High-Hardness Transparent Silicon Nitride Ceramic
Abstract
In this study, high-hardness transparent silicon nitride was fabricated using liquid-phase sintering. Powders were prepared by adding sintering additives in various ratios, followed by dry pressing at 200 MPa to obtain a circular green body. After forming the green body in the previous process, low-pressure liquid-phase sintering was performed at 1900 °C and 0.7 MPa under a nitrogen atmosphere to produce transparent silicon nitride. According to the test results, the material exhibited a density of 3.148 g/cm³, a Vickers hardness (HV10) of 2100, and a transmittance of 38.5% at a wavelength of 750 nm.
Fields of Study & Subjects
Advanced ceramic materials synthesis
Glass properties and applications
Advanced materials and composites
Publication details
- Journal / source
- Materials science forum
- Volume
- 1179
- Pages
- 53–59
- Publication date
- 26 February 2026
- Language
- EN