抄録
This study investigated effect of plasma-nitriding as pre-treatment and DLC/CrN multi-layer coating on friction and fatigue properties of stainless steel SUS316. The multi-layer coating was conducted using the unbalanced magnetron sputtering (UBMS) method. The result showed that the friction coefficient of the DLC/CrN-coated material in dry condition was higher than that of DLC-coated material. However, the wear resistance of the DLC/CrN-coated material under the condition lubricated by motor oil was improved more than that of the DLC-coated material. The fatigue strength was improved by plasma-nitiridng by 45 % and it was further improved by DLC or DLC/CrN-coating. This result showed that the combination of plasma-nitiriding and the DLC or DLC/CrN coating was effective to improve the fatigue strength.
