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材料导热系数常用的测试方法有哪些?
在常温常压测量条件下,导热系数及热扩散系数的测量误差可控制在5%以内,随着温度的升高,误差会大幅度增大。 2.3 热线法 热线法(Hot Wire Method,HW)是基于常物性、均质、具有相同初始温度的无限大介质,在受到恒定线热源作用时,根据非稳态导热过程测量 ...
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