Fabrication of Gd 2 O 3 ‐MgO nanocomposite optical ceramics with varied crystallographic modifications of Gd 2 O 3  constituent | Zendy

Wu Nan | Zendy; Li Xiaodong | Zendy; Li JiGuang | Zendy; Zhu Qi | Zendy; Sun Xudong | Zendy

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Fabrication of Gd 2 O 3 ‐MgO nanocomposite optical ceramics with varied crystallographic modifications of Gd 2 O 3 constituent

Author(s) -

Wu Nan,

Li Xiaodong,

Li JiGuang,

Zhu Qi,

Sun Xudong

Publication year - 2018

Publication title -

journal of the american ceramic society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.9

H-Index - 196

eISSN - 1551-2916

pISSN - 0002-7820

DOI - 10.1111/jace.15884

Subject(s) - materials science , nanocomposite , monoclinic crystal system , microstructure , hot pressing , ceramic , sintering , grain size , calcination , fabrication , phase (matter) , analytical chemistry (journal) , transparent ceramics , mineralogy , crystallography , crystal structure , composite material , chemistry , medicine , biochemistry , alternative medicine , organic chemistry , pathology , chromatography , catalysis

The fabrication of Gd 2 O 3 ‐MgO nanocomposite optical ceramics via hot‐pressing using sol‐gel derived cubic‐Gd 2 O 3 and MgO nanopowders was investigated. The precursor powder calcined at 600°C had an average particle size of 12 nm. The effects of hot‐pressing temperature on constituent phases, microstructure, mid‐infrared transmittance, and microhardness were studied. The crystallographic modifications of Gd 2 O 3 phase varied with the increase in sintering temperature from 1250 to 1350°C. The monoclinic‐Gd 2 O 3 phase was retained for the composite sintered at 1350°C and the sample had an average grain size of 90 nm, excellent transmission (80.4%‐84.8%) over 3‐6 μm wavelength range, and enhanced hardness value of 14.1 GPa.

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