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Microwave assisted combustion synthesis of nanocrystalline yttria and its powder characteristics
University of Concepción.
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Industriell miljö- och processteknik.ORCID-id: 0000-0003-4582-0902
University of Concepción.
Vise andre og tillknytning
2009 (engelsk)Inngår i: Powder Technology, ISSN 0032-5910, E-ISSN 1873-328X, Vol. 191, nr 3, s. 309-314Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Microwave assisted combustion synthesis is used for fast and controlled processing of advanced ceramics. Single phase and sinter active nanocrystalline cubic yttria powders were successfully synthesized by microwave assisted combustion using the organic fuels urea, citric acid and glycine as reducing agents. The precursor powders were investigated by thermogravimetry (TG) and differential scanning colorimetry (DSC) analyses. The as-prepared precursors and the resulting oxide powders calcined at 1100 °C in oxygen atmosphere were characterized for their structure, particle size and morphology. The thermal analyses (TG/DSC), X-ray diffraction (XRD) and Fourier transform infra red (FT-IR) results demonstrate the effectiveness of the microwave assisted combustion synthesis. The scanning electron microscopy (SEM) observations show the different morphologies of as-prepared powders and transmission electron microscopy (TEM) shows the particle sizes in the range of 30-100 nm for calcined powders for different fuels. The results confirm that the homogeneous, nano scale yttria powders derived by microwave assisted combustion have high crystalline quality and the morphology of the as-prepared precursor powders depends on the nature of organic fuel used.

sted, utgiver, år, opplag, sider
2009. Vol. 191, nr 3, s. 309-314
HSV kategori
Forskningsprogram
Kemisk teknologi; Materialteknik
Identifikatorer
URN: urn:nbn:se:ltu:diva-9777DOI: 10.1016/j.powtec.2008.10.019ISI: 000264689900012Scopus ID: 2-s2.0-60849121705Lokal ID: 8758e140-e246-11dd-981b-000ea68e967bOAI: oai:DiVA.org:ltu-9777DiVA, id: diva2:982715
Merknad
Validerad; 2009; 20090114 (ysko)Tilgjengelig fra: 2016-09-29 Laget: 2016-09-29 Sist oppdatert: 2020-01-31bibliografisk kontrollert

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