摘要
稀土元素因其独特的理化性能而被广泛应用于材料科学领域。为得到理想的复合材料，在Ｎｉ－ Ｗ－ Ｐ－ ＳｉＣ复合电镀液中加入稀土氧化物二氧化铈制得ＣｅＯ２ － Ｎｉ－ Ｗ－ Ｐ－ ＳｉＣ复合镀层。利用电子探针Ｘ射线能谱仪、扫描电子显微镜和Ｘ射线衍射仪分析了镀层成分、形貌及组织结构。镀层中含４％ ～７ ％ 碳化硅和５％ ～１４％ 二氧化铈，在镀态下为非晶态，在２００℃时开始晶化，至５００℃时完全转变为晶态，热处理对镀层表面形貌无影响。表明ＣｅＯ２ － Ｎｉ－ Ｗ－ Ｐ－ＳｉＣ复合镀层具有良好的稳定性。
Rare earth elements are extensively adopted in materials industry for their peculiar physical and chemical properties. The purpose of the study was to develop a good composite material. Composite cerium dioxide-nickel-tungsten-phosphorus-silicon carbide electrodeposits were prepared by adding cerium dioxide in composite electrolyte. The composition, morphology and microstructure of composite deposits were analyzed by means of electron microprobe x-ray energy spectrum, scanning electron microscopy and x-ray diffraction. Amorphous deposits were obtained containing 4 to 7 weight percent silicon carbide and 5 to 14 weight percent cerium dioxide, the composite deposits transited to crystalline state when thermal treated to 200℃, and pure crystalline state was obtained at 500℃. Thermal treatment had no effect on morphology of the composite deposits. The results show that composite cerium dioxide-nickel-tungsten-phosphorus-silicon carbide electrodeposits have good thermal stability.
出处
《电镀与涂饰》
CAS
CSCD
2000年第1期5-8,共4页
Electroplating & Finishing
基金
云南省"九五"科技攻关资助项目!95B11 - 5
关键词
电沉积
复合镀
组织结构
镀层
电镀
cerium dioxide-nickel-tungsten-phosphorus-silicon carbide
electrodeposition
composite electroplating
microstructure
