DZ4合金渗Al-Si涂层抗高温氧化机理研究  

High temperature oxidation properties of Al-Si coatings on a DZ4 supperalloy

作　　者：杨世伟[1] 王俊一 

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

出　　处：《哈尔滨工程大学学报》2008年第9期997-1000,共4页Journal of Harbin Engineering University

摘　　要：为进一步研究航空发动机叶片耐高温腐蚀性能,采用料浆法在DZ4合金表面制备了Al-Si涂层.依据GB/T13303-91《钢的抗氧化性能测定方法》标准,对制备了Al-Si涂层和未制备Al-Si涂层的DZ4合金进行了1100℃+300h高温氧化性能试验,用SEM、XRD对氧化后的渗层表面形貌、相组成及结构进行了分析研究.试验结果表明,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,其抗氧化性能属于完全抗氧化级.In order to further study the high temperature corrosion performance of aero-engine blades, Al-Si coatings on the surface of a DZ4 superalloy were prepared using a slurry process. Following GB/T13303 -91 standard of Steels Determination Method of Oxidation Resistance, high temperature oxidation experiments were made for a DZ4 superalloy coated with Al-Si and a DZ4 superalloy without coating exposed to 1100 ℃ in air for 300h. The results showed that the oxidation dynamic curve of Al-Si coatings on a DZA superalloy obeys the parabolic law and the oxidation resistance of the superalloy is grade 1.

关 键 词：DZ4合金 渗Al-Si涂层 高温氧化机理 料浆法 

分 类 号：TG174.3[金属学及工艺—金属表面处理]