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陈飞,张玉林,刘伟光,冯文然,杨英歌.等离子体辉光放电制备W-Mo共渗层在还原性酸中耐蚀性研究[J].稀有金属材料与工程(英文),2018,47(3):723~728.[Fei Chen,Yulin Zhang,Weiguang Liu,Wenran Feng and Yingge Yang.Corrosion behavior of W-Mo co-penetrated layer produced by glow discharge plasma technique in reducing acid[J].Rare Metal Materials and Engineering,2018,47(3):723~728.]
Corrosion behavior of W-Mo co-penetrated layer produced by glow discharge plasma technique in reducing acid
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Received:February 27, 2016  Revised:August 09, 2016
Key words: Ti6Al4V  W-Mo co-penetrated layer  Glow discharge  Corrosion resistance
Foundation item:北京石油化工学院优秀学科带头人培育计划(BIPT-BPOAL-2013);北京石油化工学院优秀青年及骨干教师培育计划(BIPT-BPOYTMB-2015);北京市光机电设备技术重点实验室(KF2011-02);北京市光机电设备技术重点实验室(ZF2013-02).
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Fei Chen,Yulin Zhang,Weiguang Liu,Wenran Feng and Yingge Yang  
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      To improve the corrosion resistance of Ti6Al4V alloys in acid solution, a W-Mo co-penetrated top layer was prepared using hollow-cathode glow discharge plasma technique below the β phase transition point. The surface morphology, chemical composition and crystal structure of the coatings were determined by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS) and X-ray power diffraction (XRD), respectively. It indicated that a dense co-penetrated layer was produced with maximum thickness of approximately 23 μm. The layer was composed of AlMoTi2 and TixW1-x phases. The static corrosion test was conducted in acid (H2SO4 and HCl, respectively) at room temperature (RT) by using the electrochemical workstation. The results showed that the W-Mo co-penetrated layer could achieve relatively stable corrosion potential in reducing acid and the Icorr of co-penetrated layers occupy merely 1/10 and 1/6 that of Ti6Al4V substrates. In addition, there is barely any corroded product and crack on the corroded surface of co-penetrated layers, indicating no corroded shedding phenomenon occurred. So the corrosion resistance are obviously improved in the premise of keeping the basic properties of the substrate.