AZ91D镁合金在四氟丙烯气氛中的成膜特征  

Oxide Film Characteristics of AZ91D Magnesium Alloy in Tetrafluoropropene Atmosphere

作　　者：曾杲 曾剑扬 毛献萍[1] 曾一文[1,3] Zeng Gao;Zeng Jianyang;Mao Xianping;Zeng Yiwen(College of Materials and Chemical Engineering,Hezhou University;School of Materials Science and Engineering,Guilin University of Electronic Technology;Guangxi Key Laboratory of Calcium Carbonate Resources Comprehensive Utilization)

机构地区：[1]贺州学院材料与化学工程学院 [2]桂林电子科技大学材料科学与工程学院 [3]广西碳酸钙资源综合利用重点实验室

出　　处：《特种铸造及有色合金》2023年第1期47-49,共3页Special Casting & Nonferrous Alloys

基　　金：广西联合资助培育项目(2019JJA160154)。

摘　　要：研究了AZ91D镁合金在四氟丙烯/CO_(2)保护气氛中熔炼形成的表面氧化膜特征。结果表明,氧化膜呈致密特征,主要由Mg、F、O、Al等4种元素组成,表面氧化膜主要由MgF2和MgO两相组成。随着四氟丙烯浓度增加,表面膜的致密度系数逐渐增加;熔炼温度升高,致密度系数逐渐减小。The characteristics of surface films of AZ91D melt protected in tetrafluoropropene/CO_(2)gases were investigated.The results reveal that the oxide film presents densification,which is mainly composed of Mg,F,O,and Al,and the main phases are MgF2and MgO.The coefficient of density is increased gradually with increasing in concentration of tetrafluoropropene,which is decreased gradually with the increase of melting temperature.

关 键 词：保护气氛 四氟丙烯 表面膜 致密度系数 

分 类 号：TG146.22[一般工业技术—材料科学与工程]