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为了改善空间对接锁系在空间环境中的抗磨损和防冷焊性能,采用等离子体浸没离子注入与沉积技术在钛合金零部件表面制备类金刚石碳膜(DLC)。通过摩擦磨损试验、划痕试验、压痕试验来表征DLC膜的摩擦性能、膜-基结合力及显微硬度。结果表明,经复合强化制备的DLC膜摩擦系数低于0.15、磨损率为1.7×10-7mm3/N·m、膜-基结合力达256 mN、显微硬度为21 GPa,能够有效地提高航天用钛合金零件的使用性能。采用DLC膜和Braycote 601EF真空润滑脂的固体-油脂复合润滑方式来进一步改善DLC膜在空间应用性能,试验证实该项技术可满足空间对接锁系零部件的抗磨损、防冷焊需求。
In order to improve the anti-wear and anti-cold-welding performance of space-docking system in space environment, plasma-immersion ion implantation and deposition technique were used to prepare diamond-like carbon film (DLC) on the surface of titanium alloy parts. The tribological properties, film-substrate bond strength and microhardness of DLC films were characterized by friction and wear test, scratch test and indentation test. The results show that the friction coefficient of DLC film prepared by composite strengthening is less than 0.15, the wear rate is 1.7 × 10-7mm3 / N · m, the film-base bonding strength is 256 mN and the microhardness is 21 GPa, which can effectively improve the aerospace Use of titanium alloy parts performance. DLC film and Braycote 601EF vacuum grease solid-grease composite lubrication to further improve the DLC film in space applications, the test confirmed that the technology to meet the space butt lock system components wear resistance, anti-cold welding needs.