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 titanium atoms. These bonded atoms are comparable to metals in terms of melting point, boiling point, hardness and thermal conductivity. They also show superconductivity when temperatures are extremely low. TiC can be used in the production of 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 then pressed into a tube furnace in hydrogen using either a horizontal carbon furnace or a tube furnace vertical. At 19002300degC reduction to get block TiC and then pulverization for titanium carbide product. Or, using carbon black and sponge titanium as raw materials. Carbon black (or titanium alloy or titanium waste recovered in carbide solid solutions) and sponge Titanium are fully mixed proportionally and heated to 1400-1500degC with a high-purity hydrogen stream. Titanium carbide.
Direct carbonization of Titanium Metal:
Titanium powder (decomposed titanium hydride or reduced by sodium, less than 325 mesh), mixed with black carbon and molded in a container of graphite under pressure of approximately 0.98 Pa. It was then heated to 1500-17degC using a high-purity stream of hydrogen to infiltrate carbon. The reaction temperature, holding time and particle size are dependent on the raw material.
Gas phase reaction method:
Hydrocarbons containing hydrogen (benzene and methane) are mixed into the steam of titanium chloride. 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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