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		<issn>1405-7743</issn>
		<label>lattes: 3455204481678421 3 RamosFlorTrav:2014:EvTrRe</label>
		<citationkey>RamosFlorTrav:2014:EvTrRe</citationkey>
		<title>Evaluacion tribologica de recubrimientos de NbC y VC sobre acero AISI D2 producidos por la tecnica deposicion difusion termo-reactiva (DTR)</title>
		<year>2014</year>
		<month>abr./jun.</month>
		<typeofwork>journal article</typeofwork>
		<secondarytype>PRE PI</secondarytype>
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		<size>4727 KiB</size>
		<author>Ramos, Marco Antonio Ramirez,</author>
		<author>Flores, Jon Jairo Olaya,</author>
		<author>Trava-Airoldi, Vladimir Jesus,</author>
		<group></group>
		<group></group>
		<group>LAS-CTE-INPE-MCTI-GOV-BR</group>
		<affiliation>Universidad Nacional de Colombia</affiliation>
		<affiliation>Universidad Nacional de Colombia</affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<electronicmailaddress>maaramirezra@unal.edu.co</electronicmailaddress>
		<electronicmailaddress>jjolayaf@unal.edu.br</electronicmailaddress>
		<electronicmailaddress>vladimir@las.inpe.br</electronicmailaddress>
		<e-mailaddress>marcelo.pazos@inpe.br</e-mailaddress>
		<journal>Ingenieria, Investigacion y Tecnologia</journal>
		<volume>16</volume>
		<number>2</number>
		<pages>287-294</pages>
		<secondarymark>B4_ENGENHARIAS_I</secondarymark>
		<transferableflag>1</transferableflag>
		<contenttype>External Contribution</contenttype>
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		<keywords>carburo de niobo, carburo de vanadio, desgastecoeficiente de fricción deposición difusion termo-reactiva, recumbrimientos, niobium carbide, vanadium varbide, wear, coefficient of friction, thermo-reactive deposition diffusion, coating.</keywords>
		<abstract>En este trabajo se obtuvieron recubrimientos de carburos de vanadio (VC) y carburos de niobio (NbC) sobre aceros para herramientas de la norma AISI D2 usando el sistema de deposición difusión termo reactiva (DTR). Los experimentos se realizaron en baño de sal (bórax Na2B4O7 - 10H2O) con disolución de ferro-niobio, ferro-vanadio y aluminio a una temperatura de tratamiento de 1000°C durante 3 horas. Los recubrimientos obtenidos se caracterizaron mediante microscopía electrónica de barrido (MEB) y difracción de rayos X (DRX). El comportamiento tribológico se estudió por la técnica de esfera sobre disco para determinar el coeficiente de fricción (COF) y la técnica de rayado para determinar el nivel adherencia. Los resultados se compararon con los substratos sin recubrimiento, el recubrimiento logró disminuir el coeficiente de fricción y aumento en la dureza del sistema debido a su naturaleza cerámica. ABSTRACT: In this work vanadium carbides (VC) and niobium carbide (NbC) coatings were produced on AISI D2 tool steels system using the thermo reactive deposition diffusion technique (TRD). The experiments were performed in a salt bath (borax) with dissolution of ferro-niobium, ferro-vanadium and aluminium at temperature treatment of 1000°C during 3 hours. The coatings obtained were characterized by scanning electron microscopy and X-ray diffraction. The tribological behavior was studied by the technique of pin on disc to define the coefficient of friction and scratch technique to determine the adhesion level. Results were compared with uncoated substrates, a decrease of the friction coefficient and an increase in the hardness was observed.</abstract>
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		<language>pt</language>
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		<tertiarymark>Trabalho não Vinculado à Tese/Dissertação</tertiarymark>
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		<notes>Setores de Atividade: Pesquisa e desenvolvimento científico.</notes>
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		<url>http://plutao.sid.inpe.br/rep-/sid.inpe.br/plutao/2014/12.01.13.59</url>
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