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Titanium Nitride Powder, TiN 

Release time :2015/11/17
Titanium Nitride Powder, TiN








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Properties of titanium nitride
Titanium nitide (TiN) has a typical NaCl structure, belonging to a face-centered cubic 

lattice, with the lattice constant A =0.4241nm. Titanium atoms are located at the angular 

tip of face-centered cubic lattice. TiN is a non-stoichiometric compound, and its stable 

composition range is TIN0.37-TIN1.16. Nitrogen content can change within a certain 

range without causing changes in TiN structure. TiN powders are generally yellowish-brown, 

ultrafine TiN powders are black, and TiN crystals are golden yellow. TiN melting point 

is 2950℃, density is 5.43-5.44g/cm3, Mohs hardness is 8-9, good thermal impact 

resistance. The physical and chemical properties of titanium nitride are determined 

by the content of nitrogen. When the content of nitrogen decreases, the lattice parameters 

of titanium nitride instead increase, and the hardness also increases microscopically, 

but the seismic resistance of titanium nitride decreases accordingly. TiN has a higher 

melting point and a lower density than most transition metal nitrides.

2. Application of titanium nitride
Titanium nitride has good physical and chemical properties, such as high melting point, 

good chemical stability, high hardness, good conductivity, heat conduction and light 

performance, etc., which makes it very important in various fields, especially in the 

field of new cermet and gold decoration. The industry demands more and more titanium 

nitride powder. As a coating, titanium nitride has low price, abrasion resistance and 

corrosion resistance, and its many properties are better than vacuum coating. The 

application prospect of titanium nitride is very broad.
It is mainly applied in the following aspects:
(1) Tin is highly biocompatible and can be used in clinical medicine and stomatology.
(2) Titanium nitride has a low friction coefficient and can be used as a high-temperature 

lubricant.
(3) Titanium nitride, with metallic luster, can be used as a simulated gold decoration 

material, and has a good application prospect in the surrogate gold decoration industry; 

Titanium nitride can also be used as gold coating in jewelry industry. It can be used 

as a potential material to replace WC, so that the application cost of the material 

can be greatly reduced.

(4) Super hardness and wear resistance, can be used for the development of new 

tools, this new type of tools than ordinary cemented carbide tool durability and 

service life are significantly improved.
(5) Titanium nitride is a new multi-functional ceramic material. The addition of a 

certain amount of titanium nitrite to TiC-Mo-Ni series cermet can significantly 

refine the hard phase grains, so that the physical properties of cermet have been 

greatly improved at room temperature and high temperature, and the high temperature 

corrosion resistance and oxidation resistance of cermet have been greatly improved. 

The strength, toughness and hardness of ceramics can be enhanced by adding 

TiN powder to ceramics in a certain proportion. Titanium nitride nanometer is added 

to TiN/Al2O3 multiphase nanometer ceramics, which is evenly mixed by various 

methods (such as mechanical mixing method), and the obtained ceramic materials 

containing titanium nitride nanoparticles form a conductive network inside. This 

material can be used as an electronic component in the semiconductor industry.
(6) Adding a certain amount of TiN to magnesium-carbon bricks can greatly improve 

the slag erosion resistance of magnesium-carbon bricks.
(7) Titanium nitride is an excellent structural material, which can be used for steam 

injection thrusters and rockets. Titanium nitride is also widely used in bearings and 

sealing rings, which highlights the excellent application effect of titanium nitride.

(8) Based on the excellent electrical conductivity of titanium nitride, it can be made 

into a variety of electrodes and contact first-class materials.
(9) Titanium nitride has a high critical superconducting temperature and can be 

used as an excellent superconducting material.
Titanium nitride has a melting point higher than most transition metal nitrides and 

a density lower than most metal nitrides, making it a unique refractory.
(11) Titanium nitride can be coated on glass as a film. In the case of infrared 

reflectance greater than 75%, when the thickness of titanium nitride film is greater 

than 90nm, it can effectively improve the insulation performance of glass. In addition, 

by adjusting the percentage of nitrogen elements in ti nitride, the color of ti nitride 

film can be changed to achieve the ideal aesthetic effect.
Titanium nitride (TiN) is a fairly stable compound, which does not react with metals 

such as iron, chromium, calcium and magnesium at high temperature, and TiN 

crucible does not act with acidic slag and basic slag in the atmosphere of CO and 

N2. Therefore, TiN crucible is an excellent container for studying the interaction 

between liquid steel and some elements. TiN is heated to lose nitrogen in a vacuum 

to produce titanium nitride with low nitrogen content.
TiN has attractive gold color, high melting point, high hardness, good chemical 

stability, low wetting with metal structural materials, and high conductivity and 

superconductivity, which can be used in high temperature structural materials 

and superconducting materials.
Titanium nitride is a new kind of multifunctional cermet material with high melting 

point, high hardness and low friction coefficient, which is a good conductor of heat 

and electricity. Firstly, titanium nitride is an excellent structural material for high 

strength ceram tools, steam jet propulsion, and rockets. In addition, titanium nitride 

has a low friction coefficient and can be used as a high temperature lubricant. 

Titanium nitride for bearings and sealing rings shows excellent results. Titanium 

nitride has a high conductivity can be used as the electrode of molten salt electrolysis, 

as well as the point contact, film resistance and other materials. Titanium nitride is 

an excellent superconducting material with high critical superconducting temperature.









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