首页 | 本学科首页   官方微博 | 高级检索  
     检索      

TZM合金电化学腐蚀行为研究
引用本文:胡平,宋瑞,王快社,杨帆,胡卜亮,陈震宇,李秦伟,曹维成,刘东新,郭磊,安耿,喻海良.TZM合金电化学腐蚀行为研究[J].稀有金属材料与工程,2017,46(5):1225-1230.
作者姓名:胡平  宋瑞  王快社  杨帆  胡卜亮  陈震宇  李秦伟  曹维成  刘东新  郭磊  安耿  喻海良
作者单位:西安建筑科技大学冶金工程学院,西安建筑科技大学冶金工程学院,西安建筑科技大学冶金工程学院,西安建筑科技大学冶金工程学院,西安建筑科技大学冶金工程学院,西安建筑科技大学冶金工程学院,西安建筑科技大学冶金工程学院,金堆城钼业股份有限公司,金堆城钼业股份有限公司,西安瑞福莱钨钼有限公司,金堆城钼业股份有限公司,澳大利亚卧龙岗大学
基金项目:陕西省科技统筹创新工程计划(2015KTZDGY09-04);西部材料创新基金三期(XBCL-3-21);西安市科技计划-高校院所技术转移推进项目(CXY1521(3));陕西省高校科协青年人才托举计划项目(20150201);陕西省教育厅服务地方专项计划项目(16JF016)。
摘    要:采用粉末冶金和轧制工艺制备出TZM合金和稀土镧掺杂的La-TZM合金,通过动电位极化研究合金电化学腐蚀行为,扫描电子显微镜(SEM)观察、能谱定量(EDS)分析表征腐蚀产物显微结构特征。保持Cl-浓度不变分别探讨合金在中性、酸性、碱性介质中耐侵蚀能力。结果表明,TZM合金在中性和碱性介质中抗腐蚀性能优于La-TZM合金,而在酸性介质中La-TZM合金抗腐蚀性能优于TZM合金,两类合金抗腐蚀性均表现为酸性介质强于中性介质,碱性介质最弱。Cl-有效破坏腐蚀表面形成的钝化膜,OH-和Cl-双重侵蚀促使两类合金晶间腐蚀加剧、粉末冶金制备的TZM合金及La-TZM合金对酸性介质具有良好的耐蚀性。

关 键 词:TZM合金  腐蚀  极化曲线  电化学特性
收稿时间:2016/6/2 0:00:00
修稿时间:2016/7/18 0:00:00

Electrochemical Corrosion Behavior of Titanium-Zirconium-Molybdenum Alloy
Hu Ping,Song Rui,Wang Kuaishe,Yang Fan,Hu Boliang,Chen Zhenyu,Li Qinwei,Cao Weicheng,Liu Dongxin,Guo Lei,An Geng and Yu Hailiang.Electrochemical Corrosion Behavior of Titanium-Zirconium-Molybdenum Alloy[J].Rare Metal Materials and Engineering,2017,46(5):1225-1230.
Authors:Hu Ping  Song Rui  Wang Kuaishe  Yang Fan  Hu Boliang  Chen Zhenyu  Li Qinwei  Cao Weicheng  Liu Dongxin  Guo Lei  An Geng and Yu Hailiang
Abstract:Titanium-zirconium-molybdenum (TZM) alloy and rare earth lanthanum doped La-TZM alloy were fabricated using powder metallurgy and rolling technique. Their electrochemical corrosion behavior was studied quantitatively using potentiodynamic polarization, scanning electron microscope and energy spectrum techniques. The corrosion behavior of the TZM alloy and doped La-TZM alloy was investigated in neutral, acidic and alkaline medium, while keeping the Cl- concentrations invariant. The results show that the corrosion resistance of the tested TZM alloy is better than that of the La-TZM alloy in neutral and alkaline media, while in an acidic medium, the La-TZM alloy is better. It was also found that the alloys are more corrosion-resistant in an acidic medium than in a neutral medium, and are the least corrosion-resistant in an alkaline medium. Finally, we found that Cl- effectively destroys the corrosion formed on the surface passivation film, OH- and Cl- double erosion promoted these two types of alloy intergranular corrosion increased.
Keywords:Titanium-zirconium-molybdenum alloy  corrosion  polarization curves  electrochemical properties
点击此处可从《稀有金属材料与工程》浏览原始摘要信息
点击此处可从《稀有金属材料与工程》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号