水蒸气对GH3600合金高温氧化行为的影响  

Effects of Water Vapor on High Temperature Oxidation Behavior of GH3600 Alloy

作　　者：李宁 马赛[1] 秦春 李涌泉 LI Ning;MA Sai;QIN Chun;LI Yongquan(School of Materials Science and Engineering,North Minzu University,Yinchuan 750021,China;School of Mechanical and Electrical Engineering,North Minzu University,Yinchuan 750021,China;Key Lab of Powder Material&Advanced Ceramics Sponsored by Province and Ministry,Yinchuan 750021,China)

机构地区：[1]北方民族大学材料科学与工程学院,宁夏银川750021 [2]北方民族大学机电工程学院,宁夏银川750021 [3]省部共建粉体材料与特种陶瓷重点实验室,宁夏银川750021

出　　处：《热加工工艺》2023年第8期113-116,共4页Hot Working Technology

基　　金：国家自然科学基金项目(51804011);宁夏高等学校科学研究项目(NGY2018-147);宁夏自然科学基金项目(2019AAC03104);粉体材料与特种陶瓷重点实验室开放基金项目(2102)。

摘　　要：研究水蒸气对GH3600合金高温氧化行为的影响。采用热重分析仪完成合金在900℃不同水蒸气含量空气中24 h的高温氧化试验。对氧化试样的氧化膜表面形貌、横截面微观结构及元素分布进行了分析。结果表明:在所有试验条件下形成的氧化膜均由外层的NiO和内层的Cr2O3组成。在氧化环境中加入水蒸气可明显改变氧化过程的动力学和氧化层结构。The influence of water vapor on the oxidation behavior of GH3600 alloy was studied.The oxidation of the alloy was conducted at 900℃in air with different humidity for 24 h by thermal gravimetric analysis system.The oxide surface morphology,cross-section microstructure and chemical composition of the oxide scale were studied after oxidation.The results show that the oxide scales forming under all test conditions are composed of an outer NiO layer and an inner Cr2O3 layer.With the introduction of water vapor,the oxidation kinetics and oxide layer structural change significantly.

关 键 词：NI-CR合金 GH3600 水蒸气 高温氧化 

分 类 号：TG144[一般工业技术—材料科学与工程]