摘要
高温下电沉积制备稀土铥及其合金的设备易腐蚀、能耗大。采用脉电沉积技术研究了室温下在有机溶剂二甲基亚砜中脉冲电沉积制备Tm -Fe合金 ,讨论了配位体对Tm -Fe合金电沉积的影响 :不用配位体时 ,稀土元素铥在沉积层中含量较高 ,但表面粗糙、附着力差 ,使用 3种不同的配位体都能改善沉积层的质量 ,其中以柠檬酸效果最好 ,置于空气中依然保持光亮 ,不易氧化。用扫描电子显微镜 (SEM)观察了Tm -Fe合金膜表面形貌 ,结果表明 ,沉积层金属颗粒呈球形、堆积较紧密 ,粒径大约为 30 0nm。X射线衍射分析表明 :室温下所得合金膜衍射峰是弥散的包峰 ,所得到的合金膜是非晶态的。
Corrosion of equipment and high energy - loss usually exist in the production of rare earth Tmand its alloys by electrodepositing under high temperature. Tm-Fe alloy was prepared by pulse technique in dimethylsulfoxide (DMSO) at room temperature, and the effects of three comple-xing agents were studied. Without complexing agent the content of rare earth Tm element is higher in the deposit but the depositing surface is roughness with bad adhesion. Three complexing agents all can improve the electrodepositing quality of Tm - Fe alloy films, and the citric acid is the best with which the alloy film is even and with metallic lustrous and oxidation resistance while exposed in the air. The Tm - Fe alloy films were characterized by scanning electron microscope (SEM) . The metallic grains on the deposit are compact and spherical with diameter about 300 nm. The Tm- Fe alloy films obtained at room temperature are amorphous by x - ray diffraction (XRD).
出处
《材料保护》
CAS
CSCD
北大核心
2004年第8期7-8,共2页
Materials Protection
基金
广东省自然科学基金资助课题 ( 0 112 15 )
