Abstract: Medium titanium-bearing blast furnace slag was used as the main material to manufacture glass-ceramic. TiO2 in this type of blast furnace slag serves as an effective constitute in terms of promoting the nucleation process. The effects of the mass fraction of blast furnace slag in the parent glass on the crystallization and properties of final products were studied by scanning calorimetry (DSC), X-ray diffraction (XRD), scanning electron microscopy (SEM) and etc. It is found that a medium-level of TiO2 in blast furnace slag could effectively initiate the crystallization within the parent glass. Low mass fraction of blast furnace slag would result in wollastonite as the major crystalline phases. In contrast, when the mass fraction of blast furnace slag exceeded 70%, the major phase would turn into gehlenite. Furthermore, when the mass fraction of blast furnace slag was 63%, the final glass-ceramic product with a desired crystallinity was characterized by excellent performance. The corresponding heat treatment systerm included a nucleating stage at 720 ℃ for 1 h and a crystal growth stage at 945 ℃ for 2 h. The resulting product possessed a bending strength of 121.68 MPa and a microhardness of 7.81 GPa.
贺东风, 潘江涛, 曾凡博. 中钛型含钛高炉渣制微晶玻璃及其性能研究*[J]. 《材料导报》期刊社, 2017, 31(2): 126-129.
HE Dongfeng, PAN Jiangtao, ZENG Fanbo. Preparation and Characterization of Glass-ceramics Based on Medium Titanium-bearing Blast Furnace Slag. Materials Reports, 2017, 31(2): 126-129.
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2017, Vol. 31 
