高温耐磨蚀涂层防护技术在热电偶保护套管上的应用  

The Application of High Temperature Wear and Corrosion Protection Coating Technology in Thermocouple Cannula

作　　者：李伟 王灿明[2] 渠智彦[2] 毕继鑫[2] 

机构地区：[1]兖矿科奥铝业有限公司济三电厂,山东济宁272000 [2]山东科技大学材料学院,山东青岛266510

出　　处：《中国仪器仪表》2009年第5期85-88,共4页China Instrumentation

摘　　要：针对热电偶保护套管在使用过程中存在的高温腐蚀与磨损现象,介绍了两种新的表面防护涂层。采用电弧喷涂技术制备出Cr3C2/B-Fe金属/陶瓷涂层,采用热喷涂+高温冶金反应法制备出Fe(Ni)-Al系金属间化合物涂层。采用上述涂层保护的热电偶保护套管,在循环流化床锅炉中应用,使用寿命长达9～12个月,取得了较好的效果。In this article, new surface coating protection processes was introduced according to the wear and corrosion mechanism of thermocouple cannula at high temperature. Cr3C2/B-Fe metal/ceramic coating was prepared by arc spraying technology and Fe（Ni）-A1 series intermetallic compound coating were prepared by thermal spray ＋ heat metallurgical reaction method. The service life of thermocouple cannula protected by such coatings is up to 9 to 12 months.

关 键 词：热电偶保护套管 金属间化合物 涂层 耐磨 耐蚀 

分 类 号：TG174.4[金属学及工艺—金属表面处理]