Plasma nitriding surface treatment method for gray cast iron part

摘要

Disclosed is a plasma nitriding surface treatment method for a gray cast iron part. In the plasma nitriding surface treatment method, a nitride layer is formed on a surface of the gray cast iron part by a selective ion nitriding treatment. The plasma nitriding surface treatment method is carried out such that the surface of the gray cast iron part is prevented from being deformed, and a reduction of the frictional coefficient of the part is prevented.

主权项

1. A plasma nitriding surface treatment method for a gray cast iron part, comprising:
forming a nitride layer on a surface of the gray cast iron part by a selective ion nitriding treatment, and forming an oxide layer on the surface of the gray cast iron part after forming the nitride layer, wherein the oxide layer is formed using a salt bath oxidation process or vapor to inhibit formation of a porous layer and facilitate infiltration of nitrogen atoms, wherein the surface of the gray cast iron part is prevented from being deformed, and a frictional coefficient of the gray cast iron part is maintained.