文献类型：期刊文献

英文题名：Nucleation and Ostwald Growth of Particles in Fe-O-Al-Ca Melt

作者：Wang, Linzhu Li, Junqi Yang, Shufeng Chen, Chaoyi Jin, Huixin Li, Xiang

第一作者：Wang, Linzhu

通信作者：Li, JQ[1];Yang, SF[2]

机构：[1]Guizhou Univ, Coll 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, Coll Mat & Met Engn, Guiyang 550003, Guizhou, Peoples R China

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

通信机构：corresponding author), Guizhou Univ, Coll Mat & Met, Guiyang 550025, Guizhou, Peoples R China;corresponding author), Univ Sci & Technol Beijing, Sch Met & Ecol Engn, Beijing 100083, Peoples R China.

年份：2018

卷号：8

期号：1

外文期刊名：SCIENTIFIC REPORTS

收录：;Scopus(收录号：2-s2.0-85040771826);WOS:【SCI-EXPANDED(收录号:WOS:000422739300098)】；

基金：Support of this work by the National Science Foundation of China (No. 51574190, 51574020 and 51704085) is gratefully acknowledged.

语种：英文

摘要：Tremendous focus has been put on the control of particle size distribution which effects the grain structure and mechanical properties of resulting metallic materials, and thus nucleation and growth of particles in solution should be clarified. This study uses classical nucleation theory and Ostwald ripening theory to probe the relationship between the compositions of Fe-O-Al-Ca melts and the behavior of particles under the condition of no external stirring. Our experimental data suggest that decreasing the initial Ca addition and Al addition is conductive to the increase of nucleation rate for calcium aluminate particles, which exhibits a same change trend with that predicted from classical nucleation theory. Based on the experimental evidence for particles size distribution in three-dimensional, we demonstrate that Ostwald ripening is the predominate mechanism on the coarsening of particles in Fe-O-Al-Ca melt at early stage of deoxidation under the condition of no external stirring but not at later stage.