{"?xml":{"@version":"1.0"},"edm:RDF":{"@xmlns:dc":"http://purl.org/dc/elements/1.1/","@xmlns:edm":"http://www.europeana.eu/schemas/edm/","@xmlns:wgs84_pos":"http://www.w3.org/2003/01/geo/wgs84_pos","@xmlns:foaf":"http://xmlns.com/foaf/0.1/","@xmlns:rdaGr2":"http://rdvocab.info/ElementsGr2","@xmlns:oai":"http://www.openarchives.org/OAI/2.0/","@xmlns:owl":"http://www.w3.org/2002/07/owl#","@xmlns:rdf":"http://www.w3.org/1999/02/22-rdf-syntax-ns#","@xmlns:ore":"http://www.openarchives.org/ore/terms/","@xmlns:skos":"http://www.w3.org/2004/02/skos/core#","@xmlns:dcterms":"http://purl.org/dc/terms/","edm:WebResource":[{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:doc-38OIILL4/249395fc-6847-4511-8873-633b53dc96d7/HTML","dcterms:extent":"15 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:doc-38OIILL4/ac82e24d-e281-4689-9456-efb4819dac7b/PDF","dcterms:extent":"161 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:doc-38OIILL4/f6614794-54ed-4055-8cd8-45d20da39eb7/TEXT","dcterms:extent":"13 KB"}],"edm:TimeSpan":{"@rdf:about":"1992-1999","edm:begin":{"@xml:lang":"en","#text":"1992"},"edm:end":{"@xml:lang":"en","#text":"1999"}},"edm:ProvidedCHO":{"@rdf:about":"URN:NBN:SI:doc-38OIILL4","dcterms:isPartOf":[{"@rdf:resource":"https://www.dlib.si/details/URN:NBN:SI:spr-QKUCN2BD"},{"@xml:lang":"sl","#text":"Kovine zlitine tehnologije"}],"dcterms:issued":"1998","dc:creator":["Kobe, Spomenka","McGuiness, Paul J.","Žužek Rožman, Kristina"],"dc:format":[{"@xml:lang":"sl","#text":"letnik:32"},{"@xml:lang":"sl","#text":"številka:6"},{"@xml:lang":"sl","#text":"str. 515-518"}],"dc:identifier":["ISSN:1318-0010","COBISSID:93098","URN:URN:NBN:SI:doc-38OIILL4"],"dc:language":"en","dc:publisher":[{"@xml:lang":"sl","#text":"Inštitut za kovinske materiale in tehnologije"},{"@xml:lang":"sl","#text":"Železarna Jesenice"},{"@xml:lang":"sl","#text":"Železarna Ravne"},{"@xml:lang":"sl","#text":"Železarna Štore"}],"dc:subject":[{"@xml:lang":"en","#text":"Kbk wz. 1988 Tantal"},{"@xml:lang":"sl","#text":"koercitivnost"},{"@xml:lang":"sl","#text":"magneti"},{"@xml:lang":"sl","#text":"magnetne lastnosti"},{"@xml:lang":"sl","#text":"mikrostruktura"},{"@xml:lang":"sl","#text":"samarij"},{"@xml:lang":"sl","#text":"tantal"},{"@xml:lang":"sl","#text":"zlitine"},{"@xml:lang":"sl","#text":"železo"},{"@rdf:resource":"http://www.wikidata.org/entity/Q677"}],"dcterms:temporal":{"@rdf:resource":"1992-1999"},"dc:title":{"@xml:lang":"sl","#text":"High coercivities in HDDR processed Sm-Fe-Ta-N magnets| Visoke koercitivnosti Sm-Fe-Ta-N magnetov dobljenih po HDDR postopku|"},"dc:description":[{"@xml:lang":"sl","#text":"An alloy of composition ?$Sm_{13,8}Fe_{82,2}Ta_{4,0}$? was compared with a conventional ?$Sm_{13,7}Fe_{86,3}$? material in order to assess its potential as a permanent magnet mataerial. The optimum conditions necessary to provide the highest coercivities using the HDDR process and for the HDDR process combined with milling were investigated. The coercitivities obtained after using the HDDR process and subsequent nitriding were 676,6 kA/m for the ?$Sm_{13,8}Fe_{82,2}Ta_{4,0}N_x$? and 358,2 kA/m for the ?