Ti6Al4V合金渗镀Mo-N表面改性层在不同腐蚀环境下的抗磨损行为研究  

Corrosion-Wear Behavior of Molybdenum Nitride Layer on Ti6Al4V Alloy

作　　者：秦林[1] 詹科[1] 范爱兰[1] 唐宾[1] 

机构地区：[1]太原理工大学,山西太原030024

出　　处：《稀有金属材料与工程》2008年第4期725-728,共4页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(50501016);山西省自然科学基金(2006021023)

摘　　要：采用等离子渗镀技术在钛合金(Ti6Al4V)表面形成均匀致密的钼氮合金渗镀层。在3.5%NaCl溶液、0.5mol/L的H2SO4溶液、0.02mol/L的Na3PO4溶液和亨氏溶液中,对比研究了Ti6Al4V合金及其钼氮改性层的抗腐蚀磨损性能。20000周次腐蚀环境下的微动磨损试验结果表明,渗镀的Mo-N改性层显著提高了Ti6Al4V合金的抗腐蚀磨损能力。电化学噪音测量结果证明,Mo-N改性层削弱了Ti6Al4V合金腐蚀和磨损相互耦合增幅的作用。A molybdenum nitride layer on the surface of Ti-6A1-4V alloy was fabricated by a plasma planting process. The corrosion-wear behaviors and mechanisms for Ti-6A1-4V alloy with and without nitride layer were comparatively investigated in 3.5 wt.% NaC1, 0.5 mol/L H2SO4, 0.02 mol/L Na3PO4 and Hanks＇ solutions. Mo-N modification layer shows smaller friction coefficients and higher wear resistance than that of Ti6A14V substrate. The excellent corrosion-wear performances of Mo-N modification layer come from their strong corrosion resistance and wear resistance. Electrochemistry tests show that the current noise levels for the Mo-N modified titanium alloy are much smaller than that measured on untreated titanium alloy in the same solution.

关 键 词：钛合金 钼氮改性层 腐蚀磨损 

分 类 号：TG174.4[金属学及工艺—金属表面处理]