Phase-Change Sintering Of Bacl2Transparent Ceramics

Keywords

Martensitic transformation; Severe plastic deformation; Transparent ceramics

Abstract

We report on the compaction of anhydrous BaCl2powders under severe plastic deformation and the conversion of their native orthorhombic cotunnite crystalline structure into a fine-grained cubic fluorite structure. This conversion, supported by x-ray diffraction and transmission electron microscopy data, and which enables the production of highly dense ceramics of BaCl2, occurs 500 °C below the known phase transition temperature of 925 °C for this material at 1 atm. We discuss this phase change in the context of a stress-induced polymorphic transformation and its implication on the fabrication of transparent ceramics for scintillator applications.

Publication Date

1-1-2017

Publication Title

Journal of Alloys and Compounds

Volume

705

Number of Pages

517-523

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.jallcom.2017.02.071

Socpus ID

85013858146 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85013858146

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