Features of synthesis of ZnSe ceramics from nanopowders obtained using a high-power laser

IF 5.8 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of The European Ceramic Society Pub Date : 2024-10-04 DOI:10.1016/j.jeurceramsoc.2024.116971

Vladimir V. Osipov , Vyacheslav V. Platonov , Vladislav A. Shitov , Marina P. Zykova , Kristina I. Demidova , Sergey V. Zayats

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Abstract

The reasons for the occurrence of optical inhomogeneities in ZnSe or Fe:ZnSe ceramics, which were made from nanoparticles, obtained using a continuous wave ytterbium fiber laser, were investigated. Evaporation of ZnSe at T ≤ 900 ˚С results in formation of large pores (0.5–10 µm) in the ceramics. When the material is oxidized by means of oxygen adsorbed from air onto the surface of nanoparticles, such refractory phases as ZnO and ZnSeO₃ are formed. Even a low content of these phases (< 1 wt%) results in formation of accumulations of small crystallites (0.2–3 μm) in the ceramics. Numerous pores and extended accumulations of small crystallites are optical non-uniformities that scatter and absorb light. Changes in the chemical composition and contamination of ZnSe during the production of nanopowders and ceramics turned out to be too small for such inhomogeneities to form.

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利用大功率激光从纳米粉体中合成 ZnSe 陶瓷的特点

研究人员对利用连续波镱光纤激光器获得的由纳米粒子制成的 ZnSe 或 Fe:ZnSe 陶瓷中出现光学不均匀性的原因进行了研究。在 T ≤ 900 ˚С 的温度下蒸发 ZnSe，会在陶瓷中形成大孔（0.5-10 µm）。当纳米颗粒表面吸附空气中的氧气，使材料氧化时，就会形成难熔相，如 ZnO 和 ZnSeO3。即使这些相的含量很低（1 wt%），也会在陶瓷中形成小晶体（0.2-3 μm）堆积。大量的孔隙和小晶体的扩展堆积是光学上的不均匀性，会散射和吸收光线。在生产纳米粉体和陶瓷的过程中，硒化锌的化学成分和污染的变化太小，无法形成这种不均匀性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of The European Ceramic Society 工程技术-材料科学：硅酸盐

CiteScore

10.70

自引率

12.30%

发文量

863

审稿时长

35 days

期刊介绍： The Journal of the European Ceramic Society publishes the results of original research and reviews relating to ceramic materials. Papers of either an experimental or theoretical character will be welcomed on a fully international basis. The emphasis is on novel generic science concerning the relationships between processing, microstructure and properties of polycrystalline ceramics consolidated at high temperature. Papers may relate to any of the conventional categories of ceramic: structural, functional, traditional or composite. The central objective is to sustain a high standard of research quality by means of appropriate reviewing procedures.