采用浸没法研究了Ti3Al金属间化合物在750℃熔融LiCl-3%Li2O中的热腐蚀行为.结果表明:Ti3Al的耐腐蚀性能优于SS310不锈钢.Ti3Al在腐蚀初期出现了较快的腐蚀,而后腐蚀速率减慢并趋于平缓.Ti3Al经腐蚀后,形成了双层结构的腐蚀膜,外层较厚,由铝的氧化物(LiAlO2,Al2O3)构成;内层较薄,由钛的氧化物(Li2TiO3,TiO2)构成.铝的选择氧化导致了Ti3Al腐蚀初期快速腐蚀,而腐蚀后期腐蚀速率较慢是由于钛的氧化物构成的内层具有较好的保护性.
参考文献
| [1] | J. E. Indacochea;J. L. Smith;K. R. Litko .Corrosion performance of ferrous and refractory metals In molten salts under reducing conditions[J].Journal of Materials Research,1999(5):1990-1995. |
| [2] | Iidacpchea J E;Smith J L;Kitko K R .High-temperature oxidation and corrosion of structural materials in molten chorlides[J].Oxidation of Metals,2001,55(1-2):1-16. |
| [3] | Cho S H;Zhang J S;Shins P K et al.A study on the corrosion behavior austenitic stainless steel in hot molten salt of LiCl and LiCl-Li2O[J].Korean Journal of Mater Research,1999,9(02):211-216. |
| [4] | Cho S H;Park S C;Zhang J S et al.Corrosion behavior and effect of alloying element of Fe-based and Ni-based superalloys in LiCl and LiCl-Li2O[J].Korean Journal of Mater Research,1999,9(09):985-991. |
| [5] | 谢锡善.我国高温材料的应用与发展[J].机械工程材料,2004(01):2-8,11. |
| [6] | Z.Tang;F.Wang .Hot-Corrosion Behavior of TiAl-Base Intermetallics in Molten Salts[J].Oxidation of Metals,1999(3/4):235-250. |
| [7] | 关春红,唐兆麟,王福全,吴维(山文).TiAl金属间化合物在熔融碳酸盐中的热腐蚀行为[J].腐蚀科学与防护技术,2000(03):134-137. |
| [8] | 李远士,牛焱,吴维(山文).金属材料的高温氯化腐蚀[J].腐蚀科学与防护技术,2000(01):41-44. |
| [9] | Zahs A;Spiegel M;Grabke H J .The influence of alloy elements on the chlorine-induced high temperature corrosion of Fe-Cr alloys in oxidizing atmospheres[J].Materials and Corrosion,1999,50:561-578. |
| [10] | Spiegel M;Biedenkopf P;Grabke .Corrosion of iron base alloys and high alloy steels in the Li2CO3-K2CO3 eutectic mixture[J].Corrosion Science,1997,39:1193-1210. |
| [11] | Chauvaut V;Cassir M;Denos Y .Behavior of titanium species in molten Li2CO3-Na2CO3 and Li2CO3-K2CO3 under anodic and catholic conditions.Ⅰ -thermodynamic predictions at 550 ～ 750 ℃[J].Electroimica Acta,2003,23(14-15):1991-2002. |
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