Thermal Diffusivity Measurements of Low Emissive Solid Materials by a Hemispherical Mirror Type Laser Flash Method.

• Hong Jong-Hee

  Small and Medium Business Administration, Korea

• Baba Tetsuya

  Nat'l. Res. Lab. of Metrology

• Shinzato Kan'ei

  Kyoto Electronics Co., Ltd.

Bibliographic Information

Other Title

• 半球面鏡式レーザフラッシュ法による低放射率材料の熱拡散率測定
• ハン キュウメンキョウシキ レーザ フラッシュホウ ニヨル テイ ホウシャリツ

Abstract

lt is a common practice to coat specimen surfaces with black thin films when thermal diffusivities of low emissive solid materials are measured with the laser flash method. Thin films coated on the specimen surfaces increase uncertainty of the measured thermal diffusivity values because of their thermal resistance. The laser flash method was improved by introducing two hemispherical mirrors facing both sides of the specimen surfaces in order to measure low emissive solid materials without coating. Thermal diffusivities of a gold specimen and an electrolytic iron specimen (NIST RM8421) roughened with GC#600 grinding paper were measured by this method with reproducibility better than 0.5% in standard deviation.

Journal

• Netsu Bussei

  Netsu Bussei 11 (4), 136-140, 1997

  JAPAN SOCIETY OF THERMOPHYSICAL PROPERTIES

Details

• CRID: 1390282679643003264
• NII Article ID: 10002396218
• NII Book ID: AN10064743
• DOI: 10.2963/jjtp.11.136
• ISSN: 1881414X
• ISSN: 0913946X
• NDL BIB ID: 4342951
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4342951
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed