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采用基于原位全息显微技术和放射性核素技术的摩擦磨损试验装置,在润滑条件下对Cu Zn36/100Cr6配对摩擦体系中Cu Zn36的磨损行为进行了研究.利用装置中的全息显微镜对Cu Zn36磨痕表面微观形貌和粗糙度进行原位分析,利用放射性核素磨损量测量系统精确测量Cu Zn36的实时磨损量;利用扫描电镜对Cu Zn36及100Cr6钢球磨面进行观察和分析,利用X射线光电子能谱分析仪对Cu Zn36磨痕表层的元素化合态进行定量分析.结果表明:在试验法向载荷为1.9~3.0 MPa范围内时,Cu Zn36表现出良好耐磨性,原因是Cu Zn36在试验过程中形成了具有高硬度和自润滑性的Zn O强化层,主要磨损方式为疲劳磨损.在较差磨合试验过程中,磨痕表面耐磨层一直处于“形成-破坏-再形成-再破坏”的动态过程,主要磨损方式为磨粒磨损和黏着磨损.
The wear behavior of Cu Zn36 in Cu Zn36 / 100Cr6 alloy was studied under the condition of lubrication by using the friction and wear test device based on in-situ holographic microscopy and radionuclide technology.Using the holographic microscope in the device, the Cu Zn36 The surface morphology and roughness of the wear scar were analyzed in situ. The real-time wear amount of CuZn36 was measured by using the radionuclide wear measuring system. The wear surface of CuZn36 and 100Cr6 steel ball was observed and analyzed by scanning electron microscope. The results show that Cu Zn36 shows good wear resistance under the normal load of 1.9 ~ 3.0 MPa, because Cu Zn36 During the test, a layer of ZnO with high hardness and self-lubricity was formed and the main wear mode was fatigue wear. In the process of poor running-in test, the abrasion-resistant surface of wear scar was always in the “formation-destruct-reformation- Re-destroy ”dynamic process, the main way for wear abrasive wear and adhesion wear.