Retardation of grain boundary reactions in Ag-Pd-Cu alloys by additions of small amounts of other elements
Identifieur interne : 000409 ( Main/Exploration ); précédent : 000408; suivant : 000410Retardation of grain boundary reactions in Ag-Pd-Cu alloys by additions of small amounts of other elements
Auteurs : RBID : ISTEX:10853_1990_Article_BF00576796.pdfAbstract
The grain-boundary reactions in Ag-25 mass% Pd-10 mass% Cu alloys with 1 mass% aluminium, cobalt, tin, chromium or indium, were investigated by optical microscopy, electrical resistivity, and hardness tests. Addition of tin and chromium retarded grain-boundary reactions. The growth rate of nodules with tin addition was 1/18 of the alloy without additons. Grain-interior reactions are accelerated with chromium, tin and indium addition, with chromium the most effective. The activation energies for the grain-interior and grain-boundary reactions are 192 to 196 and 144 to 208 kJ mol−1, respectively. Additions retard the growth but not the nucleation at the grain boundary. It is concluded that elements which form stable precipitates in the grains retard the grain-boundary reaction.
DOI: 10.1007/BF00576796
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Addition of tin and chromium retarded grain-boundary reactions. The growth rate of nodules with tin addition was 1/18 of the alloy without additons. Grain-interior reactions are accelerated with chromium, tin and indium addition, with chromium the most effective. The activation energies for the grain-interior and grain-boundary reactions are 192 to 196 and 144 to 208 kJ mol−1, respectively. Additions retard the growth but not the nucleation at the grain boundary. It is concluded that elements which form stable precipitates in the grains retard the grain-boundary reaction.</div></front></TEI><mods xsi:schemaLocation="http://www.loc.gov/mods/v3 file:///applis/istex/home/loadistex/home/etc/xsd/mods.xsd" version="3.4" istexId="c7e733df197751b334880acae8d3bdcae87be60f"><titleInfo lang="eng"><title>Retardation of grain boundary reactions in Ag-Pd-Cu alloys by additions of small amounts of other elements</title></titleInfo><name type="personal"><namePart type="given">Isao</namePart><namePart type="family">Kawashima</namePart><role><roleTerm type="text">author</roleTerm></role><affiliation>Department of Dental Materials Science, School of Dentistry, Higashi-Nippon-Gakuen University, Ishikari-Tobetsu, Hokkaido, Japan</affiliation></name><name type="personal"><namePart type="given">Yoshima</namePart><namePart type="family">Araki</namePart><role><roleTerm type="text">author</roleTerm></role><affiliation>Department of Dental Materials Science, School of Dentistry, Higashi-Nippon-Gakuen University, Ishikari-Tobetsu, Hokkaido, Japan</affiliation></name><name type="personal"><namePart type="given">Hiroki</namePart><namePart type="family">Ohno</namePart><role><roleTerm type="text">author</roleTerm></role><affiliation>Department of Dental Materials Science, School of Dentistry, Higashi-Nippon-Gakuen University, Ishikari-Tobetsu, Hokkaido, Japan</affiliation></name><typeOfResource>text</typeOfResource><genre>Papers</genre><genre>Original Paper</genre><originInfo><publisher>Kluwer Academic Publishers, Dordrecht</publisher><dateCreated encoding="w3cdtf">1990-02-26</dateCreated><dateCaptured encoding="w3cdtf">1990-03-09</dateCaptured><dateValid encoding="w3cdtf">2004-10-19</dateValid><copyrightDate encoding="w3cdtf">1990</copyrightDate></originInfo><language><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType></physicalDescription><abstract lang="eng">The grain-boundary reactions in Ag-25 mass% Pd-10 mass% Cu alloys with 1 mass% aluminium, cobalt, tin, chromium or indium, were investigated by optical microscopy, electrical resistivity, and hardness tests. Addition of tin and chromium retarded grain-boundary reactions. The growth rate of nodules with tin addition was 1/18 of the alloy without additons. Grain-interior reactions are accelerated with chromium, tin and indium addition, with chromium the most effective. The activation energies for the grain-interior and grain-boundary reactions are 192 to 196 and 144 to 208 kJ mol−1, respectively. Additions retard the growth but not the nucleation at the grain boundary. It is concluded that elements which form stable precipitates in the grains retard the grain-boundary reaction.</abstract><relatedItem type="series"><titleInfo type="abbreviated"><title>J Mater Sci</title></titleInfo><titleInfo><title>Journal of Materials Science</title><partNumber>Year: 1990</partNumber><partNumber>Volume: 26</partNumber><partNumber>Number: 4</partNumber></titleInfo><genre>Archive Journal</genre><originInfo><dateIssued encoding="w3cdtf">1991-01-01</dateIssued><copyrightDate encoding="w3cdtf">1991</copyrightDate></originInfo><subject usage="primary"><topic>Chemistry</topic><topic>Polymer Sciences</topic><topic>Industrial Chemistry/Chemical Engineering</topic><topic>Characterization and Evaluation Materials</topic><topic>Mechanics</topic></subject><identifier type="issn">0022-2461</identifier><identifier type="issn">Electronic: 1573-4803</identifier><identifier type="matrixNumber">10853</identifier><identifier type="local">IssueArticleCount: 41</identifier><recordInfo><recordOrigin>Chapman and Hall Ltd, 1991</recordOrigin></recordInfo></relatedItem><identifier type="doi">10.1007/BF00576796</identifier><identifier type="matrixNumber">Art38</identifier><identifier type="local">BF00576796</identifier><accessCondition type="use and reproduction">MetadataGrant: OpenAccess</accessCondition><accessCondition type="use and reproduction">AbstractGrant: OpenAccess</accessCondition><accessCondition type="restriction on access">BodyPDFGrant: Restricted</accessCondition><accessCondition type="restriction on access">BodyHTMLGrant: Restricted</accessCondition><accessCondition type="restriction on access">BibliographyGrant: Restricted</accessCondition><accessCondition type="restriction on access">ESMGrant: Restricted</accessCondition><part><extent unit="pages"><start>1113</start><end>1118</end></extent></part><recordInfo><recordOrigin>Chapman and Hall Ltd, 1990</recordOrigin><recordIdentifier>10853_1990_Article_BF00576796.pdf</recordIdentifier></recordInfo></mods></record>Pour manipuler ce document sous Unix (Dilib)
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