文献类型：期刊文献

英文题名：In-situ observation on the agglomeration and dispersion of particles at the interface of high-temperature melts

作者：Li, Yutang Wang, Linzhu Li, Junqi Yang, Shufeng Chen, Chaoyi Li, Changrong Li, Xiang

第一作者：Li, Yutang

通信作者：Wang, Linzhu

机构：[1] School of Materials and Metallurgy, Guizhou University, Guiyang, Guizhou, 550025, China; [2] School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083, China; [3] Department of Materials & Metallurgy Engineering, Guizhou Institute of Technology, Guiyang, Guizhou, 550003, China

第一机构：School of Materials and Metallurgy, Guizhou University, Guiyang, Guizhou, 550025, China

通信机构：School of Materials and Metallurgy, Guizhou University, Guiyang, Guizhou, 550025, China

年份：2021

卷号：61

期号：3

起止页码：753-762

外文期刊名：ISIJ International

收录：EI(收录号：20211510198121);Scopus(收录号：2-s2.0-85103787283)

语种：英文

外文关键词：Wetting - Aluminum oxide - Morphology - Dispersions - Alumina - Magnesia - Sodium Aluminate

摘要：Understanding the mechanism of particle aggregation and dispersion at a liquid surface is important for the design and fabrication of novel materials. The behaviors of particles with various compositions at the interface of high-temperature melts, including the rapid growth of particles, the linear aggregation or curvilinear motion, and the wetting and separation processes, were observed in situ by high-temperature confocal laser scanning microscopy (HT-CLSM). We experimentally investigated the interaction force on particle pairs as a function of the interparticle distance and the size, composition and shape of particles. The experimental results indicate the attractive force between particle pairs decreases with increasing distance, and it increases as the size of the guest particle increases. The acting length of particles increases in the order of the alumina-magnesia particle (30 μm) 2O3·35%CaO 2O3·19%MgO 2O3·38%MgO 2O3·15%CaO 2O3. The complex selective attraction has been observed in the in situ experiments which is attributed to the polydirectional attractive force and anisotropy in the particle morphology. The relationship between the roundness with acceleration rate of particles indicates that the attraction between spherical particles tends to be less than the attraction between irregular particles with edges. ? 2021 The Iron and Steel Institute of Japan.