镍基高温合金渗Al-Si涂层抗高温氧化性能研究  

Study on High Temperature Oxidation Properties of Al-Si Coatings on Superalloy

作　　者：杨世伟[1] 张志明[2] 潘健全[2] 范俊杰 

机构地区：[1]哈尔滨工程大学材料科学与化学工程学院,黑龙江哈尔滨150001 [2]华北石油管理局,河北沧州062560 [3]国营汉光机械厂,河北邯郸056028

出　　处：《热加工工艺》2007年第20期59-61,共3页Hot Working Technology

摘　　要：用料浆法在DZ4镍基高温合金表面"二次"制备Al-Si涂层,依据GB/T13303-91对DZ4合金料浆渗铝硅试样进行1 100℃×300 h抗高温氧化实验。为便于比较,DZ4裸合金也进行了同炉氧化实验。用SEM、XRD对氧化后的表面及截面形貌、相组成进行了分析。结果表明,DZ4合金渗Al-Si涂层的氧化动力学曲线基本遵循抛物线规律,其抗氧化性能优于DZ4裸合金。The Al-Si coatings on the surface of DZA superalloy were re-prepared by using slurry process. According to GB/T13303-91, high temperature oxidation experiments of Al-Si coating on DZA superalloy were carried out at 1100℃ in air for 300 h. The morphologies and phase structure of the surface and section after oxidation were analyzed by SEM,XRD.The results show that the oxidation kinetics of Al-Si coatings on DZA superalloy obeys parabolic rule and has superior oxidation resistance compared with parent superalloy.

关 键 词：DZ4合金 料浆法 AL-SI涂层 氧化动力学 

分 类 号：TG174.3[金属学及工艺—金属表面处理]