共搜索到9条信息，每页显示10条信息，共1页。用时：0小时0分0秒457毫秒
of Co Sb H 2O system shows that the thermodynamic driving power of removal of cobalt by cementation using zinc powder is raised when metallic compound (CoSb) is formed between cobalt and antimony... that cobalt and antimony form metallic compound (CoSb) , zinc exsits in the forms of basic zinc sulphate, zinc oxide and zinc. [ Keyword: Sb 2O 3; zinc sulphate electrolyte......
机械球磨和烧结制备CoSb3的工艺研究 宋新莉1,朱文1,杨君友1,彭江英1,张同俊1,陈跃华1 (1.华中科技大学,模具技术国家重点实验室,湖北,武汉,430074) 摘要:针对skutterudite材料制备工艺中熔融法和固相反应法合成周期长,工序多的不足,尝试将机械合金化法应用于skutterudite材料制备中.探讨了CoSb3的机械合金化和烧结制备工艺,研究表明,Co,Sb粉末的机械合金化在球磨10 h后开始,球磨40h后已全部合金化,得到CoSb,和CoSb2相混合物.合金化过程中CoSb3相先于CoSb2相形成.采用球磨10 h-700℃烧结2 h的工艺可得到单相CoSb3,制备工序简单,所需时间大大缩短. 关键词:热电材料; skutterudite; CoSb3; 机械合金化; 烧结; [全文内容正在添加中] ......
sintering.The effect of Yb-filling on thermoelectric property of unfilled skutterudite CoSb 3 was investigated,which indicated the enhancement of the power factor of the material.Transport properties......
sintering.The effect of Yb-filling on thermoelectric property of unfilled skutterudite CoSb 3 was investigated,which indicated the enhancement of the power factor of the material.Transport properties......
TGZM效应下Co-87.9%Sb合金糊状区的组织演化及成分变化王洪强,李双明,常雪晴,钟宏西北工业大学凝固技术国家重点实验室摘 要:以TGZM(temperature gradient zone melting)效应为理论基础,将Co-87.9%Sb(质量分数,下同)合金置于定向凝固设备中加热熔化,在一定温度梯度下分别保温20 min,2 h,4 h后淬火,对其糊状区的凝固组织和成分分布进行了研究.结果表明:在一定温度梯度下,介乎于完全液相区和未熔固相区之间存在着固/液相共存的糊状区,Co-87.9%Sb合金的糊状区沿温度梯度方向分为CoSb3+L,CoSb2+L以及CoSb+L 3层;在TGZM效应作用下,随着保温时间的增加,糊状区内液相体积分数逐渐减少,糊状区与完全液相区界面向低温区移动;经保温......
. The phase of impurity dots was demonstrated to be CoSb through analysis of X-ray diffraction(XRD) and energy-dispersive spectrum(EDS). Impurity dots were induced by Ge substitution of Sb in the non......
后,使得净化过程优化控制困难,过程参数设定凭个人经验操作,主观性和盲目性大,锌粉消耗大. 净化除钴主要是通过在溶液中添加锌粉和锑盐,置换除去溶液中的杂质Co2+[8],其中锑盐作为活化剂.其化学反应方程为: Co2++SbO2+4H++Zn+3e=CoSb+Zn2++2H2O (1) = (2) 从上述反应方程式可以看出:硫酸锌溶液中加锌粉锑盐除钴过程复杂,并非简单......
interstitial Ni atoms. Furthermore, the same model was employed to describe other intermetallic compounds with NiAs-type structure, CoSb and NiSb in the Co-Sb and Ni-Sb binary systems and Co-Ni-Sb......
where C is the cloud factor measured in octas. If the collector is inclined, then its efficiency will be reduced by a sky view factor (1+cosb)/2 between the collector and the sky [16] where b......
