新型含Ce耐热钢高温氧化行为的研究  

High Temperature Oxidation Behaviour of New Ce-containing Heat-resistant Steel

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)

机构地区：[1]广东省科学院新材料研究所,国家钛及稀有金属粉末冶金工程技术研究中心,广东省金属强韧化技术与应用重点实验室,广州510650 [2]广东省钢铁基复合材料工程研究中心,广州510650 [3]桂林鸿程矿山设备制造有限责任公司,桂林541000

出　　处：《特种铸造及有色合金》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)。

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.

关 键 词：耐热钢 高温氧化 氧化动力学 氧化形貌 Cr_(2)O_(3) 

分 类 号：TG142.73[一般工业技术—材料科学与工程] TG174.4[金属学及工艺—金属材料]