Research on properties of Ca-Co-O thermoelectric material with adding Sm

• 作 者: XianjinYu;LipengZhang;YunhuiDong;DegangLi;ZhongfangLi;
• 机 构: Shandong University of Technology, Dept of Chemical Engineering, Zibo,25 5091,P.R.China
• 出 处: 第五届国际湿法冶金学术会议(5th International Conference on Hydrometallurg
• 发表日期: 2009年期

　　Precursor powders of the Ca-Co-O thermoelectric material were synthesized with Sm(NO3)3, Ca(NO3)2·4H2O and Co(NO3)2·6H2O by sol-gel process.The size 8mm×8mm×30mm samples were prepared by cold pressing forming at 30MPa with the method of powder metallurgic process.The samples were dried in 24 hours at 100~ 110 ℃,sintered for 5 hours at 900℃ in stove (SGQ-4-17) and then colded to room temperature following stove temperature (cooling velocity V≤5 ℃/min).