学术论文

      具有不同扩散势垒的p型(Bi1-0.85Sb0.85)和PbTe二元梯度热电材料的研制

      Fabrication and Characters of p-Type (Bi1-0.85Sb0.85)Te3 and PbTe Two Segments Graded Thermoelectric Materials with Different Barriers

      摘要:
      在分析了热电材料的发展背景和研究理论的基础 上,采用热压法制备出单体和双层具有不同扩散势垒的 (Bi)1-0.850.8)与PbTe体系二元 梯度热电材料.金属,Fe, Ni 和 Mg被用作层间扩散势垒材料.测定了它们的热 电性能,分析了它们的物质组成和各层内和层间的成分分布,确定出较好的扩散 势垒材料为金属铁和钴
      Abstract:
      On the basis of analysis of developing background and theory of thermoelectric graded materials, p-type (Bi1-0.85Sb0.85)Te3 and PbTe two segments thermoelectrical graded materials (TGM) with different barriers were fabricated by conventional hot-pressing process. Metals Fe, Ni and Mg were used as barriers between two segments. The thermoelectric properties were measured. The compositions of each layer and composition distributions in and between different layers were detected. It is demonstrated that better diffusion barriers materials were metal Fe.
      Author: XU Guiying Ge Changchun GAO Yanping ZHOU Zhangjian
      作者单位: 北京科技大学特种陶瓷与粉末冶金研究开发中心, 北京 100083
      刊 名: 北京科技大学学报 ISTICEIPKU
      年,卷(期): 2000, 22(4)
      分类号: O472 T304.2
      机标分类号: TG1 TM9
      在线出版日期: 2004年1月8日
      基金项目: 国家自然科学基金