{"?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-VCTYPGFB/8f0d4cfd-87c0-4336-932d-0c3538c9d259/HTML","dcterms:extent":"50 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-VCTYPGFB/75c1e066-2446-471f-8ef8-6ab70c4b6776/PDF","dcterms:extent":"957 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-VCTYPGFB/78f99641-e59f-440d-8d1f-632c0107ecbe/TEXT","dcterms:extent":"37 KB"}],"edm:TimeSpan":{"@rdf:about":"2000-2024","edm:begin":{"@xml:lang":"en","#text":"2000"},"edm:end":{"@xml:lang":"en","#text":"2024"}},"edm:ProvidedCHO":{"@rdf:about":"URN:NBN:SI:DOC-VCTYPGFB","dcterms:isPartOf":[{"@rdf:resource":"https://www.dlib.si/details/urn:nbn:si:spr-ihg6vo21"},{"@xml:lang":"sl","#text":"Materiali in tehnologije"}],"dcterms:issued":"2010","dc:creator":["Jenko, Monika","Kevorkijan, Varužan","Paulin, Irena","Škapin, Srečo D.","Šuštaršič, Borivoj"],"dc:format":[{"@xml:lang":"sl","#text":"letnik:44"},{"@xml:lang":"sl","#text":"številka:6"},{"@xml:lang":"sl","#text":"str. 363-371"}],"dc:identifier":["ISSN:1580-2949","COBISSID:840618","URN:URN:NBN:SI:doc-VCTYPGFB"],"dc:language":"en","dc:publisher":{"@xml:lang":"sl","#text":"Inštitut za kovinske materiale in tehnologije"},"dc:subject":[{"@xml:lang":"sl","#text":"aluminijske pene"},{"@xml:lang":"sl","#text":"dolomit"},{"@xml:lang":"sl","#text":"mehanske lastnosti"},{"@xml:lang":"sl","#text":"mikrostruktura"},{"@xml:lang":"sl","#text":"poroznost"},{"@xml:lang":"sl","#text":"praškovna metalurgija"},{"@rdf:resource":"http://www.wikidata.org/entity/Q167741"}],"dcterms:temporal":{"@rdf:resource":"2000-2024"},"dc:title":{"@xml:lang":"sl","#text":"Synthesis and characterisation of closed cells aluminium foams containing dolomite powder as foaming agent| Priprava in karakterizacija aluminijskih pen z zaprto poroznostjo, izdelanih z dolomitnim prahom kot sredstvom za penjenje|"},"dc:description":[{"@xml:lang":"sl","#text":"In this work, the viability of dolomite powder as cost-effective alternative to TiHsub2 foaming agent was investigated. Closed cells aluminium foam samples were prepared starts from solid, foamable precursors synthesized by powder metallurgy and melt route. Precursors obtained by melt route were machined and additional cold isostatic pressed in order to improve their density. In allcases, the resulted precursors consisted of an aluminium matrix containing various mass fractions of uniformly dispersed dolomite powders of various average particle size and 5 % of SiC particulates. Precursors were foamed by inserting into a cylindrical stainless steel mould and placing inside a pre-heated batch furnace at 700 °C for 10 min. The quality of foamable precursors was evaluated by determining their initial density and the foaming efficiency. On the other side, the quality of the obtained foams were characterised by their density, microstructure and mechanical properties. Experimental findings confirmed that aluminium foams synthesized with dolomite powder as blowing agent can be prepared by both powder metallurgy and melt route, as well as that the density, microstructure, compression strength,and energy absorption capacity are quite comparable with corresponding counterparts foamed by TiHsub2"},{"@xml:lang":"sl","#text":"V delu preučujemo možnost nadomeščanja TiHspodaj2 kot sredstva za penjenje z dolomitnim prahom. Vzorce aluminijske pene smo pripravili s prekurzorji, izdelanimi po postopku metalurgije prahov in po livarskem postopku. Prekurzorje, izdelane po livarskem postopku, smo tudi strojno obdelali in nato še hladno izostatsko stisnili, da smo povečali njihovo gostoto. Ne glede na postopek njihove izdelave, so dobljeni prekurzorji vsebovali aluminijsko matriko in v njej različne koncentracije enakomerno porazdeljenih delcev dolomita ter SiC-delcev različnih povprečnih velikosti. Pene smo v nadaljevanju izdelovali tako, da smo prekurzor zaprli v za ta namen izdelan jekleni model, ki smo ga nato za 10 min vstavljali v peč, ogreto na 700 °C. Kakovost prekurzorjev za penjenje smo ugotavljali na osnovi njihove gostote in učinkovitosti penjenje. Po drugi strani smo kakovost izdelanih pen določali na osnovi njihove gostote, mikrostrukture in mehanskih lastnosti. Eksperimentalne ugotovitve so potrdile, da je aluminijske pene mogoče izdelovati z dolomitnim prahom kot sredstvom za penjenje, tako po postopku prašne metalurgije kakor tudi po livarskem postopku in tako, da so njihova gostota, mikrostruktura, tlačna trdnost in sposobnost absorpcije energije povsem primerljive z vrednostmi, ki jih navaja literatura za Al-pene, izdelane s TiHspodaj2-penilom"}],"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-VCTYPGFB","edm:aggregatedCHO":{"@rdf:resource":"URN:NBN:SI:DOC-VCTYPGFB"},"edm:isShownBy":{"@rdf:resource":"http://www.dlib.si/stream/URN:NBN:SI:DOC-VCTYPGFB/75c1e066-2446-471f-8ef8-6ab70c4b6776/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-VCTYPGFB/maxi/edm"},"edm:isShownAt":{"@rdf:resource":"http://www.dlib.si/details/URN:NBN:SI:DOC-VCTYPGFB"}}}}