either by high-temperature hydrogen reduction or mixing TiO2 with carbon powder. Blocks are then heated up to 2300-2700 in an electrical furnace, followed by carbonization in H2 or CO. TiC or titanium carbide’s hard, crystalline powder is made by reacting titanium dioxide with carbon black at temperatures above 1800°C. This powder is then compacted using cobalt and nickel to make heat-resistant tools or parts. While it’s less expensive than tungsten carbide, it is also lighter and easier to use in cutting. When combined with the tungsten carbide of the sintered carbide tool material it decreases the chance that the tool will form grooves.
The properties of titanium carbide
TiC, which is light metallic gray in color, contains 20.05% of carbon. TiC is very chemically stable, and nearly inert against hydrochloric acid and sulfuric acid. TiC dissolves easily in hydrofluoric or nitric acid and aqua regia. You can also dissolve it in an alkaline oxygen melt. If heated in a nitrogenous environment, nitrogen can form above 1500°C. TiC reacts with chlorine gas. It tends to oxidize when exposed to high temperatures.
The density of TiC stands at 4.94 g/cm3, with a Mohs Hardness of 9+ and a microhardness (3200kg/mm2), respectively. It also has an elastic modulus (309,706 MPa). The material’s fracture modulus at 3000 2600 is 499.8 and 843.2 MPa respectively at room temperatures. Thermal modulus of fracture at 982 is 107.78-111.92mpa, and at 2200 it’s at 54.4-63.92mpa. The melting temperature of TiC is 3160 degrees C. Room temperature resistivity is 180 250 This conductor can also be used at higher temperatures. It has a thermal expansion coefficient of 4.12 x 10-6/degF between room temperature (593degC) and 593degC (593degC). Thermal conductivity is 0.041 Cal /cm S/degC.
Titan carbide ceramics are used
1. Multiphase materials. Titanium carbide ceramics make up superhard tool materials. They can be combined with TiN (WC), Al2O3 or other materials to create multiphase ceramics. This material has a high melting temperature, great chemical stability and is used for cutting tools. It also wears well. High-speed wire regulating wheel and carbon steel cutting is done with titanium carbide ceramics. This ceramic’s excellent resistance to oxidation and lack of crescent-shaped damage when used with steel makes them a popular choice. A variety of multiphase ceramic tools made with titanium carbide can be used.
2. Titini carbide, a highly wear-resistant coating material, is used to coat the surface. By chemical or physical methods, diamond surfaces are coated with strong carbides in order to make metal or an alloy. This metal or alloy at high temperatures and diamond surface carbon-atoms interface reaction results in the formation stable metal carbides. These carbides are able to bond well with diamond. They can also be penetrated by matrix metal so that they enhance the adhesion of diamond and matrix. Tool life can be prolonged by depositing titanium carbonide films onto the tool.
3. The research on nuclear fusion reactor uses titanium carbide and composite (TiN+TiC), coating materials that can generate tritium resistant permeability layers. They are capable of resisting hydrogen irradiation, high temperature gradients, and thermal cycles.
4. Additionally, titanium carbide has the ability to smelt tin and lead as well as cadmium or zinc. Transparent titanium carbide ceramics make excellent optical materials.
Titanium carbide Supplier
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