Open Access

ARTICLE

High Hardness Ge₄₅As₄₀Se₁₅ Glasses Based on Ball-Milling and Chalcogenide Glasses Molded by Spark Plasma Sintering

Jierong Gu^1,*, Licheng Hua², Shuangquan Xie^3,4, Xiang Shen^3,4, Tiefeng Xu^3,4, Zijun Liu^3,4
1 Ningbo Institute of Oceanography, Ningbo, China
2 Key Laboratory of Impact and Safety Engineering, Ministry of Education, Ningbo University, Ningbo, China
3 Laboratory of Infrared Material and Devices & Key Laboratory of Photoelectric Materials and Devices of Zhejiang Province, Advanced Technology Research Institute, Ningbo University, Ningbo, China
4 Engineering Research Center for Advanced Infrared Photoelectric Materials and Devices of Zhejiang Province, Ningbo University, Ningbo, China
* Corresponding Author: Jierong Gu. Email:

Chalcogenide Letters https://doi.org/10.32604/cl.2026.086724

Received 04 June 2026; Accepted 06 July 2026; Published online 21 July 2026

Abstract

In this work, Ge₄₅As₄₀Se₁₅ chalcogenide glass was prepared using spark plasma sintering. This method synthesizes glass powder into blocks through a certain temperature and pressure, which is an effective densification and high-precision molding of infrared transparent blocks and lenses. Through X-ray diffraction (XRD) and differential scanning calorimetry analysis, we tracked the gradual evolution of the powder during ball milling and observed the existence of a glass transition temperature in the glass after powder hot pressing. This method can prepare components outside the conventional glass forming region with high hardness and infrared transmittance, providing a simple and economical synthetic approach for preparing chalcogenide glass materials with optical application potential.

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Keywords

Chalcogenide glass; spark plasma sintering; glass forming region; high hardness

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