Abstract
The sintering of needle and spherical particles is considered in terms of a diffusionless sintering model based on the idea that the sintering of nanoparticles smaller than 70 nm is determined by their fluctuational melting. It has been shown that the temperature of the onset of sintering of needle particles is lower than that of spherical particles of the same mass. According to calculations performed for copper nanopowders, the temperature of the onset of sintering of needle particles is 6% lower than that of spherical particles of the same mass.
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Yu. N. Stepanov, M. I. Alymov, and E. I. Mal’tina, “Ultrafine Metallic Powders: Model for the Initial Stage of Sintering,” Izv. Ross. Akad. Nauk, Ser. Met., No. 1, 127–132 (1995).
Yu. N. Stepanov and M. I. Alymov, “Sintering Kinetics of Ultrafine Powders and New Approach to the Determination of the Critical Thickness of a Melted Liquid Layer,” Fiz. Khim. Obrab. Mater., No. 6, 106–113 (1996).
Yu. N. Stepanov, M. I. Alymov, and E. I. Evstratov, “Effect of the Temperature on the Shrinkage Rate of Materials Compacted from Nanoparticles,” Fiz. Khim. Stekla 31(3), 452–455 (2005).
Yu. N. Stepanov and M. I. Alymov, “Calculation of the Shrinkage Rate at the First Stage of Sintering of Compacts Made of Ultrafine Powders,” Fiz. Khim. Obrab. Mater., No. 6, 76–78 (2001).
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Original Russian Text © Yu.N. Stepanov, M.I. Alymov, 2006, published in Metally, 2006, No. 6, pp. 22–24.
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Stepanov, Y.N., Alymov, M.I. Effect of the nanoparticle shape on the temperature of the onset of powder sintering. Russ. Metall. 2006, 505–507 (2006). https://doi.org/10.1134/S0036029506060061
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DOI: https://doi.org/10.1134/S0036029506060061