Journal
SCRIPTA MATERIALIA
Volume 178, Issue -, Pages 428-432Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2019.12.015
Keywords
Mg0.55Al2.36O3.81N0.19; Transparent ceramic; Optical property; Crystal structure
Categories
Funding
- National Key R&D Program of China [2017YFB0310500]
- National Natural Science Foundation of China [51472195, 51502219, 51727809]
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A novel Mg0.55Al2.36O3.81N0.19 transparent ceramic with an infrared transmission range comparable to c-plane sapphire was prepared based on the intentional design of the composition. This material possesses outstanding optical properties, such as a high in-line transmittance up to 86.5% at 3.7 mu m, a refractive index of 1.7240 at 589.3 nm and an absorption coefficient of 0.8 cm(-1) at 5 mu m. The effects of chemical composition on the crystal structure and optical properties of spinet material were discussed. In particular, the chemical bond strength of disordered tetrahedron varying with the composition largely determines the infrared transparent range of transparent ceramic. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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