Wetting Behavior of Al Melt/C Interface and Al-Ti Melt/C Interface Assisted by AlF₃-KF Salt Eutectic

Abstract:

This doc This paper is concerned with the wetting of Al melt/graphite (C) substrate and Al-Ti melt/graphite (C) under the action of AlF₃-KF salt eutectic. The results show that the intrinsic non-wetting behavior in the Al/C system was confirmed. The reason is because the existence of oxide film of Al melt obstructs the wetting between C and Al melt. However, due to assisted wetting of AlF₃-KF salt eutectic, the good wetting behavior of Al,Al-Ti/C system is attributed to the strong physics wetting and subsequent interaction wetting. During the interaction wetting, Al₄C₃ compound forms at the Al/C interfaces while Al₄C₃ and TiC compounds form at the Al-Ti/C interfaces. In the meantime, high temperature effect formed at the interfaces owing to the reaction between Al-Ti and C attains the thermodynamics transformation condition of Al₄C₃ into TiC.

• Periodical: Applied Mechanics and Materials (Volumes 490-491)
• Pages: 232-237
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.490-491.232
• Online since: January 2014
• Authors: Ying Long Li, F.R. Cao
• Keywords: Al/C Liquid-Solid Interface, AlF₃-KF Salt Eutectic, Al-Ti/C Liquid-Solid Interface, Interfacial Reaction, Interfacial Wetting

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