Reduction Annealing Synthesis of Nanostructured Carbide and Nitride Particulate Composites
2014 (English)Licentiate thesis, comprehensive summary (Other academic)
This thesis covers reduction-annealing synthesis of nanostructured SiC-TiCN and SiC-TiC particulate composite powders. These were characterized by X-ray diffraction and electron microscopy. In the SiC-TiC powder it was found that TiC could be added in certain amounts by reducing controlled amounts of titanium chloride source followed by a suitable annealing. A transmission electron microscopy showed that TiC formed polyhedrons and SiC formed rods. This was in agreement with a trend towards these crystal shapes, regardless of synthesis method, as found in the literature. In the SiC-TiCN particulate powder, nitration was achieved at low nitrogen concentration. In a scanning electron microscopy study it was seen that SiC formed elongated crystals, while TiCN formed polyhedrons. A gradual nitration of TiC into TiCN was proposed. Nitration was promoted by a high reactivity of TiC and an integrated nitrogen surplus over titanium and carbon amount during annealing.
Place, publisher, year, edition, pages
Luleå: Luleå tekniska universitet, 2014.
Licentiate thesis / Luleå University of Technology, ISSN 1402-1757
Other Materials Engineering
Research subject Engineering Materials
IdentifiersURN: urn:nbn:se:ltu:diva-17446Local ID: 36d8a3a3-3043-435f-a58c-dbc365fa74e9ISBN: 978-91-7583-033-9 (print)ISBN: 978-91-7583-034-6 (electronic)OAI: oai:DiVA.org:ltu-17446DiVA: diva2:990451
Godkänd; 2014; 20141016 (andbra); Nedanstående person kommer att hålla licentiatseminarium för avläggande av teknologie licentiatexamen. Namn: Andreas Engström Ämne: Materialteknik/Engineering Materials Uppsats: Reduction Annealing Synthesis of Nanostructured Carbide and Nitride Particulate Composites Examinator: Biträdande professor Marta-Lena Antti, Institutionen för teknikvetenskap och matematik, Luleå tekniska universitet Diskutant: Biträdande professor Caisa Samuelsson, Institutionen för samhällsbyggnad och naturresurser, Luleå tekniska universitet Tid: Fredag den 14 november 2014 kl 13:00 Plats: E246, Luleå tekniska universitet2016-09-292016-09-29Bibliographically approved