Overview of titanium carbide
Titanium carbide, chemical formula TiC, molecular weight 59.89. Gray metal face-centered cubic lattice solids. Melting point 3140±90℃, boiling point 4820℃, relative density 4.93. Hardness is greater than 9. Insoluble in water, soluble in nitric acid and aqua regia. It is stable in the air below 800℃ and erodes in the air above 2000℃. It can react with pure O2 at 1150C.
Titanium carbide is a metal luster of its own existence of iron-gray crystal, with a number of similar metal characteristics: such as high melting point, boiling point and hardness, and hardness only second to diamond, thermal conductivity and electrical conductivity is also very good, at very low temperatures will also show superconductivity. Therefore, this substance is often used to manufacture cermet, hard alloy, heat-resistant alloy, anti-wear material, high-temperature radiation material and other high-temperature vacuum devices.
Titanium carbide base ceramic metal material
Titanium carbide ceramics as a typical transition metal carbide, itself brittle, cannot be directly used as engineering components, so composite materials are usually used as a reinforcement phase, more is used as a coating in the field of materials that have been applied and paid attention to, such as the emergence of titanium carbide ceramics.
Titanium carbide fund belongs to the ceramic is a kind of metal or alloy TiC ceramic phase heterogeneous composite material, both ceramics high strength, high hardness, wear resistance, high-temperature resistance, oxidation resistance and chemical stability characteristics, as well as mental toughness, can be used to manufacture used in reducing and inert atmosphere of high-temperature thermocouple protective sleeve and smelting metal crucible and so on.
Titanium carbide ceramics are typical transition metal carbides. Its bonding is a mixture of ionic, covalent and metallic bonds in the same crystal structure, so TiC has many unique properties. The crystal structure determines the basic properties of TiC such as high hardness, high melting point, wear resistance and electrical conductivity.
Properties of titanium carbide
In theory, TiC contains 20.05% carbon and is light metallic gray. It is chemically stable and almost inert to hydrochloric and sulfuric acids. In oxidizing chemicals, such as aqua regia and nitric or hydrofluoric acid, TiC is readily soluble. It is also soluble in alkaline oxide melts. When heated in a nitrogenous atmosphere, nitrogen forms above -1500°C. TiC is corroded by chlorine gas at high temperatures and oxidizes easily in air.
The density of TiC is 4.94 g/cm3, the Mohs hardness is 9+, the microhardness is 3200kg /mm2, and the elastic modulus is 309,706 MPa. The fracture modulus of the material sintered at 2600 ~ 3000℃ is 499.8 ~ 843.2 MPa at room temperature. The thermal modulus at fracture ranges from 107.78 mph to 116.96mpa at 982℃, and from 54.4 mpa to 63.92mpa at 2200℃. TiC melting point is 3160 ° C, resistivity at room temperature is 180 ~ 250 | jQ - cm. It can be used as a conductor at high temperatures. The thermal expansion coefficient between room temperature and 593°C is 4.12 × 10-6/°F. Thermal conductivity is 0.041 CAL /cm S /°C.
Application of titanium carbide ceramics
1. Multiphase materials: titanium carbide ceramics belong to super hard tool materials, TiC can be made of TiN, WC, Al2O3 and other raw materials into a variety of multiphase ceramic materials, these materials have a high melting point, high hardness, excellent chemical stability, is the preferred material for cutting tools, wear-resistant parts. Titanium carbide ceramic is used for cutting high-speed wire conducting wheel and carbon steel because of its good oxidation resistance and no crescent wear with steel. Multiphase ceramic cutting tools containing titanium carbide have been widely used.
2. Coating material: as a surface coating, titanium carbide is a very wear-resistant material. Some strong carbides are coated on the surface of a diamond by physical or chemical methods to form metals or alloys. These metals or alloys react with carbon atoms on the surface of diamonds at high temperatures to form stable metal carbides. These carbides can not only bond well with diamond, but also be permeated by matrix metal, thus enhancing the adhesion between diamond and matrix metal. By depositing titanium carbide films on the tool, tool life can be increased several times.
3. In the research of nuclear fusion reactor, titanium carbide coating material and (TiN+ TiC) composite coating material, after chemical heat treatment, produce tritium-resistant permeability layer on the surface of titanium carbide, can resist hydrogen ion irradiation, resist large temperature gradient and thermal cycle.
4. In addition, titanium carbide can also be made into smelting tin, lead, cadmium, zinc and another metal crucible; Transparent titanium carbide ceramics are also good optical materials.
High-quality Titanium carbide Supplier
TRUNNANO (aka. Luoyang Tongrun Nano Technology Co. Ltd.) is a trusted global chemical material supplier & manufacturer with over 12 years' experience in providing super high-quality chemicals and Nanomaterials. Currently, our company has successfully developed a series of materials. The
Titanium carbide powder produced by our company has high purity, fine particle size and impurity content. For the latest
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