Microstructure of Diamond-SiC Nanocomposites Determined by X-ray Line Profile Analysis
Journal Article
·
· Diamond Relat. Mater.
Diamond composites with nanosize diamond crystals and nanosize SiC matrix were obtained at 8 GPa and temperatures varied between 1800 and 2000 degrees 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.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source
- Sponsoring Organization:
- Doe - Office Of Science
- DOE Contract Number:
- DE-AC02-98CH10886
- OSTI ID:
- 913999
- Report Number(s):
- BNL-78567-2007-JA; TRN: US0801463
- Journal Information:
- Diamond Relat. Mater., Vol. 15, Issue 9
- Country of Publication:
- United States
- Language:
- English
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