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应用等离于渗氮法，在镍铬铁718合会上形成约7nm深度的氮化铬硬化层。在空气及干燥氮气下，运用一封闭的销—园柱体单向共形接触磨损试验机，考察了等离子渗氮镍铬铁718试样的磨擦学性能。在长时间的滑动接触后，可观察到有层片状的磨屑形成。这种磨屑包含有渗氮层的碎片。引起渗氮膜大效的主要机理是：从对磨面转移来的材料和销试样间产生的高的局部接触应力所致，由氮气代替上气时，会加剧磨屑转移膜的形成。
Plasma nitriding was applied to form a hardened layer of chromium nitride about 7 nm deep on the Ni-Fe-Fe-718 composite. Under air and dry nitrogen, a closed pin-cylinder one-way conformal contact wear tester was used to study the tribological properties of plasma nitrided Ni-Fe-718 specimens. After a long period of sliding contact, lamellar debris formation was observed. This wear debris contains nitrided fragments. The main mechanism of the nitriding effect is that the high local contact stress between the material and the pin specimen which is transferred to the grinding surface results in the formation of wear debris transfer film when nitrogen is used instead of the gas.