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Volume 14 (2000)
- Issue 4 Pages 278-
- Issue 3 Pages 190-
- Issue 2 Pages 92-
- Issue 1 Pages 67-
Volume 14, Issue 2
Displaying 1-2 of 2 articles from this issue
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Heng Wang, Naofumi Yamada, Masahiro Okaji2000 Volume 14 Issue 2 Pages 92-96
Published: April 30, 2000
Released on J-STAGE: May 12, 2009
JOURNAL FREE ACCESSThe linear thermal expansion coefficients(LTEC) of some different pieces of the grade GC-20SS of glassy carbon produced by Tokai Carbon Co. Ltd. Japan have been measured using both an interferometric dilatometer and a push-rod dilatometer in order to investigate the piece-to-piece and lot-to-lot consistency for thermal expansion. The results indicated that the differences in LTEC in the temperature range -50 to 220 °C for different pieces from the two glassy carbon lots are sufficiently small within ±4×10-8K-1, which is the same order of measurement uncertainty. Thus, no significant thermal expansion divergency exists among different pieces and lots of GC-20SS glassy carbon, this material seems to be a very promising candidate standard reference material for thermal expansion measurement.View full abstractDownload PDF (840K) -
Eisyun Takegoshi, Toyohiro Shibata, Yoshio Hirasawa, Akio Kosaka2000 Volume 14 Issue 2 Pages 97-100
Published: April 30, 2000
Released on J-STAGE: May 12, 2009
JOURNAL FREE ACCESSln this study, the thermal conductivity of magnetic fluids was measured by a transient hot wire method in change in the volume fraction of magnetite and surfactant and temperature. On the other hand, the themlal conductivity was calculated by the use of some well-known equations on the electrical conductivity of mixture. Consequently, the values calculated by Kerner's coating model were agreed comparatively.View full abstractDownload PDF (804K)
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