MoS2-Ti/Cu-Ni-In多层膜的制备及其高温抗微动磨损性能

Preparation and fretting wear resistance of MoS_2-Ti/Cu-Ni-In multilayered films at elevated temperature

为了改善钛合金表面的高温抗微动磨损性能,采用非平衡磁控溅射技术在TC4钛合金表面沉积了总厚度约为6μm的Mo S_2–Ti/Cu–Ni–In多层固体润滑膜,并与单层MoS_2–Ti与Cu–Ni–In膜进行对比。利用扫描电镜、压痕仪、X射线衍射仪、维氏显微硬度计、微动摩擦磨损试验机和三维表面轮廓仪对固体润滑薄膜的形貌、结合强度、物相、显微硬度、350°C下的微动磨损行为和磨痕形貌进行分析。结果表明,所制备的Mo S_2–Ti/Cu–Ni–In多层膜交替结构清晰,致密,在12 000个微动循环周期后的摩擦因数稳定在0.266左右,最终磨损总量为0.357 mm^3,都比2种单层膜小,具有良好的高温抗微动磨损性能。

In order to improve the fretting wear resistance of titanium alloy surface at elevated temperature,a multilayered MoS2–Ti/Cu–Ni–In solid lubrication film with a total thickness of 6μm was deposited on TC4 titanium alloy by non-balanced magnetron sputtering,and compared with the single-layered MoS2–Ti and Cu–Ni–In films.The morphology,binding strength,phase structure,microhardness,fretting wear behavior at 350°C,and wear scar of the solid lubrication films were analyzed using scanning electron microscopy,indenter,X-ray diffractometer,Vickers microhardness tester,fretting wear testing machine,and three-dimensional surface profilometer.The results showed that the multilayered MoS2–Ti/Cu–Ni–In film had a compact and clear alternating structure,and good fretting wear resistance as evidenced by the final friction coefficient of ca.0.266 and total volume loss of 0.357 mm3 after fretting test for 12 000 cycles,which were lower than that of the single-layered films.