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Overview of Titanium Carbide
Titanium carbide. Chemical formula TiC. Molecular weight: 59.89. Gray metal lattice solids with a face-centered cubic structure. Melting point 31140+90, boiling temperature 4820, relative densities 4.93. Hardness greater that 9. Water insoluble, but soluble with nitric and aqua regia. It is stable at 800 ppm and erodes at 2000 ppm. It reacts with pure O2 when heated to 1150C.
Titanium carbide, a metal-gray crystal with an iron-gray luster, has many similar metal characteristics, including a high melting point, high boiling point, hardness that is only second to diamond. The thermal conductivity and the electrical conductivity are also excellent, while superconductivity can be seen at very low temperatures. This substance can be used to make cermet, heat resistant alloy, anti wear material, high temperature radiation material, and other high temperature vacuum devices.
Ceramic material based on titanium carbide
The titanium carbide ceramics, as a typical transitional metal carbide and brittle in nature, can’t be used directly for engineering components. Composite materials are therefore used more as a layer on the materials that have already been used.
Titanium carbide is a ceramic that belongs to metal or alloy.
Ceramics made from titanium carbide are typical of transition metal carbides. TiC’s unique properties are due to its bonding, which is a combination of ionic covalent and metal bonds in a single crystal structure. TiC has many unique properties that are determined by its crystal structure, including high hardness, melting point, wear resistant and electrical conductivity.
Property of titanium carbide
In theory, TiC has a carbon content of 20.05% and is a metallic gray. It is a chemically stable material that is almost inert against hydrochloric, sulfuric and hydrochloric acids. TiC readily dissolves in oxidizing chemical solutions, like aqua regia, nitric and hydrofluoric acids, or nitrate. It is also readily soluble in melts of alkaline oxydes. In a nitrogenous environment, nitrogen is formed above -1500degC. TiC is easily oxidized in air, and it is corroded at high temperature by chlorine gas.
The elastic modulus for TiC is 309 706 MPa. The material sintered from 2600 to 3000 has a fracture modulus between 499.8 and 843.2 MPa. The thermal modulus of fracture is between 107.78mph to 116.96mpa when sintered at 982, or from 54.4mpa to 63.9mpa when sintered at 2200. 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/degC.
Titan carbide ceramics
1. Multiphase materials
Titanium carbide is a super-hard material. It can be produced from raw materials such as TiN and WC. Al2O3 or other materials to create a wide range of multiphase ceramics. The materials are known for their high melting point, hardness, chemical stability and durability. Due to its high oxidation resistant and lack of crescent wear, titanium carbide is commonly used to cut carbon steel and high-speed conductor wheel. The use of multiphase ceramic cutting tool containing titanium carbide is widespread.
2. Coating material
As a surface coat, titanium carbide has a high wear resistance. The surface of diamonds can be coated with some strong carbides by using chemical or physical methods. These metals and alloys react at high temperatures with carbon atoms present on the diamond surface to form stable metals carbides. These carbides are not only able to bond with diamond but can also permeate matrix metal. The tool’s life can be extended by up to three times with titanium carbide film.
3. Research on the nuclear fusion power reactor.
After chemical heat treatments, titanium carbide coating and (TiN+TiC), composite coating material produce tritium – resistant permeability layers on the surface.
4. In addition,
The ceramics made from titanium carbide are good for optical purposes.
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