镁基储氢合金粉末的微包覆方法  

ENCAPSULATION OF Mg-BASED HYDROGEN STORAGE ALLOY POWDER

作　　者：陈阳国[1] 汪根时[2] 袁华堂[2] 张允什[2] 

机构地区：[1]中南工业大学冶金物理化学与化学新材料研究所 [2]南开大学新能源材料化学研究所

出　　处：《功能材料与器件学报》1998年第1期1-6,共6页Journal of Functional Materials and Devices

摘　　要：研究出一种方法，在含Ｆ－的酸性溶液中，成功地在镁基储氢合金粉末颗粒表面包覆一层ＮｉＰ复合层，并给出了最佳包覆条件，可以容易而有效地控制包覆量。包覆层中磷的含量为３～５％。采用ｘ射线衍射、扫描电镜分析、光电子能谱分析等方法对包覆层进行了检测。? Mg-based hydrogen storage alloy powder was microencapsulated successfully with a Ni-P composite layer in acid solution containing F- ion The weight increase of Ni-P microencapsulated layer could be controlled easily The content of P in the microencapsulated layer was 3～ 5% The x-ray diffractionanalysis (XRD) indicated that the crystal structure of Mg-based alloy was not affected in process of microencapsulating The SEM images showed that surface of coated alloy powder was encapsulated compactly by spherical particles, while the surface of uncoated alloy powder particle was smooth The XPS analysis indicated that the Ni in coated layer is of free state The encapsulated Mg-based alloy powder was of great anti-corrosion ability in the base solution

关 键 词：镁基 储氢合金 微包覆 F-体系 粉末包覆 

分 类 号：TG139.7[一般工业技术—材料科学与工程] TF121[金属学及工艺—合金]