Initial-stage sintering kinetics of nanocrystalline tungsten

Srivastav, Ajeet K. ; Sankaranarayana, M. ; Murty, B. S. (2011) Initial-stage sintering kinetics of nanocrystalline tungsten Metallurgical and Materials Transactions A, 42 (13). pp. 3863-3866. ISSN 1073-5623

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Official URL: http://www.springerlink.com/content/k048j5u33h0680...

Related URL: http://dx.doi.org/10.1007/s11661-011-0975-6

Abstract

Initial-stage sintering kinetics of nanocrystalline tungsten has been studied in the temperature range of 1273-1473 K (1000-1200 °C). Nanocrystalline tungsten sinters initially through a grain boundary diffusion mechanism. The calculated activation energy was 388 ± 11 kJ/mol at low temperatures (1273-1373 K (1000-1100 °C)) and 409 ± 7 kJ/mol at high temperatures (1373-1473 K (1100-1200 °C)), which are close to the experimentally measured activation energy for grain boundary diffusion (385 kJ/mol).

Item Type:Article
Source:Copyright of this article belongs to The Minerals, Metals & Materials Society.
ID Code:73367
Deposited On:02 Dec 2011 08:10
Last Modified:02 Dec 2011 08:10

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