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Wiley, Journal of the American Ceramic Society, 12(106), p. 7611-7617, 2023

DOI: 10.1111/jace.19352

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Rapid fabrication of Si<sub>3</sub>N<sub>4</sub> ceramics with gradient appearance and microstructure

Journal article published in 2023 by Songmo Du ORCID, Jie Zhang ORCID, Fei Li ORCID, Zhanglin Chen ORCID, Shijia Zhang ORCID, Shuo Zhao ORCID, Wei Cui, Kexin Chen, Guanghua Liu ORCID
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

AbstractSi3N4 ceramics with tailored gradient in color and microstructure were prepared by a rapid cost‐effective one‐step approach. The gradient microstructure was obtained by the manipulation of the dissolution‐reprecipitation process, by controlling the sintering temperature and sintering additive content. In the Si3N4 ceramics, the β‐phase content gradually changed from 84% to 11%. The Si3N4 ceramics exhibited white color on one side and showed a hardness of 19 GPa and fracture toughness of 7 MPa·m1/2 and may be suitable for bio‐implantation applications.