Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Wetting behavior and reactivity of molten silicon with h-BN substrate at ultrahigh temperatures up to 1750 °C
Year:2017
Research Areas
  • Silicon
Information
Abstract
For a successful implementation of newly proposed silicon-based latent heat thermal energy storage systems, proper ceramic materials that could withstand a contact heating with molten silicon at temperatures much higher than its melting point need to be developed. In this regard, a non-wetting behavior and low reactivity are the main criteria determining the applicability of ceramic as a potential crucible material for long-term ultrahigh temperature contact with molten silicon. In this work, the wetting of hexagonal boron nitride (h-BN) by molten silicon was examined for the first time at temperatures up to 1750 °C. For this purpose, the sessile drop technique combined with contact heating procedure under static argon was used. The reactivity in Si/h-BN system under proposed conditions was evaluated by SEM/EDS examinations of the solidified couple. It was demonstrated that increase in temperature improves wetting, and consequently, non-wetting-to-wetting transition takes place at around 1650 °C. The contact angle of 90° ± 5° is maintained at temperatures up to 1750 °C. The results of structural characterization supported by a thermodynamic modeling indicate that the wetting behavior of the Si/h-BN couple during heating to and cooling from ultrahigh temperature of 1750 °C is mainly controlled by the substrate dissolution/reprecipitation mechanism.
International
Si
JCR
Si
Title
Journal of Materials Engineering and Performance
ISBN
1059-9495
Impact factor JCR
1,331
Impact info
Volume
Journal number
From page
1
To page
14
Month
SIN MES
Ranking
Participants
  • Autor: W. Polkowski
  • Autor: N. Sobczak
  • Autor: R. Nowak
  • Autor: A. Kudyba
  • Autor: G. Bruzda
  • Autor: A. Polkowska
  • Autor: M. Homa
  • Autor: P. Turalska
  • Autor: M. Tangstad
  • Autor: J. Safarian
  • Autor: E. Moosavi-Khoonsari
  • Autor: Alejandro Datas Medina (UPM)
Research Group, Departaments and Institutes related
  • Creador: Departamento: Electrónica Física, Ingeniería Eléctrica y Física Aplicada
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)