快淬和球磨时间对p型(Bi 0.25 Sb 0.75 ) 2 Te 3 合金热电性能的影响
Source abstract
Abstract
通过快淬?机械球磨?放电等离子烧结工艺制备了p型(Bi 0.25 Sb 0.75 ) 2 Te 3 块体热电材料. 在300~523K温度范围内对其电导率、Seebeck系数和热导率进行了测试, 并系统研究了快淬后球磨时间对合金热电性能的影响. 研究结果表明, 随着球磨时间的延长, 样品的电导率呈先降后升的趋势, Seebeck系数变化并不明显, 而热导率随球磨时间的延长逐渐下降. 球磨20h的样品在室温下具有最高的热电优值, 最大值达到0.96, 机械抗弯强度达到91MPa.
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Source: openalex_inverted_index · Quality: short
Research context
OpenAlex topics: Advanced Thermoelectric Materials and Devices · Semiconductor materials and interfaces · Electrical Contact Performance and Analysis
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