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What is titanium carbide?
TiC is a light gray cubic crystal, which is not soluble in water. It has high chemical stability and can be dissolved by aqua regia or nitric and hydrofluoric acids.
TiC has a metallic luster and is gray with an iron grey color. It belongs to a simple cubic NaCl structure. The lattice is 0.4329 nanometers. The space group Fm3m. TiC has strong covalent bonding between the carbon atoms, and the titanium atoms. These bonded atoms are similar in many ways to metals. For example, they have a high melting temperature, high boiling temperatures, high hardness and good electrical conductivity. They also show superconductivity and thermal conductivity at very low temperatures. TiC can be used to produce cermets as well as heat-resistant metals, cemented carbide, anti-wear material, high temperature radiation materials, and other high-temperature equipment.
Method of synthesis of titanium carbide
As raw materials, titanium dioxide and carbon black are used.
The dry powder mixture of high-purity Titanium dioxide and Carbon Black is mixed proportionally and pressed into a tube furnace in hydrogen using either a horizontal carbon furnace or vertical carbon furnace. At 19002300degC reduction to get block TiC and then pulverization for titanium carbide product. Alternatively, using carbon black and sponge titanium as raw materials. Carbon black (or titanium alloy or titanium waste recovered in carbide solid solutions) is fully mixed with sponge titanium and heated at 15001700degC. Titanium carbide.
Direct carbonization of Titanium Metal:
Titanium powder (either reduced by sodium, or decomposed titanium hydride; less than 325 mesh), mixed with black carbon, is molded and heated at 1500-17degC using a high-purity stream of hydrogen in order to infiltrate carbon. The reaction temperature, holding time and particle size are dependent on the raw material.
Gas phase reaction method:
The steam from the titanium tetrachloride mixture is then mixed with hydrocarbons containing hydrogen (benzene, methane etc.). After induction heating (or other methods), the steam is sent to deposit titanium carbide on the substrate. The reaction precipitates titania carbide on substrate. The precipitation of titanium carbide differs depending on the conditions of the reaction, including the ratio of reaction gas to gas flow, the temperature of the reaction, and gas flow rates.
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