Influence of CeO2 addition on the preparation of foamed glass-ceramics from high-titanium blast furnace slag

被引：0
作者：
Hong-ling Zhou
Ke-qin Feng
Chang-hong Chen
Zi-di Yan
机构：
[1] Sichuan University,School of Manufacturing Science and Engineering
来源：
International Journal of Minerals, Metallurgy, and Materials | 2018年 / 25卷
关键词：
foamed glass-ceramics; cerium oxide; blast furnace slag; sintering; crystallization;
D O I：
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中图分类号：
学科分类号：
摘要：
Foamed glass-ceramics doped with cerium oxide (CeO2) were successfully prepared from high-titanium blast furnace slag by one-step sintering. The influence of CeO2 addition (1.5wt%–3.5wt%) on the crystalline phases, microstructure, and properties of foamed glass-ceramics was studied. Results show that CeO2 improves the stability of the glass phase and changes the two-dimensional crystallization mechanism into three-dimensional one. XRD analysis indicates the presence of Ca(Mg, Fe)Si2O6 and Ca(Ti, Mg, Al)(Si, Al)2O6 in all sintered samples. Added with CeO2, TiCeO4 precipitates, and crystallinity increases, leading to increased thickness of pore walls and uniform pores. The comprehensive properties of foamed glass-ceramics are better than that of samples without CeO2. In particular, the sample added with a suitable amount of CeO2 (2.5wt%) exhibits bulk density that is similar to and compressive strength (14.9 MPa) that is more than twice of foamed glass-ceramics without CeO2.
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页码：689 / 695
页数：6
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