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Cavitation erosion of WC-Co
Bibliography: pages 68-70.
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| Format: | Thesis |
| Language: | English |
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Centre for Materials Engineering
2016
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| _version_ | 1867613171904151552 |
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| access_status_str | Open Access |
| author | Hankey, S E |
| author2 | Ball, Anthony |
| author_browse | Ball, Anthony Hankey, S E |
| author_facet | Ball, Anthony Hankey, S E |
| author_sort | Hankey, S E |
| collection | Thesis |
| description | Bibliography: pages 68-70. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/21135 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:31:54.917Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | Centre for Materials Engineering |
| publisherStr | Centre for Materials Engineering |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/21135 Cavitation erosion of WC-Co Hankey, S E Ball, Anthony Cavitation Tungsten-cobalt alloys - Metallurgy Materials Science Bibliography: pages 68-70. An investigation involving the vibratory cavitation erosion of WC-Co alloys was undertaken in order to determine the mechanisms of material removal. Nineteen grades of WC-Co alloys were studied. These alloys had been previously characterised according to microstructural and mechanical properties. Further characterisation by way of Young's modulus and density of the materials was undertaken. An investigation of the i nfluence of various parameters on cavitation erosion established a binder content dependence on erosion. For two grain sizes, erosion was found to increase to a maximum at 12 vo1-% binder content (1.8 μm grain size) and 23 vol-% binder (2.8 μm grain size). The main mode of material removal was found to be cobalt removal followed by WC grain pull-out. In high binder content alloys, cobalt removal was predominant with little loss of WC grains. X-ray diffraction showed that the allotropic phase transformation of the binder under cavitational attack was beneficial to the erosion resistance of these alloys. The erosion of low binder content alloys was controlled by the contiguity of the WC skeleton. Maximum erosion occurred at binder contents which corresponded to the combination of a fragile WC skeleton and a small volume of available cobalt for strain induced transformation. 2016-08-05T10:49:21Z 2016-08-05T10:49:21Z 1987 Master Thesis Masters MSc http://hdl.handle.net/11427/21135 eng application/pdf Centre for Materials Engineering Faculty of Engineering and the Built Environment University of Cape Town |
| spellingShingle | Cavitation Tungsten-cobalt alloys - Metallurgy Materials Science Hankey, S E Cavitation erosion of WC-Co |
| thesis_degree_str | Master's |
| title | Cavitation erosion of WC-Co |
| title_full | Cavitation erosion of WC-Co |
| title_fullStr | Cavitation erosion of WC-Co |
| title_full_unstemmed | Cavitation erosion of WC-Co |
| title_short | Cavitation erosion of WC-Co |
| title_sort | cavitation erosion of wc co |
| topic | Cavitation Tungsten-cobalt alloys - Metallurgy Materials Science |
| url | http://hdl.handle.net/11427/21135 |
| work_keys_str_mv | AT hankeyse cavitationerosionofwcco |