Work

Size dependence of the melting temperature and mechanisms of the coalescence/sintering on the nanoscale

Year: 2019

Type: conference-paper

Abstract: We have proposed to use the nanoparticle (NP) melting temperature Tm to distinguish between the coalescence and sintering processes on the nanoscale. According to our molecular dynamics results, obtained on Au NPs, the coalescence of nanoproplets may be interpreted as a hydrodynamic phenomenon on the nanoscale, and the characteristic coalescence time τ is a linear function of the initial particle radius r 0. In turn, the sintering of two crystalline NPs (T < Tm ) relates to a grain boundary formation as a result of an alignment of the crystallographic orientations of the sintering NPs, and in this case a dependence of τ on r 0 has not been revealed.

Source: Journal of Physics Conference Series

DOI: 10.1088/1742-6596/1352/1/012044

Authors: V M Samsonov, M I Alymov, I V Talyzin, S A Vasilyev

Institutions: Tver State University, Russian Academy of Sciences, Institute of Structural Macrokinetics and Materials Science

Language: English

Topic: nanoparticles nucleation surface interactions

Subfield: Physical and Theoretical Chemistry

Field: Chemistry

Domain: Physical Sciences

Open Access status: diamond

Funder: Ministry of Science and Higher Education of the Russian Federation

OpenAlex ID: W2988237757

FWCI: 2.96

Cites: 19

Cited by: 5

Related to: 10