Interfacial energy of solid In₂Bi intermetallic phase in equilibrium with In–Bi eutectic liquid at 72 °C equilibrating temperature

详细信息	查看全文 | 推荐本文 |

• 作者：S. Akbulut ; Y. Ocak ; N. Maraş ; lı ; K. Keş ; lioğ ; lu ; U. Bö ; y&#xfc ; k ; E. Ç ; adı ; rlı ; H. Kaya
• 关键词：In₂Bi intermetallic phase ; Crystal growth ; Interfacial energy ; Grain boundary energy ; Thermal conductivity
• 刊名：Materials Characterization
• 出版年：2008
• 期刊代码：57_10445803
• 类别：ms
• 出版时间：August 2008
• 卷：59
• 期：8
• 页码：1101-1110
• 文件大小：1069 K

摘要

A radial temperature gradient on the sample was established by heating from centre with a single heating wire and cooling the outside of sample at − 10 °C with a heating/refrigerating circulating bath containing an aqueous ethylene glycol solution. The equilibrated grain boundary groove shapes of solid In₂Bi (In-33.2 at.%Bi) in equilibrium with In–Bi eutectic liquid (In-22 at.%Bi) were observed from quenched sample at 72 °C. Gibbs–Thomson coefficient and solid–liquid interfacial energy of solid In₂Bi in equilibrium with In–Bi eutectic liquid have been determined to be (11.3 ± 0.6) × 10^{− 8} K m and (47.8 ± 4.8) × 10^{− 3} J m^{− 2} from the observed grain boundary groove shapes. The grain boundary energy of solid In₂Bi phase has been calculated to be (92.8 ± 10.2) ×10^{− 3} J m^{− 2} by considering a force balance at the grain boundary grooves. The thermal conductivities of solid In solution (In-12.4 at.%Bi), solid In₂Bi (In-33.2 at.%Bi ), the eutectic liquid phase (In-22 at.%Bi) and their ratio at 72 °C have also been measured with radial heat flow apparatus and Bridgman type growth apparatus.