Hot Pressing Conditions of CVD ZnSe Powder Influence the Properties of Optical Ceramics

IF 0.6 4区材料科学 Q4 MATERIALS SCIENCE, CERAMICS

Glass and Ceramics Pub Date : 2025-05-16 DOI:10.1007/s10717-025-00750-0

N. A. Timofeeva, S. S. Balabanov, T. O. Evstropov, A. V. Naumova, S. V. Filofeev, R. S. Kovylin

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Abstract

This study examines the influence of vacuum hot pressing (VHP) conditions on the microstructure, density, and optical properties of ZnSe ceramics. Graphite and titanium foils, as well as alumina powder, were used to isolate the compact from the graphite mold, thereby enabling the variation in carbon contamination levels. Carbon was found to significantly affect the sintering and recrystallization of ZnSe ceramics, hindering the achievement of high density and transparency. Microstructural analysis revealed that the use of alumina as an insulating layer promotes more uniform grain growth, while minimizing abnormal grain enlargement. Spectral analysis demonstrated that maximum infrared (IR) transparency was achieved in samples with initial densities exceeding 97% after additional hot isostatic pressing (HIP). However, further enhancement of the optical properties necessitates the complete elimination of carbon contamination, which demands the replacement of graphite tooling in the VHP process.

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CVD ZnSe粉末热压条件对光学陶瓷性能的影响

本研究考察了真空热压（VHP）条件对ZnSe陶瓷的微观结构、密度和光学性能的影响。石墨和钛箔，以及氧化铝粉，被用来从石墨模具隔离压实，从而使碳污染水平的变化。发现碳对ZnSe陶瓷的烧结和再结晶有明显的影响，阻碍了ZnSe陶瓷高密度和透明的实现。显微组织分析表明，使用氧化铝作为绝缘层促进了更均匀的晶粒生长，同时最小化了异常晶粒的扩大。光谱分析表明，在额外的热等静压（HIP）后，样品的初始密度超过97%时，红外（IR）透明度达到最大。然而，进一步提高光学性能需要完全消除碳污染，这就要求在VHP工艺中更换石墨工具。

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

Glass and Ceramics 工程技术-材料科学：硅酸盐

CiteScore

1.00

自引率

16.70%

发文量

审稿时长

6-12 weeks

期刊介绍： Glass and Ceramics reports on advances in basic and applied research and plant production techniques in glass and ceramics. The journal''s broad coverage includes developments in the areas of silicate chemistry, mineralogy and metallurgy, crystal chemistry, solid state reactions, raw materials, phase equilibria, reaction kinetics, physicochemical analysis, physics of dielectrics, and refractories, among others.