Acid pretreatment of WC-Co prior to CVD diamond coating
Pretreatment on tungsten carbide (WC-Co) surface is critical for obtaining perfectly adherent diamond coatings by chemical vapor deposition (CVD). The carbide surface should have high roughness to facilitate diamond nucleation and adhesion. The presence of cobalt-common binder for tungsten carbide-o...
| Main Authors: | , , , |
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| Format: | Conference Paper |
| Published: |
2012
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| Online Access: | http://hdl.handle.net/20.500.11937/67115 |
| _version_ | 1848761478810697728 |
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| author | Noordin, M. Noor Adila, A. Izman, S. Kurniawan, Denni |
| author_facet | Noordin, M. Noor Adila, A. Izman, S. Kurniawan, Denni |
| author_sort | Noordin, M. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Pretreatment on tungsten carbide (WC-Co) surface is critical for obtaining perfectly adherent diamond coatings by chemical vapor deposition (CVD). The carbide surface should have high roughness to facilitate diamond nucleation and adhesion. The presence of cobalt-common binder for tungsten carbide-on the surface to be coated should be made minimum since it has negative influence on the diamond deposition process. In this study, surface pretreatment on tungsten carbide using sulfuric acid was evaluated in terms of the resulted cobalt removal and the surface roughening. The variables included were acid concentration, reaction temperature, and reaction time. The resulted surface roughness was 29% higher than initial, averaged at 1.07 µm. The acid pretreatment was also found effective in eliminating surface cobalt. © (2012) Trans Tech Publications, Switzerland. |
| first_indexed | 2025-11-14T10:32:19Z |
| format | Conference Paper |
| id | curtin-20.500.11937-67115 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:32:19Z |
| publishDate | 2012 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-671152018-05-18T08:06:03Z Acid pretreatment of WC-Co prior to CVD diamond coating Noordin, M. Noor Adila, A. Izman, S. Kurniawan, Denni Pretreatment on tungsten carbide (WC-Co) surface is critical for obtaining perfectly adherent diamond coatings by chemical vapor deposition (CVD). The carbide surface should have high roughness to facilitate diamond nucleation and adhesion. The presence of cobalt-common binder for tungsten carbide-on the surface to be coated should be made minimum since it has negative influence on the diamond deposition process. In this study, surface pretreatment on tungsten carbide using sulfuric acid was evaluated in terms of the resulted cobalt removal and the surface roughening. The variables included were acid concentration, reaction temperature, and reaction time. The resulted surface roughness was 29% higher than initial, averaged at 1.07 µm. The acid pretreatment was also found effective in eliminating surface cobalt. © (2012) Trans Tech Publications, Switzerland. 2012 Conference Paper http://hdl.handle.net/20.500.11937/67115 10.4028/www.scientific.net/AMR.576.626 restricted |
| spellingShingle | Noordin, M. Noor Adila, A. Izman, S. Kurniawan, Denni Acid pretreatment of WC-Co prior to CVD diamond coating |
| title | Acid pretreatment of WC-Co prior to CVD diamond coating |
| title_full | Acid pretreatment of WC-Co prior to CVD diamond coating |
| title_fullStr | Acid pretreatment of WC-Co prior to CVD diamond coating |
| title_full_unstemmed | Acid pretreatment of WC-Co prior to CVD diamond coating |
| title_short | Acid pretreatment of WC-Co prior to CVD diamond coating |
| title_sort | acid pretreatment of wc-co prior to cvd diamond coating |
| url | http://hdl.handle.net/20.500.11937/67115 |