Oxidation Resistant Coating for Niobium by Combining Hot Dipping in Molten Aluminum Coating and Anodic Oxidation
The combination of hot dipping in molten aluminum and the subsequent anodic oxidation to dense Al2O3 films was studied to prepare an oxidation-resistant coating on niobium surface. By immersing Nb into a molten Al bath, granular NbAl3 was precipitated and improved the coherency of the film to the su...
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Veröffentlicht in: | Journal of the Japan Institute of Metals and Materials 1995, Vol.59(9), pp.967-972 |
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container_title | Journal of the Japan Institute of Metals and Materials |
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creator | Kumon, Takeshi F. Suzuki, Ryosuke O. Ono, Katsutoshi |
description | The combination of hot dipping in molten aluminum and the subsequent anodic oxidation to dense Al2O3 films was studied to prepare an oxidation-resistant coating on niobium surface. By immersing Nb into a molten Al bath, granular NbAl3 was precipitated and improved the coherency of the film to the substrate. Amorphous Al2O3 was formed by anodic oxidation of the Al layer and crystallized to corrosion resistant α-Al2O3 by the subsequent heat treatment. The Nb substrate after this combined treatment did not form any niobium oxides even after heating in air for 64.8 ks at 1073 K, and the oxygen increment in the Nb bulk was suppressed below 400 mass ppm. |
doi_str_mv | 10.2320/jinstmet1952.59.9_967 |
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By immersing Nb into a molten Al bath, granular NbAl3 was precipitated and improved the coherency of the film to the substrate. Amorphous Al2O3 was formed by anodic oxidation of the Al layer and crystallized to corrosion resistant α-Al2O3 by the subsequent heat treatment. The Nb substrate after this combined treatment did not form any niobium oxides even after heating in air for 64.8 ks at 1073 K, and the oxygen increment in the Nb bulk was suppressed below 400 mass ppm.</description><identifier>ISSN: 0021-4876</identifier><identifier>EISSN: 1880-6880</identifier><identifier>DOI: 10.2320/jinstmet1952.59.9_967</identifier><identifier>CODEN: NIKGAV</identifier><language>jpn</language><publisher>Sendai: The Japan Institute of Metals and Materials</publisher><subject>alumina coating ; aluminum film ; anodic oxidation ; hot dipping ; NbAl3 ; niobium ; oxidation resistance</subject><ispartof>Journal of the Japan Institute of Metals and Materials, 1995, Vol.59(9), pp.967-972</ispartof><rights>The Japan Institute of Metals</rights><rights>1996 INIST-CNRS</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c423t-5d5d9a17afc48d925b66bde582891040d3bc9aa18779fb5633bf6b344f1584363</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,1881,27922,27923</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=2911848$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Kumon, Takeshi F.</creatorcontrib><creatorcontrib>Suzuki, Ryosuke O.</creatorcontrib><creatorcontrib>Ono, Katsutoshi</creatorcontrib><title>Oxidation Resistant Coating for Niobium by Combining Hot Dipping in Molten Aluminum Coating and Anodic Oxidation</title><title>Journal of the Japan Institute of Metals and Materials</title><addtitle>J. Japan Inst. Metals and Materials</addtitle><description>The combination of hot dipping in molten aluminum and the subsequent anodic oxidation to dense Al2O3 films was studied to prepare an oxidation-resistant coating on niobium surface. By immersing Nb into a molten Al bath, granular NbAl3 was precipitated and improved the coherency of the film to the substrate. Amorphous Al2O3 was formed by anodic oxidation of the Al layer and crystallized to corrosion resistant α-Al2O3 by the subsequent heat treatment. The Nb substrate after this combined treatment did not form any niobium oxides even after heating in air for 64.8 ks at 1073 K, and the oxygen increment in the Nb bulk was suppressed below 400 mass ppm.