Size-Dependent Effects in Low-Temperature Sintering and Alloying of Nanopowders

Sintering of nanosized powder mixtures occurs at relatively low temperatures and is accompanied by interdiffusion between the powders and low-temperature homogenization or formation of new phases. The kinetics of interdiffusion depends on the grain size of the structure being formed in the powder co...

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Bibliographic Details
Published in:Powder metallurgy and metal ceramics 2018-11, Vol.57 (7-8), p.421-430
Main Authors: Kaganovskii, Yu.S., Paritskaya, L.N.
Format: Article
Language:English
Subjects:
Alloying effects
Ceramics
Characterization and Evaluation of Materials
Chemistry and Materials Science
Composites
Glass
Grain boundaries
Homogenization
Interdiffusion
Intermetallic compounds
Low temperature
Materials Science
Metallic Materials
Natural Materials
Powder compacts
Sintering
Sintering (powder metallurgy)
Size effects
Temperature dependence
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Summary:Sintering of nanosized powder mixtures occurs at relatively low temperatures and is accompanied by interdiffusion between the powders and low-temperature homogenization or formation of new phases. The kinetics of interdiffusion depends on the grain size of the structure being formed in the powder compacts. We consider size effects of interdiffusion during sintering at sufficiently low temperatures when bulk diffusion is completely frozen and homogenization or formation of other phases occurs due to diffusion-induced motion of grain boundaries. These effects take place both in the mixtures of mutually soluble powder materials and materials that form intermetallic compounds. We analyze mainly the results obtained as development of the studies that were initiated by Professor Yakov Yevseevich Geguzin.
ISSN:1068-1302
1573-9066
DOI:10.1007/s11106-018-0001-2