Sunday, 25 October 2015

What is TiN (titanium nitride coating)?

TiN-coated drill bit


Titanium nitride (TiN) (sometimes known as “Tinite” or “TiNite” or “TiN”) is an extremely hard ceramic material, often used as a coating on titanium alloys, steel, carbide, and aluminium components to improve the substrate's surface properties.

Applied as a thin coating, TiN is used to harden and protect cutting and sliding surfaces, for decorative purposes (due to its gold appearance), and as a non-toxic exterior for medical implants. In most applications a coating of less than 5 micrometres (0.00020 in) is applied.

The titanium nitride coating TiN was introduced by India Carbide and it remains a proven and versatile standard coating. It provides effective protection against abrasive and adhesive wear. It is often applied for its decorative effect or as a wear indicator.

Coating Properties:

        1. Coating Material                           :  TiN
        2. Hardness (HV 0.05)                      :  2,400
        3. Coating Temperature (°F)             :  930
        4. Friction Coefficient on Steel (dry)   :  0.5
        5. Thickness (µm)                            :  1.5 - 3
        6. Oxidation Resistance (°F)             :   1,100
        7. Color                                           :  Gold
        8. Foodstuff-neutral                         :   Yes


Recommended applications of TiN Coating:

  1. steel cutting
  2. punching and forming (when working low-hardness materials)
  3. molds for the injection molding of plastics
  4. plungers of diesel injection pumps
  5. medical instruments

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