DEVELOPMENT OF AC CALORIMETRIC METHOD FOR THERMAL-DIFFUSIVITY MEASUREMENT .4. FILMS WITH LOW THERMAL-DIFFUSIVITY AND VERY THIN-FILMS

被引：31

作者：

GU, YQ

HATTA, I

机构：

[1] Department of Applied Physics, Nagoya University, Chikusa-ku Nagoya

[2] A Research Fellow of the Japan Society for the Promotion of Science, On leave from the Department of Engineering Mechanics, Tsinghua University, Beijing

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1991年 / 30卷 / 06期

关键词：

THERMAL DIFFUSIVITY; AC CALORIMETRIC METHOD; THERMAL DIFFUSION LENGTH; THIN FILM; POLYMER; STAINLESS STEEL; GLASS; TEMPERATURE WAVES; COATING; THERMOCOUPLE;

D O I：

10.1143/JJAP.30.1295

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In the ac calorimetric thermal diffusivity measurement of a thin film with low thermal diffusivity and a very thin film, it happens that the atmosphere surrounding the films significantly affects thermal diffusivity measured when the contribution of propagation of ac temperature waves in the atmosphere is not neglected. In fact, the measurement in a polymer film or in a very thin film should be carried out under vacuum, in which ac temperature waves no longer propagate. The experimental tests were made for polypropylene films and a borosilicate glass plate. The measurement under vacuum is not always required for every kind of film. The condition which is required for the measurement in the air is discussed. In addition, various problems which occur in the measurement of thin films with low thermal diffusivity and very thin films are considered.

引用

页码：1295 / 1298

页数：4

共 5 条

[1] DEVELOPMENT OF AC CALORIMETRIC METHOD FOR THERMAL-DIFFUSIVITY MEASUREMENT .1. CONTRIBUTION OF THERMOCOUPLE ATTACHMENT IN A THIN SAMPLE [J].