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    • Carbonitriding
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Thermal Modification Technologies
  • Home
  • About TMT
    • Who We Are
    • How We Heat Treat
  • HT Processes
    • Age Hardening
    • Annealing
    • Auxiliary Processes
    • Carbonitriding
    • Carburizing
    • Induction
    • Large Capacity
    • Normalizing
    • Plasma Nitriding
    • Post Weld Heat Treat
    • Solution Annealing
    • Stress Relieving
    • Through Hardening
    • Need Guidance?
  • Quality
  • Contact Us

Plasma Nitriding

Plasma Nitriding is the process in which a plasma field is generated in a partial pressure atmosphere to diffuse nitrogen into the surface of a part to increase its surface hardness.
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Industries
  • Automotive
  • Tooling
  • Chemical
  • Construction
Related Processes
Carbonitriding
Induction
Carburizing
Common Alloys
  • Alloy Steels e.g. 4140, 4340, 8620
  • Nitriding Steels e.g. N-135
  • Tool Steels e.g. A-2, H-13
  • Cast Iron
Equipment/Variations
The gas mixture of Hydrogen and Nitrogen can be controlled to produce a white layer or minimal amount.  The white layer is a very hard, but brittle surface layer.  Methane can be added as a third process gas to perform Ferritic Nitrocarburizing. Typical case depths are in the .001"-.020" range.
Applications
  • ​Plasma nitriding is used in applications when high surface hardness is required.  In general, case depths are lower than carbonitriding and carburizing due to the lower processing temperature.
  • Plasma nitriding takes place at sub-critical temperatures, meaning there is no phase transformation during the process.  This results in extremely low distortion compared to processes such as carburizing, carbonitriding, and through hardening.
  • Plasma nitriding can improve the corrosion resistance of a part.
What To Consider When Specifying
  • Material
  • Hardness
  • Case Depth
  • White Layer Composition (if required)
  • Spec (if required)

Have more technical questions?  Contact a TMT engineer here.
Thermal Modification Technologies | 19830 SW Teton Ave., Tualatin, OR 97062 | Phone: 503.654.6511 | Fax 503.653.1217
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  • Home
  • About TMT
    • Who We Are
    • How We Heat Treat
  • HT Processes
    • Age Hardening
    • Annealing
    • Auxiliary Processes
    • Carbonitriding
    • Carburizing
    • Induction
    • Large Capacity
    • Normalizing
    • Plasma Nitriding
    • Post Weld Heat Treat
    • Solution Annealing
    • Stress Relieving
    • Through Hardening
    • Need Guidance?
  • Quality
  • Contact Us