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.
| Original language | English |
|---|---|
| Pages (from-to) | 1452-1456 |
| Number of pages | 5 |
| Journal | Diamond and Related Materials |
| Volume | 15 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - Sep 2006 |
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Keywords
- Diamond crystal
- High pressure high temperature
- SiC
- Superhard materials
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Materials Chemistry
- Surfaces, Coatings and Films
- Surfaces and Interfaces
Cite this
Microstructure of diamond-SiC nanocomposites determined by X-ray line profile analysis. / Gubicza, J.; Ungár, T.; Wang, Y.; Voronin, G.; Pantea, C.; Zerda, T. W.
In: Diamond and Related Materials, Vol. 15, No. 9, 09.2006, p. 1452-1456.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Microstructure of diamond-SiC nanocomposites determined by X-ray line profile analysis
AU - Gubicza, J.
AU - Ungár, T.
AU - Wang, Y.
AU - Voronin, G.
AU - Pantea, C.
AU - Zerda, T. W.
PY - 2006/9
Y1 - 2006/9
N2 - 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.
AB - 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.
KW - Diamond crystal
KW - High pressure high temperature
KW - SiC
KW - Superhard materials
UR - http://www.scopus.com/inward/record.url?scp=33746602672&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33746602672&partnerID=8YFLogxK
U2 - 10.1016/j.diamond.2005.10.064
DO - 10.1016/j.diamond.2005.10.064
M3 - Article
AN - SCOPUS:33746602672
VL - 15
SP - 1452
EP - 1456
JO - Diamond and Related Materials
JF - Diamond and Related Materials
SN - 0925-9635
IS - 9
ER -