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    • 5. 发明授权
    • Thermoelectric properties by high temperature annealing
    • 高温退火的热电性能
    • US07591913B2
    • 2009-09-22
    • US11100950
    • 2005-04-06
    • Zhifeng RenGang ChenShankar KumarHohyun Lee
    • Zhifeng RenGang ChenShankar KumarHohyun Lee
    • C22C1/00H01L21/00
    • H01L35/22C22C1/005C22C11/00C22C12/00C22C28/00C22F1/00H01L35/16
    • The present invention generally provides methods of improving thermoelectric properties of alloys by subjecting them to one or more high temperature annealing steps, performed at temperatures at which the alloys exhibit a mixed solid/liquid phase, followed by cooling steps. For example, in one aspect, such a method of the invention can include subjecting an alloy sample to a temperature that is sufficiently elevated to cause partial melting of at least some of the grains. The sample can then be cooled so as to solidify the melted grain portions such that each solidified grain portion exhibits an average chemical composition, characterized by a relative concentration of elements forming the alloy, that is different than that of the remainder of the grain.
    • 本发明通常提供了通过使合金呈现出一种或多种高温退火步骤来提高合金的热电性能的方法,所述高温退火步骤在合金呈现混合的固相/液相的温度下进行,然后进行冷却步骤。 例如,在一个方面,本发明的这种方法可以包括使合金样品经受足够升高的温度以引起至少一些晶粒的部分熔融。 然后可以将样品冷却以固化熔融的颗粒部分,使得每个固化的颗粒部分显示平均化学组成,其特征在于形成合金的元素的相对浓度,其不同于其余颗粒的元素的相对浓度。