摘要
选用工业生产的SiC粉,利用非均相沉淀法,将Cu均匀地包裹在SiC表面,得到了包裹均匀的Cu/SiC复合粉体。通过调节反应溶液的pH值控制SiC颗粒表面的zeta电位,解决包覆过程中颗粒团聚的问题。X射线衍射分析表明:经过包覆反应能够得到大部分包裹着Cu相的SiC颗粒。SEM形貌观察分析表明:SiC颗粒的大小、形状均对包覆效果有影响,小的SiC颗粒比大的包覆效果好,球形颗粒比其他形貌的包覆效果好。
The SiC composite particles coated with Cu homogeneously were prepared by the heterogeneous deposition method using industrial SiC particles. The glomeration between particles was avoided by controlling the zeta potential of SiC particles through adjusting the pH value of solution. The particles coated with Cu were characterized by SEM and XRD techniques. It is found that most of Cu-coated SiC particles are crystallites. The coating structure is affected by the size and shape of SiC particles. Finer and spherical SiC is easily coated than larger and irregular one.
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2004年第4期398-401,共4页
Journal of The Chinese Ceramic Society
关键词
铜
碳化硅
包裹
非均相沉淀
Agglomeration
Coating techniques
Copper
Metallizing
pH
Scanning electron microscopy
X ray diffraction analysis
