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Titanium carbide Overview
The chemical formula for titanium carbide (TiC) is TiC. Its molecular weight, 59.89, is the same. Gray metallic lattice solid with a face-centered cubic structure. Melting point: 3140+-90, boiling point: 4820, relative densities 4.93. Hardness is greater that 9. Water insoluble, but soluble with nitric and aqua regia. It is stable with air below 800 and eroded in air above 2000. It reacts at 1150C with pure oxygen.
Titanium carbide ceramics is a typical transition metal carbide. TiC’s unique properties are due to its mixture of covalent, ionic, and metallic bonds in a single crystal structure. TiC has many unique properties due to its crystal structure. These include high hardness, high melt point, wear resistance, and electrical conductivity.
Preparation of Titanium Carbide
Method: the mixtures of titanium and carbon are obtained by hydrogen-reduction TiO2 in high temperature or by mixing the TiO2 with the carbon powder in blocks and pressing them into the electric oven, which is then heated up to 2300-2700 and carbonized under H2 atmosphere or CO. The hard, crystalline powder of TiC is produced by the reaction of carbon black and titanium dioxide at temperatures higher than 1800degC. Cobalt and nickel are used to compact it for heat-resistant parts and cutting tools. Cutting tools are more brittle, and it’s lighter. Sintered carbide is less likely to produce grooves when combined with the tungsten carbide in tool materials.
Property of titanium carbide
Theoretically TiC contains 20.05 percent carbon. It is a metallic light gray. It is chemically resistant and inert towards hydrochloric, sulfuric and nitric acids. TiC dissolves readily in oxidizing chemical solutions, like aqua regia, nitric and hydrofluoric acids, or nitric oxide. TiC dissolves also in an alkaline oxidation melt. Nitrogen is formed above -1500degC in a nitrogenous air. TiC can be attacked by chlorine and will oxidize at high temperatures.
The elastic modulus for TiC is 309 706 MPa. The material sintered from 2600 to 3000 has a fracture modulus between 499.8 and 843.2MPa at room temperatures. Thermal modulus is 54.4-63.92mpa for 2200 and 107.78-116.96mpa for 982. The melting point of TiC is 3160 degrees C. At room temperature, the resistivity is 180 to 250 It is a good conductor for high temperatures. The thermal coefficient of expansion between 593degC and room temperature is 4.12×10-6/degF. Thermal conductivity is 0.04 CAL/cm S/degC.
Titan carbide ceramics
1. Multiphase materials : titanium carbide is a super hard material. It can be produced with TiN and Al2O3 as well as other raw materials to produce various multiphase ceramics. They have excellent chemical stability. This makes them the best choice for cutting tool, wear resistant parts. Titanium carbide ceramics can be used for cutting high-speed wheels of wire regulation and carbon due to their excellent oxidation resistance. They also do not cause crescent wear when cut with steel. The use of multiphase ceramics containing titanium carbide has been widespread.
2. Titan carbide, as a surface coat, is extremely wear resistant. By a physical or chemical process, diamond surfaces are coated with carbides that can form metals and alloys. At high temperatures, these metals and alloys react with diamond surface carbon to produce stable metal carbides. These carbides are not only able to bond with diamonds, but they can also infiltrate matrix metals, enhancing the adhesion between matrix metal and diamond. Tool life can increase by up to three times with titanium carbide film.
3. The research on nuclear fusion reactors has shown that titanium carbide and composite (TiN+TiC) coating materials, after chemical heat treatments, create a tritium-resistant layer of permeability on the surface titanium carbide. This layer can resist hydrogen-ion irradiation, and withstand a high temperature gradient.
4. The ceramics made of titanium carbide are good for optical purposes.
Titanium carbide Supplier
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