Journal
CERAMICS INTERNATIONAL
Volume 39, Issue 8, Pages 8885-8892Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2013.04.082
Keywords
Mechanical properties; Oxynitride glass-ceramics; Zirconia-doped; Oxynitride glass
Categories
Funding
- National Natural Science Foundation of China [51272288]
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Two series (N-9 and N-18 series) of zirconia-doped Y-Si-Al-O-N oxynitride glasses and glass-ceramics were designed. Nominal compositions of the glass samples in equivalent percent (eq%) are xZr: (24-0.25x)Y: (15-0.25x)Al: (61-0.5x)Si: 91O: 9 N and xZr: (24-0.25x)Y: (15-0.25x)Al: (61-0.5x)Si: 82O: 18 N (x=0, 2, 4, 6), respectively. The obtained samples were characterized by differential thermal analysis (DTA), X-ray diffraction (XRD), fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). Densities, Vickers hardness, fracture toughness, glass transition temperature, and thermal expansion coefficient data were established for each sample. Effect of Zr and N content on glass network structure, thermal and mechanical properties was investigated. It was found that the addition of zirconia is effective in preparing Y-Si-Al-O-N oxynitride glasses with lower glass transition temperature and higher hardness. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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