纳米钛酸钾添加降低钛酸锶热导率的研究
ecreased Thermal Conductivity of SrTiO3 by adding Nano-sized potassium titanate
铌掺杂钛酸锶材料是n型热电氧化物陶瓷中最有效的材料之一，但其热导率仍然很高，限制了其热电优值的进一步提高。钛酸钾纳米线相对于钛酸锶有非常低的热导率。本文通过添加纳米尺度的低热导率添加剂钛酸钾纳米线，有效降低了钛酸锶块体材料的热导率，并解释了钛酸锶热导率降低的机制。
Nb-doped SrTiO3 is a good candidate for n-type oxide thermoelectric material. However, high thermal conductivity limited the enhancement in figure of merit, ZT value. Compared with SrTiO3, nano-sized potassium titanate has the much lower thermal conductivity. In this paper, the thermal conductivity of SrTiO3 bulk materials was decreased effectively by adding potassium titanate nanowires. The reason for the decrease of thermal conductivity was investigated.
王宁、何泓材、陈海军
热力工程、热机物理学能源动力工业经济
无机陶瓷材料钛酸锶钛酸钾热导率声子散射
inorganic ceramic materialsstrontium titanatepotassium titanatethermal conductivityphonon scattering
王宁,何泓材,陈海军.纳米钛酸钾添加降低钛酸锶热导率的研究[EB/OL].(2012-02-07)[2025-08-16].http://www.paper.edu.cn/releasepaper/content/201202-67.点此复制
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