Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
703192 | Diamond and Related Materials | 2006 | 5 Pages |
Abstract
Diamond composites with nanosize diamond crystals and nanosize SiC matrix were obtained at 8 GPa and temperatures varied between 1800 and 2000 °C. Multiple Whole Profile fitting method applied to X-ray diffractograms of sintered composites provided information on crystallite size and population of dislocations. When the temperature was increased at a constant pressure, it led to a growth of crystallite sizes in both phases and reduced population of dislocations. Porosity was limiting hardness of the specimens indicating importance of sample preparation prior to sintering nanosize diamond powders.
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Authors
J. Gubicza, T. Ungár, Y. Wang, G. Voronin, C. Pantea, T.W. Zerda,