多元高铝青铜优化Ni60合金涂层减摩性能的研究  

Research of anti-friction performance of Ni60 alloy coating optimized by multiple high aluminum bronze

作　　者：路阳[1] 杨晓伟[1] 杨效田[1] 肖荣振[1] 王鹏春 

机构地区：[1]兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室,兰州730050

出　　处：《功能材料》2016年第1期1097-1101,共5页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(51365024;51361020;51165021);甘肃省有色金属新材料省部共建国家重点实验室开放基金资助项目(SKL1301)

摘　　要：采用超音速等离子喷涂技术在45#钢基体上制备高铝青铜含量分别为0、5%、10%的镍基合金/高铝青铜复合涂层。采用XRD对3组涂层的相结构进行分析,测定基体-涂层的显微硬度,并研究涂层与对磨件304不锈钢的干摩擦行为,探讨高铝青铜的加入对镍基合金涂层力学性能及摩擦学性能的影响。结果表明,随着高铝青铜的加入,涂层的显微硬度和摩擦系数明显降低。其中含10%高铝青铜的复合涂层硬度波动性趋于稳定;而高铝青铜含量为5%时,在低载荷下涂层的摩擦系数较未加高铝青铜低,随着载荷增加,摩擦系数缓慢增加,到200N高载荷时,3种涂层的摩擦系数基本相同(约0.25),其减摩作用不再明显。较低载荷下含高铝青铜的涂层具有较低的摩损量,而高载荷下,含5%高铝青铜的涂层较其它两组涂层具有更低的磨损量,总体摩擦磨损性能优良。The composite coatings of nickel-based alloy/high aluminum bronze were prepared with different mass fraction(0%,5%,10%)of high aluminum bronze by supersonic plasma spraying technology on 45#steel substrate.The phase structures of the coatings were analyzed by XRD,and the microhardness of the coatings was measured.The dry friction behavior between the coatings and 304 stainless steel was researched,and the effect of the addition of high aluminum bronze on the mechanical properties and tribological properties of the composite coatings was investigated.The results showed that the microhardness and the friction coefficient of the coatings descended with the addition of high aluminum bronze.When the mass fraction of the high aluminum bronze reached 10%,the fluctuation of the microhardness tended to stable;Then the friction coefficient of the coatings with 5% high aluminum bronze performed a lower value than 0% high aluminum bronze under low load.With increment of the load,the friction coefficient increased slowly;when the load increased to 200 N,the friction coefficients of the three kinds of coatings were approximately same,and remained about 0.25,and the anti-friction of the high aluminum bronze was no longer apparent.The wear loss of the coatings under low load confirmed that the coating with high aluminum bronze had lower wear loss under low load.But when the load increased to 200 N,the wear loss of the coatings with 5% high aluminum bronze had lower than the other two coatings,and the overall friction and wear performance of the coating was perfect.

关 键 词：超音速等离子喷涂 NI60 高铝青铜 力学性能 摩擦学性能 

分 类 号：TG146[一般工业技术—材料科学与工程]