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ULTRAHIGH PRESSURE FABRICATION OF COMPOSITES CONTAINING SIC PLATELETS
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UNSPECIFIED (1995) ULTRAHIGH PRESSURE FABRICATION OF COMPOSITES CONTAINING SIC PLATELETS. BRITISH CERAMIC TRANSACTIONS, 94 (2). pp. 45-51. ISSN 0967-9782.
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Abstract
SiC-Si3N4 ceramic composites were fabricated at ultrahigh pressure (4 GPa), with widely differing concentrations of WC platelets. The effects of these pressures on the resulting ceramic phases were investigated using X-ray diffraction, magic angle spinning nuclear magnetic resonance, and transmission electron microscopy. Striking evidence was found for a polytypic hexagonal to cubic phase transformation in the SiC platelets. Some evidence of microstructural toughening mechanisms was identified in the composites from observations made on crack propagation. However the ultrahigh pressure processing was found to induce residual stresses, causing a severe reduction in the fracture toughness of the composites.
Item Type: | Journal Article | ||||
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Subjects: | T Technology > TP Chemical technology | ||||
Journal or Publication Title: | BRITISH CERAMIC TRANSACTIONS | ||||
Publisher: | INST MATERIALS | ||||
ISSN: | 0967-9782 | ||||
Official Date: | 1995 | ||||
Dates: |
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Volume: | 94 | ||||
Number: | 2 | ||||
Number of Pages: | 7 | ||||
Page Range: | pp. 45-51 | ||||
Publication Status: | Published |
Data sourced from Thomson Reuters' Web of Knowledge
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