Abstract
SiO2-Al2O3-ZrO2 glasses with different nucleating agents were crystallized under special processing schedule. The microstructure and mechanical properties of the glass-ceramics in SiO2-Al2O3-ZrO2 system were investigated by differential scanning calorimetry, scanning electron microscopy, X-ray diffraction and three-point bending method. The results show that ZrO2 is not an effective nucleating agent in SiO2-Al2O3-ZrO2 system, while TiO2 is effective for the separation of spinel, and P2O5 facilitates solubility of ZrO2 in glass and crystallization. The main crystalline phases of the glass-ceramics are spinel, anorthite and tetragonal zirconia. With the increase of ZrO2 content in the glass, glass-ceramics show higher bending strength (120 MPa) than others.
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Foundation item: Project(2003AA332040) supported by the National High Technology Research and Development Program of China
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Yu, Lp., Xiao, Hn. & Hu, Pf. Effect of nucleating agents on microstructure and mechanical properties of SiO2-Al2O3-ZrO2 glass-ceramics. J Cent. South Univ. Technol. 12, 507–510 (2005). https://doi.org/10.1007/s11771-005-0112-z
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DOI: https://doi.org/10.1007/s11771-005-0112-z