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TC6合金柱塞表面改性对耐磨性能的影响 被引量:5

Effect of surface modification on wear resistance of TC6 titanium alloy for pump plunger
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摘要 采用离子渗氮、双层辉光离子渗Mo、阴极弧离子镀TiN技术在TC6钛合金基体表面制备了强化层。对比研究了TC6合金基体、各强化改性层、Cr12MoV工具钢在航空煤油中分别与GCr15钢及铜合金(ZCuSb3Ni3Zn3Pb20P)配副对磨时的摩擦学性能,探讨了TC6合金渗氮后抛磨处理对摩擦副磨损行为的影响。结果表明,在航空煤油环境中,以GCr15钢为配副时,TC6合金的表面耐磨性能明显不及Cr12MoV钢;对TC6合金进行表面强化改性处理,离子渗Mo、离子渗氮、离子镀TiN可提高TC6合金表面硬度,显著提高表面耐磨性,但仍不及Cr12MoV钢;TC6合金离子渗氮再经抛磨后处理可减小表面粗糙度,具有较低的摩擦因数,能有效地改善摩擦体系的耐磨性能,获得优于Cr12MoV钢的耐磨性能。 Modification layers for improving wear resistance of TC6 alloy were prepared using a plasma nitriding, a double-glow plasma Mo surface alloying and a cathode arc ion plating TiN. The tribological properties of TC6 substrate, Crl2MoV steel and those modified layers on the TC6 alloy surface, sliding with GCrl5 steel or copper alloy (ZCuSb3Ni3Zn3Pb2OP) in aviation kerosene, were comparatively researched. Besides, the effect of roughness on abrasion behavior of friction pairs by post-polishing treatment was discussed. The results indicate that sliding in aviation kerosene, the wear resistance of TC6 alloy is obviously worse than that of Crl2MoV steel with GCrl5 steel ball counterpart. The surface modification of TC6 alloy, such as plasma alloying Mo, plasma nitriding, ion plating TiN, is markedly enhanced the surface hardness and wear resistance, however wear resistance of the modified TC6 alloy is inferior to that of Crl2MoV steel. Plasma nitrided and subsequently properly polished TC6 alloy is not only obtained lower surface roughness and lower friction coefficient, but good wear resistance, and has preferable tribological properties than Crl2MoV steel.
出处 《金属热处理》 CAS CSCD 北大核心 2012年第7期37-41,共5页 Heat Treatment of Metals
关键词 耐磨性 TC6合金 航空煤油 离子渗氮 表面粗糙度 wear resistance TC6 alloy aviation kerosene plasma nitriding surface roughness
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