$Sm_{13,8}Fe_{86,3}N_x$? samples. Coercivities of 1003,0 kA/m for ?$Sm_{13,8}Fe_{86,3}N_x$? and 1273,6 kA/m ?$Sm_{13,8}Fe_{82,2Ta_{4,0}N_x$? were achieved by reducing the paraticle size with milling prior to the HDDR process. Magnetic results were comparedwith the phase composition, determined using scanning electron microscopy (SEM) and X-ray diffraction (XRD). The better coercivities obtained with the Ta containing sample were found to be due to the presence of a much smaller amount of ?$\\alpha$?Fe, a soft magnetic phase, with the ?$TaFe_2$? phase forming in its place. The milling prior to the HDDR treatment improves the magnetic properties because of the small particle size which prevents the grains growing too laarge, with their consequent very negative effect on the coercivity"},{"@xml:lang":"sl","#text":"Primerjali smo zlitino sestave ?$Sm_{13,8}Fe_{82,2}Ta_{4,0}$? z že poznano zlitino sestave ?$Sm_{13,7}Fe_{86,3}$?. Želeli smo ovrednotiti potencial zlitine, z dodatko Ta, z vidika permanentnega magnetnega materiala. Poiskali smo optimalne pogoje postopka HDDR, ki so nam dali najboljše rezultate na področju magnetnih lastnosti. Koercitivnosti prahov dobljenih po tem postopku in nadaljnem nitriranju, so 676,6 kA/m za ?$Sm_{13,8}Fe_{82,2}Ta_{4,0}N_x$? in 358,2 kA/m za ?$Sm_{13,8}Fe_{86,3}N_x$?. Višje koercitivnosti 1003,0 kA/m za ?$Sm_{13,8}Fe_{86,3}N_x$? in 1273,6 kA/m za ?$Sm_{13,8}Fe_{82,2Ta_{4,0}N_x$? pa smo dosegli z mletjem materiala pred HDDR postopkom. Rezultate magnetnih lastnosti smo primerjali tudi s fazno sestavo, ki smo jo določili z elektronsko vrstično mikroskopijo (SEM) in rentgensko difrakcijo (XRD). Razliko v viški koercitivnosti sestavae s Ta gre pripisati manjši vsebnosti ?$\\alpha$?Fe, ki kot mehkomagnetna faza znižuje magnetne lastnosti. ?$\\alpha$?Fe s tantalom tvori ?$TaFe_2$? fazo, ki pa je paramaganetna in nima negativnega vpliva na magnetne lastnosti. Tudi predmletje materiala vpliva pozitivno na maagnetne lastnosti saj z zmanjšanjem velikosti delcev preprečimo grobo zrnatost, ki negativno vpliva na magnetne lastnosti"},{"@xml:lang":"sl","#text":"Nadaljuje se kot: Materiali in tehnologije"}],"edm:type":"TEXT","dc:type":[{"@xml:lang":"sl","#text":"znanstveno časopisje"},{"@xml:lang":"en","#text":"journals"},{"@rdf:resource":"http://www.wikidata.org/entity/Q361785"}]},"ore:Aggregation":{"@rdf:about":"http://www.dlib.si/?URN=URN:NBN:SI:doc-38OIILL4","edm:aggregatedCHO":{"@rdf:resource":"URN:NBN:SI:doc-38OIILL4"},"edm:isShownBy":{"@rdf:resource":"http://www.dlib.si/stream/URN:NBN:SI:doc-38OIILL4/ac82e24d-e281-4689-9456-efb4819dac7b/PDF"},"edm:rights":{"@rdf:resource":"http://rightsstatements.org/vocab/InC/1.0/"},"edm:provider":"Slovenian National E-content Aggregator","edm:intermediateProvider":{"@xml:lang":"en","#text":"National and University Library of Slovenia"},"edm:dataProvider":{"@xml:lang":"sl","#text":"Inštitut za kovinske materiale in tehnologije"},"edm:object":{"@rdf:resource":"http://www.dlib.si/streamdb/URN:NBN:SI:doc-38OIILL4/maxi/edm"},"edm:isShownAt":{"@rdf:resource":"http://www.dlib.si/details/URN:NBN:SI:doc-38OIILL4"}}}}