MCrAlY高温第二类热盐腐蚀行为研究  

Study on the TypeⅡHot Salt Corrosion of MCrAlY

作　　者：赵宇 李奎 郑兆然 行峰涛 陈芝来 谢骐远 李建华 ZHAO Yu;LI Kui;ZHENG Zhaoran;XING Fengtao;CHEN Zhilai;XIE Qiyuan;LI Jianhua(AECC Hunan Aviation Powerplant Research Insttute,Zhuzhou 412002,Hunan,China;BGRIMM Technology Group,Beijing 100160,China)

机构地区：[1]中国航发湖南动力机械研究所,湖南株洲412002 [2]矿冶科技集团有限公司,北京100160

出　　处：《热喷涂技术》2024年第1期57-63,共7页Thermal Spray Technology

摘　　要：针对五种MCrAlY材料进行了700℃的热盐腐蚀试验,通过对材料表面、腐蚀产物、腐蚀截面、腐蚀失重等方面进行分析,研究Co、Cr、Al等MCrAlY的基本元素对700℃下含硫热腐蚀的影响。结果表明,700℃下,腐蚀产物以氧化铬、氧化铝为主,伴随少量尖晶石生成。腐蚀以网状氧化铝形貌向深处蔓延,网状氧化铝的附近往往伴随硫化铬的生成。Co、Cr为抗热盐腐蚀的有益元素,其中,Cr对抗700℃热盐腐蚀的提升作用优于Co元素。The hot salt corrosion test at 700℃on five MCrAlY materials was conducted.Through the analysis of the material surface,corrosion products,corrosion cross-section,corrosion weight loss and other properties,the effects of basic elements of MCrAlY such as Co,Cr,and Al on hot salt corrosion of sulfur-containing materials at 700℃were studied.The results show that at 700℃,the corrosion products are mainly chromium oxide and aluminum oxide,accompanied by a small amount of spinel.Corrosion spreads to depth in the form of a reticular aluminum oxide,and the vicinity of the reticular aluminum oxide is often accompanied by the formation of chromium sulfide.Co and Cr are beneficial elements for resisting hot corrosion.Among them,Cr has higher hot corrosion resistance at 700℃than that of Co.

关 键 词：MCRALY 热盐腐蚀 抗氧化 

分 类 号：TG174.4[金属学及工艺—金属表面处理]