{"?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-K93MU8BS/f6ad09ec-e25b-47cb-a289-e99031f25ae5/HTML","dcterms:extent":"22 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-K93MU8BS/81879a59-66f5-4772-bbc7-5fa6b9c7c1f1/PDF","dcterms:extent":"179 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-K93MU8BS/4db3dfca-d7b0-495a-b8d4-084a4a82d18c/TEXT","dcterms:extent":"21 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-K93MU8BS","dcterms:isPartOf":[{"@rdf:resource":"https://www.dlib.si/details/urn:nbn:si:spr-ihg6vo21"},{"@xml:lang":"sl","#text":"Materiali in tehnologije"}],"dcterms:issued":"2001","dc:creator":["Maček, Jadran","Marinšek, Marjan"],"dc:format":[{"@xml:lang":"sl","#text":"letnik:35"},{"@xml:lang":"sl","#text":"številka:5"},{"@xml:lang":"sl","#text":"5 strani"},{"@xml:lang":"sl","#text":"str. 237-241"}],"dc:identifier":["ISSN:1580-2949","COBISSID:334943","URN:URN:NBN:SI:doc-K93MU8BS"],"dc:language":"sl","dc:publisher":{"@xml:lang":"sl","#text":"Inštitut za kovinske materiale in tehnologije"},"dc:subject":[{"@xml:lang":"sl","#text":"cirkonij"},{"@xml:lang":"sl","#text":"itrij"},{"@xml:lang":"sl","#text":"kompoziti"},{"@xml:lang":"sl","#text":"nikelj"},{"@xml:lang":"sl","#text":"pH reakcijske zmesi"},{"@xml:lang":"sl","#text":"reakcijska zmes"},{"@xml:lang":"sl","#text":"velikost delcev"},{"@xml:lang":"en","#text":"zirconium"},{"@rdf:resource":"http://www.wikidata.org/entity/Q941"}],"dcterms:temporal":{"@rdf:resource":"2000-2024"},"dc:title":{"@xml:lang":"sl","#text":"Priprava kompozitov Ni-YSZ z uporabo gel-precipitacijske metode: vpliv reakcijskih pogojev na morfološke lastnosti svežih gel-precipitatov ter kemijsko sestavo končnih kompozitov Ni-YSZ| Preparation of Ni-YSZ composites by the gel-precipitation method: morphological characteristics of intermediates and chemical composition of Ni-YSZ composites|"},"dc:description":[{"@xml:lang":"sl","#text":"Ni-YSZ composite materials were prepared by the gel-precipitation method according to the preliminary results on separate zirconia, yttria and nickel hydroxide reaction systems. The average size of the agglomerate in the suspension diminishes with the increasing final pH value as a consequence of the agglomerate surface stabilization. In contrast, an increase in the initial Ni$^2+$:Zr$^4+$ molar ratio favors smaller agglomerate sizes. Similar behavior was observed in methanol and aqueous media. Methanol has a lower dielectric constant and dipole moment than water, therefore the mutual influence of charged particles in the suspension is greater in the methanol. The highest nickel content in the final composite was obtained when the gel-precipitation was carried out up to a final pH value of 8. Below that value the precipitation of nickel hydroxide is in complete, while above a pH value of 8 the already-precipitated nickel hydroxide dissolves again in the excess of ammonia forming a violet soluble complex"},{"@xml:lang":"sl","#text":"Kompozitne materiale Ni-YSZ smo pripravili po gel-precipitacijski metodi na osnovi preliminarnih poskusov priprave čistih cirkonijevih, itrijevih in nikljevih gelov. Povprečna velikost aglomeratov v suspenziji z višanjem končne pH-vrednosti suspenzije in temperaturo pada kot posledica stabilizacije površine aglomeratov z oddaljevanjem od izoelektrične točke in višanja dinamike polimerizacijskih reakcij. Zviševanje začetnega ionskega razmerja Ni$^2+$:Zr$^4+$ vodi do zmanjševanja velikosti nastalih aglomeratov. Omenjene odvisnosti veljajo tako za vodni kot za metanolni medij, vendar je vpliv med posameznimi nabitimi delci v metanolnem mediju, kot mediju z manjšo dielektrično konstanto in manjšim dipolnim momentom, večji. Maksimalno množino niklja v končnem kompozitu pripravimo iz reakcijske suspenzije s pH vrednostjo 8. Pod to vrednostjo je obarjanje nikljevega hidroksida nepopolno, nad pH 8 pa se nikljev hidroksid v amoniaku raztaplja"}],"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-K93MU8BS","edm:aggregatedCHO":{"@rdf:resource":"URN:NBN:SI:DOC-K93MU8BS"},"edm:isShownBy":{"@rdf:resource":"http://www.dlib.si/stream/URN:NBN:SI:DOC-K93MU8BS/81879a59-66f5-4772-bbc7-5fa6b9c7c1f1/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-K93MU8BS/maxi/edm"},"edm:isShownAt":{"@rdf:resource":"http://www.dlib.si/details/URN:NBN:SI:DOC-K93MU8BS"}}}}