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干膜润滑剂主要是润滑涂层而不是防护涂层。不少使用单位要求它兼有防护性,这是一项既苛刻又合理的要求。作者对二硫化钼、石墨、低分子量聚四氟乙烯、氟化石墨等七种固体润滑剂及润滑剂-树脂体系在潮湿状态下及盐雾环境中对30CrMnSiA钢的腐蚀性进行了研究;并观察了酸值、不同底材和表面处理对耐腐蚀性的影响,以及腐蚀抑止剂对改善二硫化钼腐蚀性的效果。作者认为对石墨的选用应是有条件的,在盐雾等腐蚀性环境中应排除它;氟化石墨则可作为选用的对象;对二硫化钼应通过精制及控制贮存条件来降低其腐蚀性。作者还认为,为了满足润滑与防护的双重要求,还应在产品设计上采取相应措施,例如选用耐蚀性高的金属作结构材料,规定合适的表面处理及其它防护措施等。
Dry film lubricants are primarily lubricated rather than protective coatings. Many users require it to be both protective, which is both a harsh and reasonable requirement. The authors studied the corrosion of 30CrMnSiA steels on seven solid lubricants, such as molybdenum disulfide, graphite, low molecular weight polytetrafluoroethylene and fluorinated graphite, and the lubricant-resin system under humid condition and salt spray environment. The effect of acid value, different substrates and surface treatments on corrosion resistance and the effect of corrosion inhibitors on improving the corrosion resistance of molybdenum disulfide were observed. The authors believe that the choice of graphite should be conditional, in the salt spray and other corrosive environments should be excluded; fluoride graphite can be used as the object of choice; molybdenum disulfide should be refined and controlled by the storage conditions to reduce its corrosive . The author also believes that in order to meet the dual requirements of lubrication and protection, product design should also take appropriate measures, such as the selection of corrosion-resistant metal as a structural material, providing the appropriate surface treatment and other protective measures.