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dc.contributor.authorNorafifah, H.
dc.contributor.authorNoordin, M.
dc.contributor.authorIzman, S.
dc.contributor.authorKurniawan, Denni
dc.date.accessioned2018-05-18T08:00:43Z
dc.date.available2018-05-18T08:00:43Z
dc.date.created2018-05-18T00:23:20Z
dc.date.issued2013
dc.identifier.citationNorafifah, H. and Noordin, M. and Izman, S. and Kurniawan, D. 2013. Acid pretreatment of WC-Co for surface roughening and cobalt removal prior to CVD diamond coating, pp. 592-596.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/68069
dc.identifier.doi10.4028/www.scientific.net/AMM.315.592
dc.description.abstract

Chemical vapor deposition (CVD) diamond coatings are being developed to be applied on carbide cutting tools to enhance wear resistance and increase tool life. As a prerequisite, for ensuring adhesion of CVD diamond on tungsten carbide substrate, it is necessary to prepare high surface roughness and to remove the cobalt on tungsten carbide surface during the pretreatment. In this study, a two step acid pretreatment was examined for those purposes. Etching using modified Murakami's reagent was initially performed to roughen the surface. Subsequently, the carbide was immersed in nitric acid to remove cobalt. Concentration of the acid solutions and reaction time were varied. Results showed that the initial step by modified Murakami's reagent etching resulted in a surface roughness of Ry = 6.95 µm, which is a 15% increase from the average initial surface roughness. The second step by nitric acid immersion on modified Murakami's reagent etched carbide samples resulted in carbide surfaces with zero cobalt content, confirming the effectiveness of the pretreatment. © (2013) Trans Tech Publications, Switzerland.

dc.titleAcid pretreatment of WC-Co for surface roughening and cobalt removal prior to CVD diamond coating
dc.typeConference Paper
dcterms.source.volume315
dcterms.source.startPage592
dcterms.source.endPage596
dcterms.source.titleApplied Mechanics and Materials
dcterms.source.seriesApplied Mechanics and Materials
dcterms.source.isbn9783037856352
curtin.departmentCurtin Malaysia
curtin.accessStatusFulltext not available


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