摘要
用电化学极化方法研究了Ｔｉ５０Ｎｉ５０、Ｔｉ５０Ｎｉ４２Ｃｕ８及３１７Ｌ合金在不同ｐＨ值的１％ＮａＣｌ水溶液中的耐蚀性。恒电位阳极极化曲线表明：Ｃｕ的加人明显提高了ＴｉＮｉ合金的再钝化电位；但对点蚀电位的影响较复杂，在ｐＨ１—５时ＴｉＮｉＣｕ高于ＴｉＮｉ合金，在ｐＨ＝６—１０时ＴｉＮｉＣｕ则低于ＴｉＮｉ合金，ｐＨ值增大至１１～１３时，两者又趋于接近。实验中还发现，与３１７Ｌ相比，ＴｉＮｉ合金的点蚀电位测量数值分散性较大，Ｃｕ的加入对这种分散性无明显影响。
Pitting corrosion behaviours of Ti50Ni50,Ti50Ni42Cu8 and 317L alloys have been studied in 1% NaCl saline solution with varied pH value. Anodic polarization curves obtained by potentinstatic tests point out that the repassivation potential of TiNt alloy is substantially raised by the addition of Cu. The pitting potential Eb of TiNiCu is more noble than that of TiNt in lower PH value(pH≤5),but is lower than that of TiNt in the PH 6-10.The Eb tends to be the same in the PH 11￣13.It is also observed in the experimentalsthat, compared to 317L alloy,TiNt has a rather scattered pitting potential values which is notaffected by the addition of Cu.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
1995年第5期54-57,共4页
Rare Metal Materials and Engineering
基金
浙江省自然科学基金
