Journal
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
Volume 38, Issue 5, Pages 2404-2409Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2017.11.016
Keywords
Ceramization of single crystals; Transparent ceramics; Nd,Y-codoped CaF2
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Different deformation rates of Nd,Y-codoped CaF2 transparent ceramics were prepared by ceramization of single crystals. The deformation rate effects on the crystallization behaviors, microstructures, mechanical properties, and optical performances were investigated for the first time. The results indicate that the comprehensive performances of Nd,Y-codoped CaF2 ceramic (Delta a = 62%) are the most optimal compared with other ceramics having different deformation rates (Delta a = 34%, 40%, 50%, and 75%). In further investigations of the optical properties, the Nd,Y-codoped CaF2 ceramic (Delta a = 62%) sample exhibited a high transparency (T-a > 91%, 3-mm thick, 250 similar to 1200 nm), low light scattering, superior fracture toughness (K-1c similar to 0.71 MPa.m(1/2)), strong fluorescence emission, long lifetime (tau = 348.72 mu s), and broad FWHM (29.2 nm), promising a good candidate for high-power laser material.
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