中钛型含钛高炉渣制微晶玻璃及其性能研究<sup>*</sup>

doi:10.11896/j.issn.1005-023X.2017.02.027

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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.

Key words： titanium-bearing blast furnace slag glass-ceramics nucleating agent mechanical properties resource comprehensive utilization

Published: 02 May 2018

CLC number:

TF09

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	HE Dongfeng
	PAN Jiangtao
	ZENG Fanbo

Cite this article:

HE Dongfeng,PAN Jiangtao,ZENG Fanbo. Preparation and Characterization of Glass-ceramics Based on Medium Titanium-bearing Blast Furnace Slag[J]. Materials Reports, 2017, 31(2): 126-129.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2017.02.027 OR http://www.mater-rep.com/EN/Y2017/V31/I2/126

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