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  1. No Access

    Article

    Measurements of Thermal Diffusivity for Thin Slabs by a Converging Thermal Wave Technique

    The measurement of thermal diffusivity for thin slabs by a converging thermal wave technique has been studied. Temperature variation at the center of the heat source ring that is produced by a pulsed high-powe...

    Y. Joo, H. Park, H.-B. Chae, J.-K. Lee… in International Journal of Thermophysics (2001)

  2. No Access

    Article

    Thermal Diffusivity of Diamond Wafers Deposited with Multicathode dc Plasma-Assisted CVD

    A thermal diffusivity map for diamond wafers of 10-cm diameter was obtained using a converging thermal wave technique in a nondestructive and noncontact manner. Diamond wafers were deposited by seven-cathode d...

    H.-B. Chae, H. Park, J.-S. Hong, Y.-J. Han… in International Journal of Thermophysics (2001)

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    Article

    Thermal conductivity of unidirectionally oriented Si3N4w/Si3N4 composites

    β-silicon nitride whiskers were aligned unidirectionally in silicon nitride sintered with 2 wt% Al2O3 and 6 wt% Y2O3. It was be densified by the Gas Pressure Sintering (GPS) method. Thermal conductivity of the si...

    S. W. Lee, H. B. Chae, D. S. Park, Y. H. Choa, K. Niihara… in Journal of Materials Science (2000)

  4. No Access

    Article

    Thermal conductivity of CVD diamond films

    Diamond films 60 and 170 µm in thickness were grown by PACVD (plasma-assisted chemical vapor deposition) under similar conditions. The thermal diffusivity of these freestanding films was measured between 100 a...

    H. B. Chae, K. H. Park, D. J. Seong, J. C. Kim… in International Journal of Thermophysics (1996)

  5. No Access

    Article

    Thermal diffusivity measurements of foil-shaped materials by vectorial analysis using an AC calorimeter

    Measurements of thermal diffusivity of foil-shaped materials have been carried out using a photoirradiation-type AC calorimeter at room temperature. In this method the frequency effect, which is caused by heat...

    D. J. Seong, J. C. Kim, H. B. Chae in International Journal of Thermophysics (1996)

  6. No Access

    Article

    Microcalorimetry study of the monolayer4He ordering transition on single crystal graphite

    We have developed a low-temperature, ac microcalorimeter for exploring adsorption on a single 2.25 mm2 graphite leaf that is capable of 10 picoJoule/degree resolution. The microcalorimeter was used to determine t...

    H. B. Chae, Michael Bretz in Journal of Low Temperature Physics (1989)