光声方法测量金属材料的热扩散率及热溢出率.pdf

第 40 卷第 6 期电子科技大学学报
2011年11月 Journal of University of Electronic Science and Technology of China Nov. 2011
光声方法测量金属材料的热扩散率及热溢出率
高椿明,鲁旭,张希仁,万丹,赵斌兴
(电子科技大学光电信息学院成都 610054)

【摘要】利用固体光声技术开展了对金属材料热扩散率及热溢出率的测量研究。首先,根据简化的R-G理论建立一维固
体光声池检测材料热性能的理论模型,搭建了相应的光声测试系统;然后检测了紫铜等标准样品的热扩散率及热溢出率,完
成了实验方法及系统的校准和验证;最后,对常见几种金属样品的热扩散率及热溢出率进行了检测。研究结果显示,利用固
体光声技术可以准确测量金属材料的热扩散率及热溢出率,测量结果与参考值的相对误差均在3%以下。
关键词金属材料; 金属材料; 光声技术; 固体光声池; 热扩散率; 热溢出率
中图分类号 O436 文献标识码 A doi:.1001-

Thermal Diffusivities and Thermal Effusivities of the Metal
Materials Studied by the Photoacoustic Technique

GAO Chun-ming, LU Xu, ZHANG Xi-ren, WAN Dan, and ZHAO Bin-xing
(School of Optoelectronic Information, University of Electronic Science and Technology of China Chengdu 610054)

Abstract The thermal diffusivities and thermal effusivities of metal materials have been measured by the
Photoacoustic Technique. Firstly, based on the simplified R-G model, the one-dimensional theory of photoacoustic
was analyzed. The corresponding experimental system has been set up, by which the photoaoustic signal of the
solid photoacoustic cell can be obtained. Secondly, the thermal diffusivity and thermal effusivity of reference
samples were measured, by which the experimental system can be validated. Finally, the diffusivities and
effusivities of severa