Email this article Direct observation of the processes near particle-to-particle contacts at electric pulse consolidation of titanium powder
- Authors: Rogachev A.S.1, Vadchenko S.G.1, Kudryashov V.A.1, Shchukin A.S.1, Alymov M.I.1
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Affiliations:
- Merzhanov Institute of Structural Macrokinetics and Materials Science
- Issue: Vol 488, No 5 (2019)
- Pages: 504-507
- Section: Physical chemistry
- URL: https://journals.eco-vector.com/0869-5652/article/view/17788
- DOI: https://doi.org/10.31857/S0869-56524885504-507
- ID: 17788
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Abstract
Direct high-speed micro-video records prove the existence of highly overheated zones at the contacts of powder particles during short (~ 1 ms) electric current pulses. The value of overheating can exceed 1600 degrees and lead to the formation of liquid-phase sintering necks, the dimensions of which are well correlated with the size of the overheated zones. The micro-uniformity of the temperature field in the electric pulse heating allow understanding the unusually high consolidation rates of powder materials observed in spark plasma sintering.
About the authors
A. S. Rogachev
Merzhanov Institute of Structural Macrokinetics and Materials Science
Author for correspondence.
Email: rogachev@ism.ac.ru
Russian Federation, 142432, Moscow Region, Chernogolovka, Academician Osypian street, 8
S. G. Vadchenko
Merzhanov Institute of Structural Macrokinetics and Materials Science
Email: rogachev@ism.ac.ru
Russian Federation, 142432, Moscow Region, Chernogolovka, Academician Osypian street, 8
V. A. Kudryashov
Merzhanov Institute of Structural Macrokinetics and Materials Science
Email: rogachev@ism.ac.ru
Russian Federation, 142432, Moscow Region, Chernogolovka, Academician Osypian street, 8
A. S. Shchukin
Merzhanov Institute of Structural Macrokinetics and Materials Science
Email: rogachev@ism.ac.ru
Russian Federation, 142432, Moscow Region, Chernogolovka, Academician Osypian street, 8
M. I. Alymov
Merzhanov Institute of Structural Macrokinetics and Materials Science
Email: rogachev@ism.ac.ru
Corresponding Member of the Russian Academy of Sciences
Russian Federation, 142432, Moscow Region, Chernogolovka, Academician Osypian street, 8References
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