摘要
根据抽油泵柱塞对耐磨耐蚀及自润滑性能的迫切需求，采用激光熔覆-离子渗硫复合工艺对45钢表面进行强化，得到了复合固体润滑渗硫层。利用扫描电镜（SEM）、原子力显微镜（AFM）、电子探针显微分析（EPMA）、俄歇电子能谱（AES）和X射线衍射（XRD）等方法表征渗硫层表面的组织结构、形貌成分及物相组成，用摩擦磨损试验机研究渗硫层的减摩耐磨性能。结果表明：激光熔覆-离子渗硫工艺得到的复合层为硫化物层，厚度约为3～5μm，质软且疏松多孔，主要成分为FeS，而且与基底之间没有明显的过渡层，界线明显，结合紧密。该渗硫层是一种理想的摩擦表面，具有优异的减摩耐磨性能，离子渗硫技术为原位合成固体润滑剂FeS提供了一种新方法。
According to the urgent need of wear, corrosion and self-lubricating properties of the pump plunger, solid lubrication film to strengthen the surface of 45 steel was prepared by laser cladding-ion sulfurizing. Surface structure, morphology and phase composition of the film were characterized using scanning electron microscope （SEM）, atomic force microscope （AFM）, electron probe microanalysis （EPMA）, auger electron spectroscope （AES）, and X-ray diffraction （XRD）. Friction-reduction and wear-resistance of the sulfide layer were investigated by the friction and wear tester. The results show that the sulfide layer with the thickness of about 3- 5 μm on the surface is obtained using the laser cladding-ion sulfurizing process. The layer is soft and loose, mainly containing FeS. There is no obvious transition between the sulfide layer and the substrate, and the boundaries combine tightly. The sulfide layer is an ideal friction surface, possessing excellent properties of friction-reduction, wear-resistance. Laser cladding-ion sulfurizing process provides a new method for situ synthesis of solid lubricant FeS.
出处
《中国表面工程》
EI
CAS
CSCD
北大核心
2014年第4期70-75,共6页
China Surface Engineering
基金
清华大学摩擦学国家重点实验室开放基金(SKLTKF13B04)
国家自然科学基金(51179202)
关键词
激光熔覆
离子渗硫
渗硫层
摩擦
磨损
laser cladding
ion sulphurizing
sulfide layers
friction
wear