</description><subject>alumina coating</subject><subject>aluminum film</subject><subject>anodic oxidation</subject><subject>hot dipping</subject><subject>NbAl3</subject><subject>niobium</subject><subject>oxidation resistance</subject><issn>0021-4876</issn><issn>1880-6880</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1995</creationdate><recordtype>article</recordtype><recordid>eNptkE1rGzEQhkVpISbJTwjoUHpbV98rHY3TxoV8QGjPQtJqU4VdaSPJ0Pz7yjgxPfQyM8w877zwAnCF0ZpQgr4-h1jq7CtWnKy5WiutRP8BrLCUqBOtfAQrhAjumOzFGbgsJViEkBJYILUCy8OfMJgaUoSPvoRSTaxwm9omPsExZXgfkg37GdrXtp5tiIfDLlV4HZblMIcI79JUfYSbaT-H2Nh3vYkD3MQ0BAdPNhfg02im4i_f-jn49f3bz-2uu324-bHd3HaOEVo7PvBBGdyb0TE5KMKtEHbwXBKpMGJooNYpY7DsezVaLii1o7CUsRFzyaig5-DL8e-S08vel6rnUJyfJhN92hdNBBKCCdVAfgRdTqVkP-olh9nkV42RPkSs_41Y8xbwIeKm-_xmYIoz05hNdKGcxERhLJls2O6IPbdsn_zpbnINbvL_ef7ucELcb5O1j_QvsbGZ4Q</recordid><startdate>19950901</startdate><enddate>19950901</enddate><creator>Kumon, Takeshi F.</creator><creator>Suzuki, Ryosuke O.</creator><creator>Ono, Katsutoshi</creator><general>The Japan Institute of Metals and Materials</general><general>Nippon Kinzoku Gakkai</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QF</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>19950901</creationdate><title>Oxidation Resistant Coating for Niobium by Combining Hot Dipping in Molten Aluminum Coating and Anodic Oxidation</title><author>Kumon, Takeshi F. ; Suzuki, Ryosuke O. ; Ono, Katsutoshi</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c423t-5d5d9a17afc48d925b66bde582891040d3bc9aa18779fb5633bf6b344f1584363</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>jpn</language><creationdate>1995</creationdate><topic>alumina coating</topic><topic>aluminum film</topic><topic>anodic oxidation</topic><topic>hot dipping</topic><topic>NbAl3</topic><topic>niobium</topic><topic>oxidation resistance</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kumon, Takeshi F.</creatorcontrib><creatorcontrib>Suzuki, Ryosuke O.</creatorcontrib><creatorcontrib>Ono, Katsutoshi</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Aluminium Industry Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Journal of the Japan Institute of Metals and Materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kumon, Takeshi F.</au><au>Suzuki, Ryosuke O.</au><au>Ono, Katsutoshi</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Oxidation Resistant Coating for Niobium by Combining Hot Dipping in Molten Aluminum Coating and Anodic Oxidation</atitle><jtitle>Journal of the Japan Institute of Metals and Materials</jtitle><addtitle>J. Japan Inst. Metals and Materials</addtitle><date>1995-09-01</date><risdate>1995</risdate><volume>59</volume><issue>9</issue><spage>967</spage><epage>972</epage><pages>967-972</pages><issn>0021-4876</issn><eissn>1880-6880</eissn><coden>NIKGAV</coden><abstract>The combination of hot dipping in molten aluminum and the subsequent anodic oxidation to dense Al2O3 films was studied to prepare an oxidation-resistant coating on niobium surface. By immersing Nb into a molten Al bath, granular NbAl3 was precipitated and improved the coherency of the film to the substrate. Amorphous Al2O3 was formed by anodic oxidation of the Al layer and crystallized to corrosion resistant α-Al2O3 by the subsequent heat treatment. The Nb substrate after this combined treatment did not form any niobium oxides even after heating in air for 64.8 ks at 1073 K, and the oxygen increment in the Nb bulk was suppressed below 400 mass ppm.</abstract><cop>Sendai</cop><pub>The Japan Institute of Metals and Materials</pub><doi>10.2320/jinstmet1952.59.9_967</doi><tpages>6</tpages><oa>free_for_read</oa></addata></record> |
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subjects | alumina coating aluminum film anodic oxidation hot dipping NbAl3 niobium oxidation resistance |
title | Oxidation Resistant Coating for Niobium by Combining Hot Dipping in Molten Aluminum Coating and Anodic Oxidation |
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