摘要
利用等离子表面合金化技术,在304不锈钢表面制备渗Cu改性层。借助球-盘磨损试验机对改性层常规大气环境下与不同偶件(GCr15球,Al2O3球)对摩时的摩擦学性能进行了测试。结果表明:不锈钢表面渗Cu改性层均匀致密、与基体结合良好,厚度大约26μm,主要由纯Cu和膨胀的奥氏体等相组成。渗Cu改性层的摩擦学性能与摩擦偶件相关。渗Cu不锈钢与GCr15球对摩时Cu改性层阻止了不锈钢与配副直接接触,并在摩擦过程中起到固体润滑作用,明显改善了不锈钢的摩擦学性能;渗Cu不锈钢与Al2O3球对摩时,由于陶瓷球的稳定化学性能及Cu改性层相对较低的剪切强度,导致摩擦过程中磨粒磨损加剧。
A Cu modified layer on AISI304 stainless steel was obtained using plasma surface alloying technique.Microstructure and composition of the modified layer were investigated by SEM and XRD.Friction and wear behavior of the modified layer sliding against different counterparts was investigated using a ball-on-disc tester in ambient air.Results show that the surface modified layer with the thickness of about 26 μm is uniform and dense.The layer is mainly composed of pure Cu,expanded austenite phase and a few Fe3O4 phase.Wear test results indicate that the tribological behavior of the modified layer depends on the counterparts.The Cu modified layer significantly improves the tribological properties of stainless steel sliding against GCr15,while higher wear rate and friction coefficient are obtained for sliding friction of the modified layer against Al2O3.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2011年第9期136-140,共5页
Transactions of Materials and Heat Treatment
基金
国家自然科学基金项目(50771070)
山西省中青年拔尖创新人才项目
太原市大学生创新项目(100115101
08122068)
关键词
304奥氏体不锈钢
离子渗Cu
摩擦学行为
AISI304 stainless steel
permeating Cu by plasma alloying
tribological behavior
