Effects of Preparation Techniques on the Thermoelectric Properties and Pressive Strengths of n-type Bi2Te3 Based Materials
Source abstract
Abstract
以商用区熔(ZM)n型Bi 2 Te 3 基材料为原料, 采用简单研磨结合放电等离子烧结技术(ZM+SPS)和熔体旋甩(MS)结合放电等离子烧结技术(MS+SPS)制备了n型Bi 2 Te 3 基块体热电材料. 对三种不同工艺制备出样品的微结构、热电性能和力学性能进行了研究. FESEM微结构表征结果表明: 区熔样品的晶粒粗大, 有较强的取向性; 经SPS烧结后, 晶粒细化, 取向性大为降低; 而区熔样品经MS+SPS后, 晶粒得到进一步细化, 且没有明显的取向性. 对三组样品进行的热电性能和抗压强度测试, 结果表明: 区熔原料最大 ZT 值为0.72(430K), 抗压强度仅为40MPa; 经SPS后, 样品的最大 ZT 值为0.68(440K), 抗压强度为110MPa, 相比区熔样品提高了175%; MS+SPS样品的最大 ZT 值为0.96(320K), 其室温 ZT 值相比区熔样品提高了64%, 抗压强度相比区熔样品提高了400%, 达到200MPa.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advanced Thermoelectric Materials and Devices · Thermal Radiation and Cooling Technologies · Thermal properties of materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (14)
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