采用水冷铜模吸铸法制备出部分晶化的Ni55Nb30Sn5Ti5Zr5和Ni55Nb30Sn5Zr10块体非晶合金,并利用X射线衍射(XRD)分析和示差扫描量热仪分析(DSC)对合金的相组成及热物性参数进行了测量分析.采用极化曲线法研究合金在不同溶液中的腐蚀行为,并利用失重法测定合金在10% HCl溶液中的腐蚀速率,对腐蚀后的显微形貌及表面成分进行了扫描电镜(SEM)观察和能谱分析(EDS).结果表明,Ni55Nb30Sn5Ti5Zr5合金比Ni55Nb30Sn5Zr10合金具有更宽的过冷液相区和更好的抗腐蚀性能.随着合金晶化相的增多,合金抗腐蚀性能降低.Ti元素的加入可在合金表面形成氧化钛的保护膜,从而使合金的抗腐蚀性能提高.
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