Thermal properties of diamond/carbon composites : доклад, тезисы доклада


Тип публикации: доклад, тезисы доклада, статья из сборника материалов конференций

Конференция: European Conference on Diamond, Diamond-Like Materials, Nitrides and Silicon Carbide

Год издания: 2000

Ключевые слова: diamond composites, laser flash technique, tem, thermal conductivity

Аннотация: The thermal conductivity, k, of diamond/carbon composites with different ratios of sp(2)/sp(3)-bonded carbon is measured by the laser flash technique. The thermal conductivity of nanocomposites containing 6 nm diamond particles falls within the range of k = 0.003-0.017 W/cmK; at room temperature. The thermal conductivity increases Показать полностьюwhile nanopores are gradually filled with pyrolytic carbon (pyrocarbon/diamond mass ratio variation of 0.0-0.5). Transmission electron microscopy data reveal a fairly uniform mixture of two carbon phases, the diamond and matrix having similar grain sizes. Estimates show that the phonon free path is limited by dimensions of carbon matrix layer. Thermal data for coarse-grain (1-2 mu m) composites are also given for comparison. (C) 2000 Elsevier Science S.A. All rights reserved.

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Журнал: Diamond and related materials

Выпуск журнала: Т. 9, вып. 3-6

Номера страниц: 1104-1109

ISSN журнала: 09259635

Место издания: Lausanne, Switzerland

Издатель: Elsevier science


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