摘要
利用CHI660B型电化学工作站研究了4种不同成分（Zr55Al10Ni5Cu30，Zr60Al15Ni25，Zr65Al10Ni10Cu15，Xr52．5Al0Ni10Cu15Be12．5）的锆基非晶态合金以及其中两种成分（Zr65Al10Ni10Cu15，Zr52．5Al10Ni10Cu15Be12．5）的晶态合金在2．5mol／L的HCl溶液中的腐蚀行为。通过Tafel曲线的测试结果表明，非晶合金的耐腐蚀性能与其成分有很大的关系，这4种非晶合金试样的耐腐蚀性由强到弱的顺序依次为Zr60Al15Ni25〉Zr65Al10Ni10CU15〉Zr52．5Al10Ni10Cu15Be12．5〉Zr55Al10Ni5Cu30。两种成分的非晶态合金与其对应成分的晶态试样相比，非晶态合金具有较低的腐蚀电流，显示出较好的耐腐蚀性。最后，根据电化学腐蚀原理，从合金的微观结构、化学成分以及腐蚀介质的性质3个方面探讨了影响合金耐腐蚀性的因素。
The corrosion behavior of Zr-based bulk amorphous alloys Zr55Al10Ni5Cu30,Zr60Al15Ni25,Zr65Al10Ni10Cu15,Xr52.5Al0Ni10Cu15Be12.5） and two kinds of counterparts＇ samples Zr65Al10Ni10Cu15 and Zr52.5Al10Ni10Cu15Be12.5 were studied by CHI660B electrochemical workstation in 2.Smol/L HCl solution. The results show that the corrosion resistance of amorphous alloys was related to their chemical components. The corrosion resistances of the four kinds of amorphous alloys were Zr60Al15Ni25〉Zr65Al10Ni10CU15〉Zr52.5Al10Ni10Cu15Be12.5〉Zr55Al10Ni5Cu30. The corrosion current values of bulk amorphous alloys are smaller than that of their corresponding crystal alloys. In other words, the corrosion resistance of amorphous alloys is better than that of the corresponding crystal alloys. According to electrochemistry corrosion principle, the effect of microstructure, chemical components of alloys and solution properties on corrosion resistance in HCl solution were discussed.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2007年第A07期2622-2625,共4页
Journal of Functional Materials
关键词
锆基
大块非晶合金
耐腐蚀性
Zr-based
bulk amorphous alloys
corrosion resistance
