The Effect of Boron Content on Wetting Kinetics in Si-B Alloy/h-BN System

• Published in: Journal of materials engineering and performance 2019-07, Vol.28 (7), p.3819-3825
• Main Authors: Polkowski, Wojciech, Sobczak, Natalia, Bruzda, Grzegorz, Nowak, Rafał, Giuranno, Donatella, Kudyba, Artur, Polkowska, Adelajda, Pajor, Krzysztof, Kozieł, Tomasz, Kaban, Ivan
• Format: Article
• Language: English
• Subjects: BASES; BORON ALLOYS; BORON NITRIDES; Characterization and Evaluation of Materials; Chemistry and Materials Science; Corrosion and Coatings; ELECTRIC ARCS; ENERGY STORAGE; Engineering Design; INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; KINETICS; MATERIALS SCIENCE; Quality Control; Reliability; Safety and Risk; Tribology; WETTABILITY
• ISSN: 1059-9495; 1544-1024
• DOI: 10.1007/s11665-018-3786-8

In this work, the effect of boron content on the high-temperature wetting behavior in the Si-B alloy/h-BN systems was experimentally examined. For this reason, hypoeutectic, eutectic and hypereutectic Si-B alloys (Si-1B, Si-3.2B and Si-5.7B wt.%, respectively) were produced by electric arc melting method and then subjected to sessile drop/contact heating experiments with polycrystalline h-BN substrates, at temperatures up to 1750 °C. Similar to pure Si/h-BN system, wetting kinetics curves calculated on a basis of in situ recorded drop/substrate images point toward non-wetting behavior of all selected Si-B alloy/h-BN couples. The highest contact angle values of ~ 150° were obtained for hypoeutectic and eutectic Si-B alloys in the whole examined temperature range.