| 總結: | To evaluate the crystallization behavior of Ti-bearing blast furnace slag-based glass ceramics, SiO<sub>2</sub>-Al<sub>2</sub>O<sub>3</sub>-CaO-MgO-TiO<sub>2</sub> systems with various TiO<sub>2</sub> were investigated. The crystallization process and mechanical properties were analyzed. The results show that with TiO<sub>2</sub> increasing, exothermic peak temperature (T<sub>p</sub>) decreases, and the crystallization is promoted by the introduction of TiO<sub>2</sub>. A small amount of TiO<sub>2</sub> (≤4%) addition can significantly promote crystallization, and when TiO<sub>2</sub> continues to increase, the crystallization is decreased slightly. The Avrami parameter (n) of all samples is less than 4, indicating that in prepared glass-ceramics, it is hard to achieve three-dimensional crystal growth. The main crystalline phase is akermanite–gehlenite. The addition of TiO<sub>2</sub> has no obvious effect on the type of main crystalline phase. The prepared glass-ceramic with 4% TiO<sub>2</sub> show good mechanical properties with the hardness values of 542.67 MPa. The recommended content of TiO<sub>2</sub> is 4% for preparing glass-ceramics.
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