ASTM D5470 방법으로 연강과 스테인리스강의 열전도도 측정시 열그리스의 영향

조영욱; 한병동; 이주호; 박성혁; 백주환; 조영래

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자료유형: 학술저널

저자정보: 조영욱 (부산대학교 재료공학과) 한병동 (재료연구소) 이주호 (전자부품연구원) 박성혁 (경북대학교 신소재공학부) 백주환 (부산대학교 재료공학과) 조영래 (부산대학교 재료공학과)

저널정보: 한국재료학회 한국재료학회지 한국재료학회지 제29권 제7호

발행연도: 2019.1

수록면: 443 - 450 (8page)

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Thermal management is a critical issue for the development of high-performance electronic devices. In this paper, thermal conductivity values of mild steel and stainless steel(STS) are measured by light flash analysis(LFA) and dynamic thermal interface material(DynTIM) Tester. The shapes of samples for thermal property measurement are disc type with a diameter of 12.6 mm. For samples with different thickness, the thermal diffusivity and thermal conductivity are measured by LFA. For identical samples, the thermal resistance($R_{th}$) and thermal conductivity are measured using a DynTIM Tester. The thermal conductivity of samples with different thicknesses, measured by LFA, show similar values in a range of 5 %. However, the thermal conductivity of samples measured by DynTIM Tester show widely scattered values according to the application of thermal grease. When we use the thermal grease to remove air gaps, the thermal conductivity of samples measured by DynTIM Tester is larger than that measured by LFA. But, when we did not use thermal grease, the thermal conductivity of samples measured by DynTIM Tester is smaller than that measured by LFA. For the DynTIM Tester results, we also find that the slope of the graph of thermal resistance vs. thickness is affected by the usage of thermal grease. From this, we are able to conclude that the wide scattering of thermal conductivity for samples measured with the DynTIM Tester is caused by the change of slope in the graph of thermal resistance-thickness.

#thermal conductivity #mild steel #light flash analysis #DynTIM Tester #thermal grease

참고문헌 (23)

참고문헌 신청

A. M. Hofmeister / 2012 / J. Non-Cryst. Solids 358:1072

A.I. Kovalev / 2016 / Influence of electronic structure, plasmon-phonon and plasmonpolariton excitations on anomalously low heat conductivity in TiAlN/ Ag nanoscale multilayer coatings / Current Applied Physics 16(4):459~468

B. D. Hahn / 2016 / Ceram. Int 42:18141

M. E. Raypah / 2016 / Appl. Therm. Eng 101:19

J. G. Kim / 2017 / Compos. Part B 110:1

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