| 急冷甩带过程和过量Te对p型Bi0.5Sb1.5Te3化合物热电性能的影响 |
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| 引用本文： | 丁正,王忠.急冷甩带过程和过量Te对p型Bi0.5Sb1.5Te3化合物热电性能的影响[J].金属功能材料,2011,18(6):15-19. |
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| 作者姓名： | 丁正 王忠 |
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| 作者单位： | 北京有色金属研究总院动力电池研究中心,北京,100088 |
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| 摘 要： | 采用感应熔炼制备得到了P型Bi0.5 Sb1.5Te3+x％(质量)Te(x=0、2、4和6)合金.将合金均匀分成R和S两组,R组不作处理,S组通过急冷甩带过程获得厚度约为5～15 μm的薄带,然后将两组样品分别粉碎过筛后,热压烧结成块体材料.利用扫描电镜(SEM)观察了薄带和烧结块体的形貌结构,在室温下测量其电性能....
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| 关 键 词： | 感应熔炼 急冷甩带 电性能 功率因子 |
Effect of Ultra-rapid Quenching Process and Excessive Te on Thermoelectric Properties for p-type Bi_(0.5)Sb_(1.5)Te_3 |
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| DING Zheng
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WANG Zhong.Effect of Ultra-rapid Quenching Process and Excessive Te on Thermoelectric Properties for p-type Bi_(0.5)Sb_(1.5)Te_3[J].Metallic Functional Materials,2011,18(6):15-19. |
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| Authors: | DING Zheng WANG Zhong |
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| Affiliation: | DING Zheng,WANG Zhong(Research Centre of Power Battery,Beijing General Research Institute for Nonferrous Metals,Beijing 100088,China) |
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| Abstract: | p-type Bi0.5Sb1.5Te3 ＋x wt%Te（x=0～6）ingots were prepared by the induction melting route.Ingots were divided into two groups evenly,group R was not processed,group S was deal with a ultra rapid quenching process,and the thickness of foils was found to vary in the range of 5 to 15 μm.The ingots of group R and foils of group S were crushed and sieved to prepare powders separately.Bulk materials were obtained by hot pressing.The morphology of foils and bulk materials were observed by scanning electron microscopy（SEM） and electrical properties were measured at room temperature.The results showed that the power factor of two groups decrease and then increase similarly with the increase of extra Te content.The maximum power factor value were 2.78 and 3.14×10-3 W/mK2 for x=2.Compared with samples of group R,the power factor value also had been some improvement. |
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| Keywords: | induction melting ultra rapid quenching electrical properties power factor |
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