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		<issn>0168-583X</issn>
		<issn>0167-5087</issn>
		<citationkey>GomesUedBelReuRic:2005:ChEnAI</citationkey>
		<title>Chromium enrichment of AISI 304 stainless steel surface after nitrogen ion recoil bombardment of chromium film</title>
		<project>Implantação Iônica por Imersão em Plasma (IIIP)</project>
		<year>2005</year>
		<month>Oct.</month>
		<secondarytype>PRE PI</secondarytype>
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		<author>Gomes, Geraldo Francisco,</author>
		<author>Ueda, Mário,</author>
		<author>Beloto, Antonio Fernando,</author>
		<author>Reuther, H.,</author>
		<author>Richter, E.,</author>
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		<affiliation>Instituto Nacional de Pesquisas Espaciais, Laboratório Associado de Plasmas (INPE. LAP)</affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais, Laboratório Associado de Plasma (INPE. LAP)</affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais, Laboratorio Associado de Sensores e Materiais (INPE. LAS)</affiliation>
		<affiliation>Forschungszentrum Rossendorf, Institute of Ion Beam Physics and Materials Research</affiliation>
		<affiliation>Forschungszentrum Rossendorf, Institute of Ion Beam Physics and Materials Research</affiliation>
		<journal>Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms</journal>
		<volume>240</volume>
		<number>1-2</number>
		<pages>194-198</pages>
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		<contenttype>External Contribution</contenttype>
		<keywords>PLASMA, Plasma immersion ions implantation, CEMS, AES, SS 304, Enhanced diffusion, Iron, PLASMA, Implantação iônica por imersão de plasma, Difusão reforçada, Ferro.</keywords>
		<abstract>When performing nitriding of stainless steels, there is a decrease or even complete depletion of chromium in the nitrogen rich region just beneath the surface, inhibiting the formation of passivated Cr oxide layer, beneficial to withstand corrosive attacks and Cr/Fe nitrides, responsible for hardness enhancement. To overcome this problem, a hybrid technique was used, consisting of depositing a thin chromium film on steel surface and then bombarding it with nitrogen ions. By a complex recoil process, chromium atoms are implanted into the steel matrix. Plasma immersion ion implantation (PIII) was used in this bombardment. The new Cr-rich layer allows the formation of Cr oxides and nitrides. Treated surfaces were characterized by Auger electron spectroscopy (AES) and conversion electron Mossbauer spectroscopy (CEMS), showing formation of a new Cr-rich layer.</abstract>
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		<language>en</language>
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