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		<doi>10.1016/j.surfcoat.2016.12.100</doi>
		<issn>0257-8972</issn>
		<citationkey>MelloManSanViaUed:2017:ExStMe</citationkey>
		<title>Experimental study of mechanical and tribological behavior of nitrogen ion-implanted chromium thin films</title>
		<year>2017</year>
		<month>Feb.</month>
		<typeofwork>journal article</typeofwork>
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		<author>Mello, Carina Barros,</author>
		<author>Mansur, R. A. F.,</author>
		<author>Santos, Nazir Monteiro dos,</author>
		<author>Viana, W. E. S. S.,</author>
		<author>Ueda, Mário,</author>
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		<group>LABAP-COCTE-INPE-MCTIC-GOV-BR</group>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<affiliation>Universidade Federal do Rio de Janeiro (UFRJ)</affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<electronicmailaddress>carina.mello@inpe.br</electronicmailaddress>
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		<electronicmailaddress>nazir.santos@inpe.br</electronicmailaddress>
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		<electronicmailaddress>mario.ueda@inpe.br</electronicmailaddress>
		<journal>Surface and Coatings Technology</journal>
		<volume>312</volume>
		<pages>123-127</pages>
		<secondarymark>A1_MATERIAIS A1_ENGENHARIAS_II A2_SAÚDE_COLETIVA A2_INTERDISCIPLINAR A2_GEOCIÊNCIAS A2_ENGENHARIAS_III B1_ODONTOLOGIA B1_MEDICINA_II B1_ENGENHARIAS_IV B1_ASTRONOMIA_/_FÍSICA B2_QUÍMICA B2_CIÊNCIAS_BIOLÓGICAS_I</secondarymark>
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		<keywords>Chromium nitrides, Nitrogen implantation, Post-coating treatment, Tribology, X-ray photoelectron spectroscopy (XPS).</keywords>
		<abstract>Pure chromium coatings can act as decorative or corrosion-resistant coating, but they present poor tribological properties. Even electroplated hard chrome coatings present some problems, as micro-cracks that reduce their corrosion protection and induce fatigue failure. In addition, Cr plating and its dangerous process with Cr VI baths has been banished in several countries. Physical or chemical post-coating treatments can be applied onto coatings in order to enhance their surface properties, as high temperature oxidation, chemical baths or ion implantation. Plasma immersion ion implantation process was carried on PVD chromium coatings as a post-coating treatment and nitrogen ions were implanted on the surface of deposited chromium thin films, by means of two different plasma sources for ion implantation. Both configurations for plasma sources led to the formation of nitride compounds on the surface of the films. The treated films presented low coefficient of friction, high hardness and better adhesion when compared to the untreated film.</abstract>
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