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 similar in many ways to metals. For example, they have a high melting temperature, high boiling temperatures, and a hardness that is second only to that of diamond. They also exhibit good thermal conductivity as well electrical conductivity. 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 vacuum 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 or a vertical tube furnace. Reduced to block TiC at 19002300degC and pulverized to 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 mixed fully in proportion, and heated to 1500-17degC with a high-purity hydrogen stream. Titanium carbide.
Direct carbonization of Titanium Metal:
The carbon is infiltrated by a high-purity stream of hydrogen heated to 1500-17degC. 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 precipitated titanium carbide has a different form depending on the reaction conditions.
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