摘要
研究了５％Ａｌ、１０％Ａｌ对Ｆｅ－２５Ｃｒ合金在Ｈ２Ｓ－Ｈ２平衡混合气氛中７００～９００℃下高温硫化腐蚀行为。发现加Ａｌ能显著降低Ｆｅ－２５Ｃｒ合金的硫化速度并改变其硫化层的形貌、成分及结构。加Ａｌ合金的硫化动力学在孕育期后遵从抛物线规律。综合反应动力学、硫化层结构和成分分析。提出了Ｆｅ－Ｃｒ－Ａｌ合金的硫化机理。
The effects of 5% Al and 10% Al on the sulfidation behaviour of the Fe-25Cr alloy in H2S-H2 gas mixtures in the temperature range of 700～900℃ has been studied.The sulfidation resistance of Fe-25Cr was improved and sulfide scale morphologies,composition and structure of Fe-25Cr were changed remarkably.The sulfidation kinetics of the alloys with aluminium obeyed basically the parabolic law after an initial period of reaction time.The sulfidation mechanism of the Fe-Cr-Al alloy has been proposed.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
1994年第A01期1-6,21,共7页
Journal of University of Science and Technology Beijing
基金
国家自然科学基金
中科院腐蚀科学开放室资助
