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在无铅锡青铜CuSn10和石墨的混合粉中加入硝酸镍和聚乙烯醇(PVA)的水溶液,经过还原气氛下的一次烧结,然后镍颗粒被粘附到CuSn10粉和石墨粉表面,经过冷轧和二次烧结得到石墨-CuSn10复合涂层。结果表明:镍的添加能改善石墨与CuSn10基体之间的界面结合,显著提高复合涂层的硬度和耐磨减摩性。添加镍的石墨-CuSn10复合涂层的耐磨减摩性能优于CuSn10Pb10涂层,是一种理想的无铅铜基滑动轴承材料。
In the lead-free tin bronze CuSn10 and graphite mixed powder by adding nickel nitrate and polyvinyl alcohol (PVA) aqueous solution, after a reduction atmosphere sintering, and then nickel particles are adhered to the CuSn10 powder and graphite powder surface, after cold rolling And secondary sintering graphite-CuSn10 composite coating. The results show that the addition of nickel can improve the interfacial bonding between graphite and CuSn10 matrix and significantly improve the hardness and wear resistance and friction reduction of the composite coating. The addition of nickel graphite-CuSn10 composite coating wear-resistant antifriction performance better than CuSn10Pb10 coating, is an ideal lead-free copper-based sliding bearing materials.