CAJ | 학술논문

考察了等离子喷涂Cr3C2-NiCr涂层及其表面化学镀Ni镀层通过不同配副组成摩擦副的摩擦学特性，并应用SEM、XRD和XPS对磨痕进行了分析. 结果发现：等离子喷涂Cr3C2-NiCr涂层及其表面化学镀Ni镀层自配副组成摩擦副，均表现出较大的摩擦系数和磨损系数；但是，Cr3C2-NiCr涂层表面化学镀Ni镀层与Cr3C2-NiCr涂层配副组成摩擦副，在干摩擦条件下，能达到0.12的摩擦系数和接近10-6mm3(Nm)-1的磨损系数. 上述结果是由于Cr3C2-NiCr涂层的磨损机理从强烈的层状颗粒剥落转变为沿气孔和微裂纹等处的颗粒断裂.
고찰료등리자분도Cr3C2-NiCr도층급기표면화학도Ni도층통과불동배부조성마찰부적마찰학특성，병응용SEM、XRD화XPS대마흔진행료분석. 결과발현：등리자분도Cr3C2-NiCr도층급기표면화학도Ni도층자배부조성마찰부，균표현출교대적마찰계수화마손계수；단시，Cr3C2-NiCr도층표면화학도Ni도층여Cr3C2-NiCr도층배부조성마찰부，재간마찰조건하，능체도0.12적마찰계수화접근10-6mm3(Nm)-1적마손계수. 상술결과시유우Cr3C2-NiCr도층적마손궤리종강렬적층상과립박락전변위연기공화미렬문등처적과립단렬.
Tribological properties of plasma-sprayed Cr3C2-NiCr coatings without or with electroless plated Ni were investigated, and the worn surfaces were analyzed by employing SEM, XRD and XPS. It was found that both the self-mated rubbing pairs consisting of the Cr3C2-NiCr coating and the Cr3C2-NiCr coating electroless plated with Ni displayed higher friction coefficient and wear coefficient. However, The rubbing pair of the Cr3C2-NiCr coating electroless plated with Ni against the Cr3C2-NiCr coating had a friction coefficient of 0.12 and a wear coefficient close to 10-6mm3(Nm)-1 even if under dry sliding. The improvement in tribological properties could be attributed to that the wear mechanism of Cr3C2-NiCr coating transformed to particle fracturing along pores and microcracks from the intensive spalling along splat interfaces.