摘要
采用粉体化学镀技术 ,以AgNO3取代常见的贵金属盐PdCl2 作为活化剂 ,H2 PO- 2 取代Sn2 + 作为还原剂 ,在空心微珠表面包覆NiCoP合金。利用扫描电镜、能谱分析仪分析包覆层的形貌和成分。结果表明NiCoP合金均匀包覆在空心微珠表面。并提出了这种改进工艺的一种可能的机理。
Replacing the conventional PdCl 2 activator with Ag NO 3 activator and replacing Sn 2+ with H 2PO- 2 as the reducing agent ,NiCoP alloy-coating of cenosphere particles is prepared by using the powder e lectroless coating. The morphology and composition of the cenosphere particles are characterized by means of SEM and EDX.Experimental results show that NiC oP alloys uniformly cover the surface of the cenosphere particles. The possibl e mechanism of modified NiCoP alloy-coat ing of cenosphere particles is suggested.
出处
《宇航材料工艺》
CAS
CSCD
北大核心
2004年第5期49-52,共4页
Aerospace Materials & Technology
基金
湖南省教育厅优秀青年基金资助 :0 3B 0 0 2
关键词
空心微珠
包覆
粉体
取代
PO
制备
合金
能谱分析
表面
形貌
Powder electroless coating, Surface modification,NiCoP-alloy, Cenosphe re particle, Silver nitrate, Activator
