Indentation fracture toughness and surface flaw analysis of sintered alumina/SiC nanocomposites
The fracture toughness (K1c) of pressureless-sintered monolithic α-alumina and its composites with 5, 10 and 15 vol% SiC nano-sized particles was investigated using Vickers indentation and a new Hertzian (ball) indentation technique. Both methods showed that the fracture toughness of the composites...
| Hauptverfasser: | , |
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| Format: | Journal article |
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1996
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| _version_ | 1826299760408002560 |
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| author | Anya, C Roberts, S |
| author_facet | Anya, C Roberts, S |
| author_sort | Anya, C |
| collection | OXFORD |
| description | The fracture toughness (K1c) of pressureless-sintered monolithic α-alumina and its composites with 5, 10 and 15 vol% SiC nano-sized particles was investigated using Vickers indentation and a new Hertzian (ball) indentation technique. Both methods showed that the fracture toughness of the composites is better than that of alumina, although the results from the Vickers indentations were complicated by a change in crack geometry from median/radial (alumina) to Palmqvist (composites) An analysis of the number and size of surface flaws using the Hertzian test indicates that, for the same polishing treatment, the composites have a better surface finish. © 1996 Elsevier Science Limited. |
| first_indexed | 2024-03-07T05:06:50Z |
| format | Journal article |
| id | oxford-uuid:da37f882-cbb4-4363-9ea5-48a56a1061d7 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T05:06:50Z |
| publishDate | 1996 |
| record_format | dspace |
| spelling | oxford-uuid:da37f882-cbb4-4363-9ea5-48a56a1061d72022-03-27T09:01:32ZIndentation fracture toughness and surface flaw analysis of sintered alumina/SiC nanocompositesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:da37f882-cbb4-4363-9ea5-48a56a1061d7Symplectic Elements at Oxford1996Anya, CRoberts, SThe fracture toughness (K1c) of pressureless-sintered monolithic α-alumina and its composites with 5, 10 and 15 vol% SiC nano-sized particles was investigated using Vickers indentation and a new Hertzian (ball) indentation technique. Both methods showed that the fracture toughness of the composites is better than that of alumina, although the results from the Vickers indentations were complicated by a change in crack geometry from median/radial (alumina) to Palmqvist (composites) An analysis of the number and size of surface flaws using the Hertzian test indicates that, for the same polishing treatment, the composites have a better surface finish. © 1996 Elsevier Science Limited. |
| spellingShingle | Anya, C Roberts, S Indentation fracture toughness and surface flaw analysis of sintered alumina/SiC nanocomposites |
| title | Indentation fracture toughness and surface flaw analysis of sintered alumina/SiC nanocomposites |
| title_full | Indentation fracture toughness and surface flaw analysis of sintered alumina/SiC nanocomposites |
| title_fullStr | Indentation fracture toughness and surface flaw analysis of sintered alumina/SiC nanocomposites |
| title_full_unstemmed | Indentation fracture toughness and surface flaw analysis of sintered alumina/SiC nanocomposites |
| title_short | Indentation fracture toughness and surface flaw analysis of sintered alumina/SiC nanocomposites |
| title_sort | indentation fracture toughness and surface flaw analysis of sintered alumina sic nanocomposites |
| work_keys_str_mv | AT anyac indentationfracturetoughnessandsurfaceflawanalysisofsinteredaluminasicnanocomposites AT robertss indentationfracturetoughnessandsurfaceflawanalysisofsinteredaluminasicnanocomposites |