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dc.contributor.authorPark, WIko
dc.contributor.authorJung, SMko
dc.contributor.authorSasaki, Yko
dc.date.available2016-04-01T02:27:46Z-
dc.date.created2011-01-13-
dc.date.issued2010-01-
dc.identifier.citationISIJ INTERNATIONAL, v.50, no.11, pp.1546 - 1551-
dc.identifier.issn0915-1559-
dc.identifier.other2011-OAK-0000022591-
dc.identifier.urihttps://oasis.postech.ac.kr/handle/2014.oak/25179-
dc.description.abstractNitrogen addition to stainless steels is very effective for improving mechanical properties and corrosion resistance. N-2 solution nitriding is one of the possible methods to produce high nitrogen stainless steel. However, the nitriding rate by N-2 gas is significantly small and also the attainable nitrogen contents in Fe-Cr alloys is less than 1 mass% in general. NH3 nitriding is an attractive alternative since NH3-H-2 gas mixtures have high corresponding nitrogen potential than that of pure N-2 gas. In the present study, aiming for the enhancement of the nitriding rate and the increase of nitrogen contents more than 1 mass%, NH3 and N-2 solution nitriding of Fe-Cr alloys under various conditions has been carried out and their behaviors of nitrogen absorption in Fe-Cr alloys are investigated. It is found that the suppression of the pre-decomposition of NH3 before it reaches the sample is critical for the effective NH3 nitriding. Compared with the N contents after 1 h nitriding, NH3 nitriding is found to be about 5 times faster than that of N-2 (0.1 MPa) nitriding under the present experimental conditions. In addition the N contents more than 1 mass% were easily achieved by NH3 nitriding. By using devised NH3 gas injection system to minimize the pre-decomposition of NH3 gas, austenitic Fe-23.5Cr alloys with more than 3 mass% of nitrogen (ultra high nitrogen stainless steel) that had never been achieved by solution nitriding was successfully produced.-
dc.description.statementofresponsibilityX-
dc.languageEnglish-
dc.publisherIRON STEEL INST JAPAN KEIDANREN KAIKAN-
dc.subjecthigh nitrogen stainless steel-
dc.subjectnickel-free austenitic stainless steel-
dc.subjectnitrogen-alloying-
dc.subjectNH3 solid solution nitriding-
dc.subjectABSORPTION-
dc.titleFabrication of Ultra High Nitrogen Austenitic Stainless Steel by NH3 Solution Nitriding-
dc.typeArticle-
dc.contributor.college철강대학원-
dc.author.googlePark, WI-
dc.author.googleJung, SM-
dc.author.googleSasaki, Y-
dc.relation.volume50-
dc.relation.issue11-
dc.relation.startpage1546-
dc.relation.lastpage1551-
dc.contributor.id10200297-
dc.publisher.locationJA-
dc.relation.journalISIJ INTERNATIONAL-
dc.relation.indexSCI급, SCOPUS 등재논문-
dc.relation.sciSCI-
dc.collections.nameJournal Papers-
dc.type.rimsART-
dc.contributor.localauthorJung, SM-
dc.contributor.localauthorSasaki, Y-
dc.contributor.nonIdAuthorPark, WI-
dc.identifier.wosid000284967700005-
dc.date.tcdate2019-02-01-
dc.citation.endPage1551-
dc.citation.number11-
dc.citation.startPage1546-
dc.citation.titleISIJ INTERNATIONAL-
dc.citation.volume50-
dc.description.journalClass1-
dc.description.wostc4-

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