Comparison of commercial and synthesized CaF2 powders for preparing transparent ceramics. Issue 13 (September 2017)

• Record Type: Journal Article
• Authors: Li, Weiwei; Huang, Haijun; Mei, Bingchu; Song, Jinghong
• Is Part Of: Ceramics international. Volume 43:Issue 13(2017)
• Page Start: 10403
• Page End: 10409
• Publication Date: 2017-09
• Subjects: Transparent ceramic -- Calcium fluoride -- Hot-pressing method -- Nanopowders; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2017.05.075
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Two different types of calcium fluoride powders (commercial and synthesized CaF2 powders) were used to fabricate ceramics by the hot-pressing (HP) technique. The synthesized CaF2 powders were prepared by a direct precipitation method, and the differences in characteristics between these two powders were investigated. We demonstrated that the transparency of the ceramics is highly dependent on the morphology and particle size distribution of the starting CaF2 powders. The obtained translucent ceramics fabricated using the synthesized CaF2 nanoparticles showed better densification and optical transmittance than the commercial powders. The average grain size of the ceramic sintered at 800 °C was 4.1 µm, with residual pores inside the grains.