Email this article Activation Energy and Mechanism of the Molybdenum Disilicide Sintering Process
- Authors: Titov D.D.1, Kargin Y.F.1, Lysenkov A.S.1, Miloserdov P.A.2, Perevislov S.N.3, Petrakova N.V.1, Antonova O.S.1, Konovalov A.A.1, Ashmarin A.A.1, Shokod’ko A.V.1
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Affiliations:
- Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
- Merzhanov Institute of Structural Macrokinetics and Materials Science, Russian Academy of Sciences
- St. Petersburg State Technological Institute (Technical University)
- Issue: Vol 54, No 11 (2018)
- Pages: 1113-1118
- Section: Article
- URL: https://journals.rcsi.science/0020-1685/article/view/158554
- DOI: https://doi.org/10.1134/S0020168518110134
- ID: 158554
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Abstract
This paper presents dilatometric analysis data for the sintering of off-the-shelf molybdenum disilicide (MoSi2) powder prepared by magnesiothermic synthesis. We have obtained continuous shrinkage curves for MoSi2 powder compacts with an initial relative density of 70% at different heating rates: 5, 10, 20, and 30°C/min. From a quantitative analysis of densification curves for the compacts, the activation energy for the initial stage of sintering has been determined to be Q = 695 kJ/mol. It has been shown that the dominant process in the initial stage of MoSi2 powder sintering is volume diffusion from grain boundaries and surfaces.
About the authors
D. D. Titov
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
Author for correspondence.
Email: mitytitov@gmail.com
Russian Federation, Leninskii pr. 49, Moscow, 119334
Yu. F. Kargin
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
Email: mitytitov@gmail.com
Russian Federation, Leninskii pr. 49, Moscow, 119334
A. S. Lysenkov
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
Email: mitytitov@gmail.com
Russian Federation, Leninskii pr. 49, Moscow, 119334
P. A. Miloserdov
Merzhanov Institute of Structural Macrokinetics and Materials Science, Russian Academy of Sciences
Email: mitytitov@gmail.com
Russian Federation, ul. Akademika Osip’yana 8, Chernogolovka, Moscow oblast, 142432
S. N. Perevislov
St. Petersburg State Technological Institute (Technical University)
Email: mitytitov@gmail.com
Russian Federation, Moskovskii pr. 24–26/49, St. Petersburg, 190013
N. V. Petrakova
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
Email: mitytitov@gmail.com
Russian Federation, Leninskii pr. 49, Moscow, 119334
O. S. Antonova
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
Email: mitytitov@gmail.com
Russian Federation, Leninskii pr. 49, Moscow, 119334
A. A. Konovalov
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
Email: mitytitov@gmail.com
Russian Federation, Leninskii pr. 49, Moscow, 119334
A. A. Ashmarin
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
Email: mitytitov@gmail.com
Russian Federation, Leninskii pr. 49, Moscow, 119334
A. V. Shokod’ko
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
Email: mitytitov@gmail.com
Russian Federation, Leninskii pr. 49, Moscow, 119334
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