摘要
以Na3AlF6+NaF+Al混合熔体做渗铝剂,NaCl+KCl+NaF碱金属卤化物混熔体作助熔剂,在900℃下采用非电解熔融盐法在AISI 1020钢表层形成一层Fe(Al)固溶体渗层.采用X射线衍射仪(XRD)分析了渗铝层的物相组成,用附带能量色散谱仪(EDS)附件的扫描电子显微镜(SEM)研究渗层截面的形貌和成分,通过理论分析与实验结合确定最佳的渗铝工艺,分析非电解熔盐法制备渗铝层的形成机理和渗层结构.
Fe（Al） solid solution coating on AISI 1020 steel was formed in non-electrolyzed molten salts at 900 ℃ by using molten mixture of Na3AlF6＋NaF＋Al as aluminizing agent and molten halogenide of alkali metals of NaCl＋KCl＋NaF as cosolvent.The phase composition of the aluminized layer was analyzed with X-ray diffraction.The micrographs and the composition of the cross-section of the aluminized layer were studied with scanning electron microscope attached with a piece of energy dispersive X-ray spectrometer（EDS）.The optimal aluminizing process was determined through combining the theory and experiments.The aluminizing mechanism of the coating in non-electrolyzed molten salts and its structure were analyzed as well.
出处
《兰州理工大学学报》
CAS
北大核心
2010年第3期10-12,共3页
Journal of Lanzhou University of Technology
关键词
渗铝
非电解熔盐法
渗铝机理
aluminizing
non-electrolyzed molten salts method
aluminizing mechanism
