摘要
研究了Ｎｉ，Ｎｉ－５Ｔｉ， Ｎｉ－１０Ｔｉ及 Ｎｉ－１５Ｔｉ（质量分数，％，下同）合金在 ６５０℃熔融（６２Ｌｉ－３８Ｋ）２ＣＯ３（摩尔分数，％）中，空气气氛下的腐蚀行为．Ｎｉ－５Ｔｉ合金的腐蚀速度小于纯镍，表面形成Ｎｉ和Ｔｉ的混合氧化膜，Ｎｉ－１０Ｔｉ和Ｎｉ－１５Ｔｉ合金的腐蚀速度却明显高于纯镍，表面也形成了 Ｎｉ和 Ｔｉ的混合氧化膜，但沿原始合金中的ＴｉＮｉ３相发生了严重的Ｔｉ的内氧化．和纯镍相比， Ｎｉ－Ｔｉ合金表面氧化膜的生长速度明显减慢，讨论了合金腐蚀机制。
The corrosion behaviors of Ni, Ni-5Ti, Ni-10Ti and Ni-15Ti (mass fraction, %) in molten (Li62-K38)2CO3 at 650℃ under air have been studied. The corrosion of Ni-5Ti is slighter than that of pure Ni, yielding a mixed scale of Ni and Ti oxides. The corrosion rates of Ni-10Ti and Ni-15Ti are significantly higher than that of pure Ni, with the formation of an external scale containing Ni and Ti oxides, and a wide internal oxidation zone of Ti along the intermetallic compound phase TiNi3 in the original alloys. Compared with pure Ni, the growth of the external scale developed on Ni-Ti alloys is obviously reduced. The corrosion mechanism of the alloys was also discussed.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
2000年第5期517-520,共4页
Acta Metallurgica Sinica
基金
国家自然科学基金!59971053
