Role of Lu and La in the intergranular films on growth of the prism surface in β-Si3N4: A molecular dynamics study

SCRIPTA MATERIALIA

卷:113

Article

Jiang, Yun¹  Garofalini, Stephen H.¹ 

[1] Rutgers State Univ, Dept Mat Sci & Engn, Interfacial Mol Sci Lab, Piscataway, NJ 08854 USA

关键词: Intergranular films;    Molecular simulations;    Interfaces;    Rare earths;   

DOI  :  10.1016/j.scriptamat.2015.09.043

来源: Elsevier

【 摘 要 】

The different roles of Lu and La in the intergranular film in silicon nitride on the growth morphology are investigated via molecular dynamics simulations. While advanced microscopy shows each rare earth on the prism surface at room temperature, each additive affects the outward (perpendicular) growth of the surface differently. The simulations show the effect of elevated temperature on the adsorption of La and Lu on this surface that affects growth and provides the atomistic mechanism for the different growth morphology. (C) 2015 Elsevier Ltd. All rights reserved.

【 授权许可】

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