摘要
采用热喷熔方法在45钢表面制备了NiCrBSiWCe合金粉末喷熔层,在SRV磨损试验机上进行小振幅滑动磨损试验研究。结果表明,NiCrBSiWCe合金喷熔层的摩擦磨损性能明显高于SAE52100钢。在较低载荷和滑动速度较低下,小振幅滑动磨损机理为磨损表面的划痕、裂纹和疲劳脱层。而在较高滑动速度下,小振幅滑动磨损机理为磨损表面的氧化磨屑层的形成,含稀土的磨屑层阻碍了喷熔层小振幅滑动磨损。
The alloy powders of NiCrBSiWCe were flame sprayed on a 45 carbon steel substrate. Tribologyical and wear properties of the coating were investigated by sliding tests. The results show that the NiCrBSiWCe alloy coating exhibits better wear resistance than that of the SAE52100 steel. Wear mechanism of the coating is grooves, microcracking and spallation at lower load and sliding speed, An adhered oxide debris layer is formed on the worn surface in friction at higher load and sliding speed. The oxide layer with rare earth elements contribute to decreased wear and improved wear resistance.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2007年第6期114-117,共4页
Transactions of Materials and Heat Treatment
基金
甘肃省自然基金暨中青年科技基金资助项目(ZS031-A25-018G)
