Tribology behavior of double-glow discharge Mo layers on titanium alloy in aviation kerosene environment  

钛合金表面辉光离子渗Mo合金化层在航空煤油环境中的摩擦学行为(英文)

作　　者：汤金钢[1] 刘道新[1] 唐长斌[1] 张晓化[1] 熊华 唐宾[3] 

机构地区：[1]西北工业大学腐蚀与防护研究所,西安710072 [2]西安航空动力控制科技有限公司,西安710072 [3]太原理工大学表面工程研究所,太原030024

出　　处：《Transactions of Nonferrous Metals Society of China》2012年第8期1967-1974,共8页中国有色金属学报（英文版）

基　　金：Projects (50671085, 51171154) supported by the National Natural Science Foundation of China;Project (2007AA03Z521) supported by the High-tech Research and Development Program of China

摘　　要：In order to improve the tribology behavior in aviation kerosene, molybdenum （Mo） modified layers were fabricated on Ti6Al4V base alloy using a double-glow plasma surface alloying technique. The morphology, microstructure, microhardness and element depth distribution of the Mo modified layers were studied. The tribology properties of Ti6Al4V base alloy, Mo modified layers and 5CrMnMo tool steel sliding with GCr15 steel or QSn4-3 copper alloy counterparts in aviation kerosene were comparatively researched. The effect of roughness on the sliding wear behavior was discussed. The results indicate that the Mo modified layers with polishing treatments not only reduce the friction coefficient of Ti6Al4V base, but also enhance the wear resistance of the counterparts. The Mo modified layers have better tribology behavior than 5CrMnMo steel. It is also found that the wear volume loss of the counterparts is proportional to the value of roughness of Mo modified layers, which is related directly to the ploughing wear between micro convex bodies of the layers and counterparts.为改善钛合金在航空煤油中的摩擦学性能,采用辉光离子渗技术在Ti6Al4V合金表面制备Mo合金化层。分析合金化层的表面形貌和微观结构,测试合金化层的显微硬度和元素沿层深的分布,对比研究钛合金基体、渗Mo合金化层和5CrMnMo工具钢在航空煤油中分别与GCr15钢及QSn4-3铜合金配副对磨时的耐磨性能,并探讨渗Mo合金化层的表面粗糙度对摩擦磨损行为的影响。结果表明:经表面抛光处理后,钛合金表面辉光离子渗Mo合金化层不仅显著降低了钛合金的摩擦因数,而且有效增强了摩擦配副的耐磨性。渗Mo合金化层的摩擦性能优于5CrMnMo工具钢。实验还发现铜合金配副的磨损体积损失与Mo合金化层的表面粗糙度成正比,这主要是由合金化层与配副表面之间微凸体的磨粒磨损作用决定的。

关 键 词：WEAR friction coefficient TI6AL4V aviation kerosene MO 

分 类 号：TG115.58[金属学及工艺—物理冶金]