|About this Abstract
||Liquid Metal Processing & Casting Conference (LMPC 2019)
||Liquid Metal Processing & Casting
||Wettability of Molten Fe-Si-B Alloy on Graphite, Al2o3, and h-BN Substrates
||Jianmeng Jiao, Bettina Grorud, Jafar Safarian, Merete Tangstad
|On-Site Speaker (Planned)
Fe-26.38Si-9.35B alloy (numbers in mass %) is of interest as a phase change material (PCM) because it exhibits high thermal conductivity, moderate melting point, high latent heat, and low cost. This study offers valuable insights into the contact angles of molten eutectic Fe-26.38Si-9.35B alloy on various substrates using the sessile drop method. Moreover, the reactivity has been investigated by examining the cross-sections between Fe-26.38Si-9.35B droplets and substrates with a scanning electron microscope (SEM). The purpose of this study is to find a proper refractory material for the new Fe-26.38Si-9.35B PCM. These wetting tests confirm that the contact angle between molten Fe-26.38Si-9.35B and Al2O3 is about 112°. Molten Fe-26.38Si-9.35B spreads over the graphite plate and the contact angle is estimated to be 31° and a continuous silicon carbide (SiC) layer is formed between the molten Fe-26.38Si-9.35B and graphite. Interestingly, three melting/solidification cycles have been performed on hexagonal boron nitride (h-BN) substrate at the temperature range of 1100-1550 °C. The contact angle is observed to be 142° in the first cycle, 105° in the second cycle, and 130° in the third cycle. This study contributes to our understanding of the wettability properties of molten Fe-26.38Si-9.35B alloy on various substrates.
||Definite: At-meeting proceedings