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		<doi>10.17563/rbav.v35i1.1015</doi>
		<issn>0101-7659</issn>
		<citationkey>SilvaNetoRoFrCoCaCoTr:2016:WCSuPr</citationkey>
		<title>WC-Co substrate preparation and deposition conditions for high adhesion of CVD diamond coating</title>
		<year>2016</year>
		<month>jan./abr.</month>
		<typeofwork>journal article</typeofwork>
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		<author>Silva Neto, José V.,</author>
		<author>Rodríguez, Laura A. A.,</author>
		<author>Fraga, Mariana Amorim,</author>
		<author>Contin, Andre,</author>
		<author>Campos, Raonei A.,</author>
		<author>Corat, Evaldo José,</author>
		<author>Trava Airoldi, Vladimir Jesus,</author>
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		<group>LAS-CTE-INPE-MCTI-GOV-BR</group>
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		<group>LAS-CTE-INPE-MCTI-GOV-BR</group>
		<group>LAS-CTE-INPE-MCTI-GOV-BR</group>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
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		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<affiliation></affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<electronicmailaddress>jvneto.ifsp@gmail.com</electronicmailaddress>
		<electronicmailaddress></electronicmailaddress>
		<electronicmailaddress>mariana.fraga@inpe.br</electronicmailaddress>
		<electronicmailaddress>andre.contin@las.inpe.br</electronicmailaddress>
		<electronicmailaddress></electronicmailaddress>
		<electronicmailaddress>evaldo.corat@inpe.br</electronicmailaddress>
		<electronicmailaddress>vladimir.airoldi@inpe.br</electronicmailaddress>
		<journal>Revista Brasileira de Aplicações de Vácuo</journal>
		<volume>35</volume>
		<number>1</number>
		<pages>53-57</pages>
		<secondarymark>B3_INTERDISCIPLINAR B3_ENGENHARIAS_II B4_MATERIAIS B4_ENGENHARIAS_III B5_MEDICINA_II B5_ENGENHARIAS_IV B5_CIÊNCIAS_SOCIAIS_APLICADAS_I C_ASTRONOMIA_/_FÍSICA</secondarymark>
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		<keywords>CVD diamond, WC-Co substrate, Adhesion, Diamante CVD, Substrato de WC-Co, Adesão.</keywords>
		<abstract>Different substrate surface pretreatments have been used to improve the adhesion of CVD diamond coatings on WC-Co substrates. This paper reports the results of a pretreatment method based on two-step chemical etching: first in Murakami solution and then in aqua regia. A systematic study was performed to evaluate the influence of the pretreatment on the composition and morphology of the WC-Co substrate. Furthermore, the effect of diamond nanoparticle seeding on the morphology and roughness of the substrate was also investigated. After these studies, diamond coating was deposited on seeded WC-Co substrate by hot-filament CVD. The sample was characterized by Raman spectroscopy, FEG-SEM and AFM. Rockwell C indentation test was used to evaluate the adhesion between the CVD diamond coating and the WC-Co substrate. RESUMO: Diferentes pré-tratamentos têm sido utilizados para melhorar a adesão de revestimentos de diamante CVD sobre substratos de WC-Co. Este artigo relata um método de pré-tratamento químico baseado em duas etapas de corrosão: primeiro em solução de Murakami e depois em água régia. Um estudo sistemático foi realizado para avaliar a influência do pré-tratamento sobre a composição e a morfologia do substrato de WC-Co. O efeito do processo de semeadura com nanopartículas de diamante sobre a morfologia e a rugosidade do substrato foi também investigado. Após esses estudos, o revestimento de diamante CVD foi depositado sobre o substrato de WC-Co pela técnica de filamento quente. A amostra foi caracterizada por espectroscopia Raman, FEG-SEM e AFM. A adesão entre o revestimento de diamante CVD e o substrato de WC-Co foi avaliada por indentação Rockwell C.</abstract>
		<area>FISMAT</area>
		<language>en</language>
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