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, LZ[1]

机构：[1]Guizhou Univ, Sch Mat & Met, Guiyang 550025, Guizhou, Peoples R China;[2]Univ Sci & Technol Beijing, Sch Met & Ecol Engn, Beijing 100083, Peoples R China;[3]Guizhou Inst Technol, Dept Mat & Met Engn, Guiyang 550003, Guizhou, Peoples R China

第一机构：Guizhou Univ, Sch Mat & Met, Guiyang 550025, Guizhou, Peoples R China

通信机构：corresponding author), Guizhou Univ, Sch Mat & Met, Guiyang 550025, Guizhou, Peoples R 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：;WOS:【SCI-EXPANDED(收录号:WOS:000635252400012)】；

基金：This research is supported by the National Science Foundation of China (No. 51804086, 51864013, 52064011 and 51704085) and National Natural Science Foundation of Guizhou Province (Grant No. [2019]1086). Additionally, this project is supported by the Program Foundation for Talents of Education Department of Guizhou Province (Grant No. Qian Jiao He [2018]105), and is supported by the research program for talented scholars of the Guizhou Institute of Technology with grant No. XJGC20190962.

语种：英文

外文关键词：particle; agglomeration; in situ observation; interface

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 mu m) < calcium aluminate particle with low CaO contents (80 mu m)< alumina particle (110 mu m). The estimated attractive interaction between particle pairs based on in situ observation increases in the order of Al2O3 center dot 35%CaO < Al2O3 center dot 19%MgO < Al2O3 center dot 38%MgO < Al2O3 center dot 15%CaO < Al2O3. 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.