樊希安
,
杨君友
,
陈柔刚
,
朱文
,
鲍思前
功能材料
在分析块体Bi2Te3基热电材料性能优化设计思路的基础上,重点探讨了成分优化、结构优化、合成优化及成型优化中提高块体Bi2Te3基热电材料性能的方法.提出了一套值得探讨的优化设计方案,展望了Bi2Te3基热电材料在温差发电和半导体制冷领域颇具潜力的应用前景.
关键词:
Bi2Te3
,
热电材料
,
热挤压
,
等离子活化烧结
,
优化设计
Yuanyuan LI
材料科学技术（英文）
Fe-2Cu-2Ni-1Mo-0.8C (wt pct) elemental mixed powders were rapidly sintered within 6~min by spark plasma sintering, and the effects of sintering parameters on the densification degree and performance of the as-sintered materials were investigated. Results showed that when a proper combination of pulse electric current and constant electric current was employed for sintering, the density and bend strength of the as-sintered material reached the maxima, being 7.61×103 kg/m3 and 1540 MPa, respectively. Its corresponding fracture morphology was characterized as the mix of ductile, intergranular and cleavage fractures.
关键词:
Spark plasma sintering
,
密度
,
组织性能
,
铁基合金
