摘要
研究了Ce元素对铬-镍耐热钢在1000℃下氧化行为的影响,并利用扫描电镜和X射线检测仪对耐热钢氧化物进行表征。结果表明,在氧化初期耐热钢单位面积增重较快,氧化反应持续一段时间后,增重逐渐平稳,增重-时间变化曲线呈抛物线规律,但含Ce耐热钢的抗高温氧化性能始终优于未添加Ce的。铬-镍耐热钢在氧化过程中的最大氧化速率高达0.54 g/(m^(2)·h),而含Ce耐热钢的最大氧化速率仅为0.32 g/(m^(2)·h),氧化速率下降了40%左右。此外,Ce的存在可以促进耐热钢致密氧化膜的形成,并有效抑制氧化物的脱落,进而提高材料的抗高温氧化能力。
The effects of Ce elements on the oxidation behaviour of Cr-Ni heat-resistant steel at 1000℃were investi⁃gated,and the oxides were characterized by scanning electron microscopy and X-rays.The results indicate that the weight gain per unit area of heat-resistant steel is faster in the early stage of oxidation,and the weight gain is gradually stable after a certain time of oxidation with an overall parabolic law,however the resistant high-temperature oxidation of Ce-containing heat-resistant steel is always better than that of Cr-Ni heat-resistant steel without Ce.The maximum oxidation rate of Cr-Ni heat-resistant steel during oxidation is as high as 0.54 g/(m^(2)·h),while the maximum oxidation rate of Ce-containing heat-resistant steel is only 0.32 g/(m^(2)·h),which is decreased by 40%.In addition,the presence of Ce element can promote the formation of dense oxide film of heat-resistant steel and effectively inhibit the shedding of oxides,thus improving the resistance to high-temperature oxidation.
作者
龙骏
王帅
郑志斌
王娟
郑开宏
李盛锋
秦显柱
LONG Jun;WANG Shuai;ZHENG Zhibin;WANG Juan;ZHENG Kaihong;LI Shengfeng;QIN Xianzhu(Institute of New Materials,National Engineering Research Center of Powder Metallurgy of Titanium&Rare Metals,Guangdong Provincial Key Laboratory of Metal Toughening Technology and Application,Guangdong Academy of Sciences,Guangzhou 510650;Guangdong Provincial Iron Matrix Composite Engineering Research Center,Guangzhou 510650;Guilin Hongcheng Mining Equipment Manufacture Co.,Ltd.,Guilin 541000)
出处
《特种铸造及有色合金》
北大核心
2025年第1期65-70,共6页
Special Casting & Nonferrous Alloys
基金
国家重点研发计划资助项目(2021YFB3701205)
广西科技重大专项资助项目(桂科AA23023017)
广东省学科类重点实验室评估专项资助项目(2023B1212060043)
广东省科学院新材料研究所专项资金资助项目(2023GINMZX-202301020102)。
关键词
耐热钢
高温氧化
氧化动力学
氧化形貌
Cr_(2)O_(3)
Heat-resistant Steel
High Temperature Oxidation
Oxidation Kinetics
Oxidation Morphology
Cr_(2)O_(3)
