Factors influencing particle agglomeration during solid-state sintering

作     者：Chao Wang Shao-Hua Chen 

作者机构：State Key Laboratory of Nonlinear MechanicsInstitute of MechanicsChinese Academy of Sciences100190 BeijingChina 

出 版 物：《Acta Mechanica Sinica》 (力学学报（英文版）)

年 卷 期：2012年第28卷第3期

页      面：711-719页

核心收录：

学科分类：080706[工学-化工过程机械] 08[工学] 0806[工学-冶金工程] 0807[工学-动力工程及工程热物理] 080601[工学-冶金物理化学] 

基　　金：supported by the National Natural Science Foundation of China (10972220,11125211 and 11021262) 973 Project(2012CB937500) 

主　　题：Solid state sintering Discrete element simula tion. Agglomeration. Densification 

摘      要：Discrete element method （DEM） is used to study the factors affecting agglomeration in three-dimensional copper particle systems during solid-state sintering. A new parameter is proposed to characterize agglomeration. The effects of a series of factors are studied, including particle size, size distribution, inter-particle tangential viscosity, tem- perature, initial density and initial distribution of particles on agglomeration. We find that the systems with smaller particles, broader particle size distribution, smaller viscos- ity, higher sintering temperature and smaller initial density have stronger particle agglomeration and different distribu- tions of particles induce different agglomerations. This study should be very useful for understanding the phenomenon of agglomeration and the micro-structural evolution during sin- tering and guiding sintering routes to avoid detrimental ag- glomeration.