MatWeb, The Online Materials Database

Titanium Nitride (TiN) Coating


Subcategory: Ceramic; Ceramic/Metallic Coating; Nitride

Key Words: Hard Ceramic Coatings; Brycoat; Mold Coating; Aerospace Coatings

Material Notes:
Thin film coating applied by environmentally safe, Physical Vapor Deposition (PVD) vacuum system. Can be applied to most metals to provide enhanced surface characteristics, and can also be applied to some ceramics and plastics. Has the appearance of gold, but is an ultra-hard material. Is harder than carbide and chrome, approximately 85 Rc. Is highly inert - Will not corrode and has excellent chemical resistance. Provides a non-stick surface. Prevents galling. Can withstand elevated temperatures. Is non-toxic - Used for surgical devices and food processing equipment. Is dense and non-porous. Is typically 3 micrometers or 0.0001" thick. Has a uniform thickness that follows the contour of the part's surface. Forms an outstanding bond to the base material that will not blister, flake or chip. Cutting tools typically last 3 to 10 times longer than uncoated tools.

Information provided by BryCoat Inc.

Titanium nitride and other advanced wear coatings are available from BryCoat, Phone (800) 989-8788 or (727) 490-1000; Fax (727) 490-0233; or www.brycoat.com.

Physical PropertiesOriginal ValueComments
Density5.22 g/cc 
Open Porosity0 % 

Mechanical Properties
Knoop Microhardness2000 kg/mm²
Hardness, Rockwell C85 Approximate
Vickers Microhardness2300 kg/mm²
Modulus of Elasticity600 GPa Young's Modulus
Poisson's Ratio0.25 
Coefficient of Friction0.65 between 100 Cr6 ball and coating

Electrical Properties
Electrical Resistivity2.5e-005 ohm-cm 
Band Gap3.35 - 3.45 eV 

Thermal Properties
CTE, linear 20°C9.4 µm/m-°C 
Thermal Conductivity19 W/m-K 
Melting Point2930 °C 
Maximum Service Temperature, Air600 °C Oxidation Begins
Heat of Formation337 kJ/mol 

Descriptive Properties
ColorGold 
Crystal StructureCubic Face-Centered Cubic

 


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