Preferential growth of directionally solidified Al2O3/SmAlO3 eutectic ceramics

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Xu Wang
  • Wangshuai Xiang
  • Yujie Zhong
  • Fuxue Yan
  • Quangang Xian
  • Bailing Jiang
  • Jingyang Wang

Detail(s)

Original languageEnglish
Pages (from-to)424-427
Journal / PublicationScripta Materialia
Volume187
Online published4 Jul 2020
Publication statusPublished - Oct 2020

Abstract

Directionally solidified Al2O3/SmAlO3 (SAP) eutectic ceramics were successfully prepared with an optical floating zone furnace. The crystallographic orientation and interfacial structures were investigated by electron backscattered diffraction and transmission electron microscopy. It was found that Al2O3 has one preferred growth direction but the SAP has two. The preferred growth direction of the directionally solidified Al2O3/SAP eutectic ceramics was ⟨1010⟩ Al2O3 || ⟨100⟩SAP || ⟨011⟩ SAP. The near-coincidence site lattice models were proposed to interpret the intergrowth of the two SAPs. It was found that the two interfaces have nearly the same volume strain, validating the coexistence of both orientation relationships.

Research Area(s)

  • Al2O3/SmAlO3 eutectic ceramics, Directional solidification, HRTEM, Interfacial structure

Citation Format(s)

Preferential growth of directionally solidified Al2O3/SmAlO3 eutectic ceramics. / Wang, Xu; Xiang, Wangshuai; Zhong, Yujie; Wan, Lei; Yan, Fuxue; Xian, Quangang; Jiang, Bailing; Wang, Jingyang.

In: Scripta Materialia, Vol. 187, 10.2020, p. 424-427.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review