Titanium Nitride Powder, TiN
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
(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.