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What is titanium carbide?
TiC is a light gray cubic crystal, which is not soluble in water. It has a high chemical stability and can be dissolved by aqua regia and 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, good electrical conductivity and thermal conductivity. They also show superconductivity when exposed to extremely 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 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 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 15001700degC with a high-purity hydrogen stream. Titanium carbide.
Direct carbonization of Titanium Metal:
Titanium powder (decomposed by titanium hydride or reduced by sodium, less than a 325 mesh) was mixed with carbon black. It was then molded and heated up to 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:
Hydrocarbons such as benzene and methane are mixed into the steam from titanium tetrachloride. 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 form of titanium carbide differs depending on the reaction conditions.
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