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Interface topology for distinguishing stages of sintering

Sintering is a common process during which nanoparticles and microparticles are bonded, leading to the shrinkage of interstitial pore space. Understanding morphological evolution during sintering is a challenge, because pore structures are elusive and very complex. A topological model of sintering i...

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Autores principales: Okuma, Gaku, Kadowaki, Daiki, Hondo, Tsuyoshi, Tanaka, Satoshi, Wakai, Fumihiro
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5593873/
https://www.ncbi.nlm.nih.gov/pubmed/28894247
http://dx.doi.org/10.1038/s41598-017-11667-2
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author Okuma, Gaku
Kadowaki, Daiki
Hondo, Tsuyoshi
Tanaka, Satoshi
Wakai, Fumihiro
author_facet Okuma, Gaku
Kadowaki, Daiki
Hondo, Tsuyoshi
Tanaka, Satoshi
Wakai, Fumihiro
author_sort Okuma, Gaku
collection PubMed
description Sintering is a common process during which nanoparticles and microparticles are bonded, leading to the shrinkage of interstitial pore space. Understanding morphological evolution during sintering is a challenge, because pore structures are elusive and very complex. A topological model of sintering is presented here, providing insight for understanding 3-D microstructures observed by X-ray microtomography. We find that the topological evolution is described by Euler characteristics as a function of relative density. The result is general, and applicable not only to viscous sintering of glasses but also to sintering of crystalline particles. It provides criteria to distinguish the stages of sintering, and the foundations to identify the range of applicability of the methods for determining the thermodynamic driving force of sintering.
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spelling pubmed-55938732017-09-13 Interface topology for distinguishing stages of sintering Okuma, Gaku Kadowaki, Daiki Hondo, Tsuyoshi Tanaka, Satoshi Wakai, Fumihiro Sci Rep Article Sintering is a common process during which nanoparticles and microparticles are bonded, leading to the shrinkage of interstitial pore space. Understanding morphological evolution during sintering is a challenge, because pore structures are elusive and very complex. A topological model of sintering is presented here, providing insight for understanding 3-D microstructures observed by X-ray microtomography. We find that the topological evolution is described by Euler characteristics as a function of relative density. The result is general, and applicable not only to viscous sintering of glasses but also to sintering of crystalline particles. It provides criteria to distinguish the stages of sintering, and the foundations to identify the range of applicability of the methods for determining the thermodynamic driving force of sintering. Nature Publishing Group UK 2017-09-11 /pmc/articles/PMC5593873/ /pubmed/28894247 http://dx.doi.org/10.1038/s41598-017-11667-2 Text en © The Author(s) 2017 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Okuma, Gaku
Kadowaki, Daiki
Hondo, Tsuyoshi
Tanaka, Satoshi
Wakai, Fumihiro
Interface topology for distinguishing stages of sintering
title Interface topology for distinguishing stages of sintering
title_full Interface topology for distinguishing stages of sintering
title_fullStr Interface topology for distinguishing stages of sintering
title_full_unstemmed Interface topology for distinguishing stages of sintering
title_short Interface topology for distinguishing stages of sintering
title_sort interface topology for distinguishing stages of sintering
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5593873/
https://www.ncbi.nlm.nih.gov/pubmed/28894247
http://dx.doi.org/10.1038/s41598-017-11667-2
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