摘要
采用高速电弧喷涂工艺在20钢基体上制备铁基FeCrNiNbBSiMo涂层,采用光学显微镜、扫描电镜、能谱分析仪和X射线衍射仪对涂层的显微组织和抗高温氧化性能进行了研究,并与FeCrNiBSiMo涂层和锅炉管常用材料20钢的相关性能进行了比较。结果表明:FeCrNiNbBSiMo涂层的抗高温氧化性能明显优于FeCrNiBSiMo涂层和20钢,其氧化增重分别为FeCrNiBSiMo涂层和20钢的79%和1/30。Nb的加入使涂层更为致密,表现出优秀的抗高温氧化性能。
FeCrNiNbBSiMo coating was fabricated on cylindrical AISI 20 steel substrate by high velocity arc spraying process. The elevated temperature oxidation resistance and microstructure of the coatings were studied by means of optical microscopy （ OM）, scanning electron microscopy （SEM）, energy-dispersive X-ray spectroscopy （EDS） and X-ray diffraction （XRD）, and compared with FeCrNiBSiMo coating and AISI 20 steel. The results indicate that the elevated temperature oxidation resistance of FeCrNiNbBSiMo coating is much better than that of the FeCrNiBSiMo coating and AISI 20 steel. The mass gain of FeCrNiNbBSiMo coating is 79% of FeCrNiBSiMo coating and 1/30 of AISI 20 steel, respectively. It is shown that the addition of Nb can make the coating more compact and improve the high temperature oxidation resistance.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2014年第1期157-162,共6页
Transactions of Materials and Heat Treatment
基金
国家自然科学基金(51105129)
高校研究生科研创新计划项目(CXZZ12_0237)
关键词
高速电弧喷涂
铁基涂层
抗高温氧化性能
high velocity arc spraying
iron-based alloy coating
elevated temperature oxidation resistance.
