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韩国电工技术研究院J.H.Son等人用高能球磨粉末制造p-型(Bi,Sb)2Te3化合物,研究其热电性能同球磨时间关系。X-射线分析和微观形貌证明长球磨时间粉末制成的试样晶粒很细。球磨时间长(>24h)的试样同球磨时间短的试样比较,高温下的晶格热导率较低,这是由于它的晶粒较细。塞贝克系数和电阻率随球磨时间长短变化很大,经24h球磨后试样载流子浓
Korea Institute of Electrotechnical J.H. Son, who made high-energy ball milling powder p-type (Bi, Sb) 2Te3 compounds to study the relationship between the thermoelectric properties and milling time. X-ray analysis and microscopic morphology prove that the long grain milling time powder sample made of very fine grains. Samples with longer ball milling time (> 24 h) have lower lattice thermal conductivity at high temperatures due to their finer grains than samples with short ball milling time. Seebeck coefficient and resistivity vary greatly with the milling time, after 24h ball milling sample carrier concentration