Hot pressing and spark plasma sintering of alumina: Discussion about an analytical modelling used for sintering mechanism determination

SCRIPTA MATERIALIA

卷:84-85

Article

Guyot, P.¹  Antou, G.¹  Pradeilles, N.¹  Weibel, A.²  Vandenhende, M.¹  Chevallier, G.²  Peigney, A.²  Estournes, C.²  Maitre, A.¹ 

[1] Ctr Europeen Ceram, SPCTS, UMR CNRS 7315, F-87068 Limoges, France

[2] Inst Carnot CIRIMAT, UMR CNRS 5085, F-31062 Toulouse 09, France

关键词: Ceramics;    Spark plasma sintering;    Hot pressing;    Modelling;    Densification;   

DOI  :  10.1016/j.scriptamat.2014.04.013

来源: Elsevier

【 摘 要 】

The validity of the model for sintering under uniaxial pressure proposed by Bernard-Granger et al. has been investigated by studying the densification kinetics of a submicrometric alpha-alumina powder using hot pressing and spark plasma sintering devices. The identified key parameters of creep (i.e. stress exponent, apparent activation energy) seem to be unreliable, and do not in the end allow identification of the involved sintering mechanism. Possible biases of the approach are identified and discussed. (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

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