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Initial rapid wetting in metallic systems
KTH.
2013 (English)In: Acta Materialia, ISSN 1359-6454, E-ISSN 1873-2453, Vol. 61, no 14, 5375-5386 p.Article in journal (Refereed) PublishedText
Abstract [en]

The initial rapid wetting of a solid surface by a liquid phase is an important step in many industrial processes. Liquid-phase sintering of powder metallurgical steels is one such industrial process, where metallic powders of micrometer size are used. Investigating the dynamic wetting of a high-temperature metallic drop of micrometer size experimentally is very challenging. Here, a phase-field-based numerical model is first implemented and verified by accurately capturing the initial dynamic wetting of millimeter-sized metal drops and then the model is extended to predict the dynamic wetting of a micrometer-sized metal drop. We found, in accordance with recent observations, that contact line friction is required for accurate simulation of dynamic wetting. Our results predict the wetting time for a micrometer-sized metal drop and also indicate that the dynamic wetting patterns at the micro- and millimeter length scales are qualitatively similar. We also found that the wetting process is much faster for a micrometer-sized metal drop compared to a millimeter-sized metal drop.

Place, publisher, year, edition, pages
2013. Vol. 61, no 14, 5375-5386 p.
Keyword [en]
Dynamic wetting, Phase field, Contact line friction, Millimeter- and micrometer-sized Cu drop, Powder metallurgical steels
National Category
Metallurgy and Metallic Materials Engineering and Technology
Identifiers
URN: urn:nbn:se:sh:diva-30177DOI: 10.1016/j.actamat.2013.05.026ISI: 000322750800022ScopusID: 2-s2.0-84882452190OAI: oai:DiVA.org:sh-30177DiVA: diva2:932479
Available from: 2013-09-05 Created: 2016-06-01 Last updated: 2016-06-01Bibliographically approved

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Amberg, GustavDo-Quang, Minh
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