Preparation of CaF2 transparent ceramics by cold sintering. Issue 23 (1st December 2022)

• Record Type: Journal Article
• Authors: Guo, Ningjie; Zhu, Guisheng; Xu, Huarui; Jiang, Xupeng; Zhang, Xiuyun; Song, Jinjie; Zhao, Yunyun; Jiang, Kunpeng; Zhang, Yejun; Wang, Qiangbin; Long, Shenfeng; Wei, Tingting; Yu, Aibing
• Is Part Of: Ceramics international. Volume 48:Issue 23(2022)Part A
• Page Start: 34184
• Page End: 34189
• Publication Date: 2022-12-01
• Subjects: CaF2 -- Cold sintering process -- Low-temperature sintered ceramics -- Transparent ceramics; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2022.08.339
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: High transparent CaF2 ceramics were prepared by a cold sintering process, and their microstructure and transmittance were studied. The results show that the sample with a relative density of 97.65% can be successfully sintered by the cold sintering process at 350 °C and 470 MPa. Micrographs show that the ceramics have high relative density and the average grain size is about 0.3 μm. When the thickness of the prepared sample is 1 mm, the average transmittance in the visible region (380 nm–780 nm) is 81.99%, and the transmittance at 1100 nm is 89.00%. CaF2 ceramics microwave dielectric property is Q f = 10, 499 GHz, εr = 3.858 at 350 °C.