某燃气轮机燃烧室合金高温蒸汽氧化行为研究  

Oxidation Behavior in Air-steam Mixed Atmosphere at 1000oC of Four Typical High-temperature Alloys for Gas Turbine

作　　者：梁志远[1] 张超 曲劲宇 何建元 郭亭山 徐一鸣 LIANG Zhiyuan;ZHANG Chao;QU Jinyu;HE Jianyuan;GUO Tingshan;XU Yiming(School of Energy and Power Engineering,Xi'an Jiaotong University,Xi’an 710049,China;National Engineering Research Center for Ship and Marine Special Equipment and Power Systems,No.703 Research Institute of CSSC,Harbin 150078,China)

机构地区：[1]西安交通大学能源与动力工程学院,西安710049 [2]中国船舶集团有限公司第七〇三研究所、船舶与海洋特种装备和动力系统国家工程研究中心,哈尔滨150078

出　　处：《中国腐蚀与防护学报》2024年第2期355-364,共10页Journal of Chinese Society For Corrosion and Protection

基　　金：创新工程(211-XXXX-N106-01-04);自立科技研发专项项目(202206Z);国家科技重大专项(J2019-III-0012-0055)。

摘　　要：采用蒸汽氧化实验与热力学理论计算研究了DD5,K447A,GH3230以及GH3536共计4种燃气轮机用典型高温合金在高温蒸汽中的氧化行为。在1000℃下含10%H_(2)O的空气中,合金GH3230和K447A氧化增重遵循抛物线氧化规律,合金DD5和GH3536出现失重情况。合金K447A与GH3230表面形成了Cr_(2)O_(3)和Al_(2)O_(3)为主的氧化产物,其中合金GH3230因Al含量较低而发生内氧化现象。DD5表面发生Al_(2)O_(3)氧化膜剥落,而GH3536出现氧化物挥发。结果表明,4种合金的抗蒸汽氧化性能排序为K447>GH3230>DD5>GH3536。The use of doped hydrogen or pure hydrogen as fuel poses a severe test to the key structural components of gas turbines,especially the resistance of materials to steam oxidation.The high-temperature steam oxidation behavior of 4 typical high temperature alloys,namely DD5,K447A,GH3230 and GH3536 for gas turbine in a mixed flow of air with 10%steam at 1000oC was studied by means of mass change measurement and thermodynamic theoretical calculation.It follows that the GH3230 and K447A alloys showed an oxidation mass gain and followed a parabolic law,while the alloys DD5 and GH3536 showed oxidation mass loss on the contrary.The oxidation products formed on K447A and GH3230 alloy were mainly layered Cr_(2)O_(3) and Al_(2)O_(3)scales.The spallation of Al_(2)O_(3)oxide scales occurred on the surface of DD5 alloy,while oxide volatilization was found on GH3536 alloy.In sum,the steam oxidation resistance of the four alloys may be ranked as following:K447>GH3230>DD5>GH3536.

关 键 词：高温合金 蒸汽氧化 燃烧工况 燃气轮机 

分 类 号：TG174[金属学及工艺—金属表面处理]