Effect of Temperature on the Shrinkage Rate of Compacts Composed of Nanoparticles

Autor:	Yu. N. Stepanov, E. I. Evstratov, Michail I. Alymov
Rok vydání:	2005
Předmět:	Materials science Melting temperature Metallurgy Analytical chemistry Nanoparticle chemistry.chemical_element Sintering Shrinkage rate Condensed Matter Physics Copper Nickel chemistry Materials Chemistry Ceramics and Composites Porosity Shrinkage
Zdroj:	Glass Physics and Chemistry. 31:337-339
ISSN:	1608-313X 1087-6596
Popis:	An expression describing the shrinkage rate of compacts composed of nanoparticles is obtained under the assumption that nanoparticles undergo fluctuation melting. The expression derived has the following form: dY/dt = Aexp(−(TM + q)/T), where dY/dt is the shrinkage rate; TM is the melting temperature of nanoparticles; T is the sintering temperature; and A and q are constants that depend on the material, the initial porosity, and the size of nanoparticles in the compact. The experimental data on the shrinkage rate of compacts composed of copper and nickel nanoparticles 70 nm in size are compared with the shrinkage rates calculated according to the derived expression. This comparison shows that the experimentally measured shrinkage rates are close to the calculated values.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6213c30fcc3db29594574061fd10db26 https://doi.org/10.1007/s10720-005-0065-1 Zobrazit plný text záznamu Full text from SpringerLink