Abstract
For the development of a new wear resistant and chemically stable glass-ceramic glaze, the CaO–ZrO 2 –SiO 2 system was studied. Compositions consisting of CaO, ZrO 2 , and SiO 2 were used for frit, which formed a glass-ceramic under a single stage heat treatment in electric furnace. In the sintered glass-ceramic, wollastonite (CaSiO 3 ) and calcium zirconium silicate (Ca 2 ZrSi 4 O 12 ) were crystalline phases composed of surface and internal crystals in the microstructure. The internal crystal formed with nuclei having a composition of Ca 1.2 Si 4.3 Zr 0.2 O 8 . The CaO–ZrO 2 –SiO 2 system showed good properties in wear and chemical resistance because the Ca 2 ZrSi 4 O 12 crystals positively affected physical and mechanical properties.
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