16Mn钢离子渗氮和离子 S-C-N共渗表面摩擦学性能

16Mn钢在离子渗氮基础上采用S-C-N的离子共渗技术制备出一层硫化物层，在半润滑条件下，以LY12铝合金圆环为对摩下试样，分别与16Mn钢表面渗碳和渗硫试样进行对摩试验；采用了GCr15钢为对摩下试样来测定16Mn钢表面渗碳和渗硫试样的磨损规律：用扫描电子显微镜，EDAX和XRD对磨损试样的磨痕形貌及成分做了分析。结果表明：与渗硫试样对摩的LY12铝合金圆环的表面粗糙度、磨损率、平均摩擦系数以及摩擦系数波动的幅度都比与渗碳试样对摩的要低；与LY12铝合金对摩过程中，渗硫层能够有效地避免粘着磨损，并且GCr15钢对摩过程中，渗硫层能够有效地降低16Mn钢的磨损程度。

Tribological Properties of 16Mn Steel Treated by Plasma Nitriding and S-C-N Mulficomponent Thermochemical Treatment

Sulfide layer was obtained on the nitrided surface of 16Mn steel by means of plasma S-C-N multicomponent thermochemical treatment. Under half lubrication condition, wear test of the LY12 aluminum alloy sliding against samples of 16Mn treated by cubrizing and sulphiding was conducted respectively. GCr15 steel was adopted as counterpart to measure the wear loss of carburized samples and sulphided samples. SEM, EDAX and XRD were used for the morphological and chemical characterization of the wear tack of the samples. Results show that the surface roughness,wear rate, average friction coefficient and its fluctuation of LY12 aluminum alloy cirque sliding against sulphided sample were lower than that of the cirgue sliding against carburized sample. Compared with carburized layer, sulfide layer of 16Mn steel can not only efficiently prevent the occurrence of adhesion when sliding against LY12 aluminum alloy, but also greatly lower the wear loss of 16Mn steel when sliding against GCr15 steel.