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Mechanisms and kinetics of nitridation in silicon powder compacts
Luleå tekniska universitet.
1995 (English)In: Ceramic materials and components for engines: 5th International symposium : Selected papers. / [ed] D.S. Yan; Xiren Fu; S.X. Shi, World Scientific Publishing Co Pte Ltd , 1995, 189-193 p.Conference paper (Refereed)
Abstract [en]

Due to the strongly exothermic nature of silicon nitridation, a clear understanding of the nitridation process and an effective control regime, especially when the nitridation involves a rather large mass of silicon are of commercial interest. The nitridation process was investigated by reacting "large masses" of silicon powder compacts (about 1.5 kg) in a nitriding atmosphere in which some auxiliary gases such as Ar or He were added. Because of the exothermic heat, the reaction kinetics were found to be influenced by the amount of silicon in the nitridation cycle. The effect of the additional gases (Ar and He) is enhanced as the mass of silicon loaded in the furnace increases. The kinetics and the corresponding mechanisms of the whole nitridation cycle are discussed and a mechanism for the second reaction maximum is proposed. 22 refs.

Place, publisher, year, edition, pages
World Scientific Publishing Co Pte Ltd , 1995. 189-193 p.
Research subject
Engineering Materials
URN: urn:nbn:se:ltu:diva-37334Local ID: b51caa00-b562-11dd-a6f7-000ea68e967bISBN: 9810219059 (print)OAI: diva2:1010832
Ceramic materials and components for engines : 29/05/1994 - 01/06/1994
Godkänd; 1995; 20081118 (andbra)Available from: 2016-10-03 Created: 2016-10-03Bibliographically approved

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