Effect of heat treatment on the crystallization toughening of tailing-derived glass-ceramics

被引：0
作者：
Du Yongsheng [1 ]
Yang Xiaowei [1 ]
Zhang Hongxia [1 ]
Zhang Xuefeng [1 ]
Zhao Ming [2 ]
Chen Hua [1 ]
Ouyang Shunli [2 ]
Li Baowei [2 ]
机构：
[1] Inner Mongolia Univ Sci & Technol, Coll Sci, Baotou 014010, Peoples R China
[2] Inner Mongolia Univ Sci & Technol, Key Lab Integrated Exploitat Bayan Obo Multimetal, Baotou 014010, Peoples R China
来源：
JOURNAL OF CERAMIC PROCESSING RESEARCH | 2016年 / 17卷 / 12期
基金：
中国国家自然科学基金;
关键词：
Bayan Obo east mine tailing; Glass-ceramics; Heat treatment; Fracture surfaces; Fracture toughness; FLY-ASH; WASTE; SLAG; MICROSTRUCTURE; PERFORMANCE;
D O I：
暂无
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The effect of heat treatment to a parent glass of the composition CaO-MgO-Al2O3-SiO2 (CMAS) on the course of crystallization and properties of the Bayan Obo east mine tailing glass-ceramics is examined. The crystallization behavior, phase composition, morphology and structure of glass-ceramics are characterized. The results indicate that the phases formed in the glass-ceramics are augite and the initial nucleation phases are magnetite, which can be proved by differential scanning calorimetry (DSC), X-ray diffraction (XRD) and scanning transmission electron microscope (STEM). Heat treatment plays a significant role in improving the crystallization process, fracture characteristics, modulus and bending strength. All of these properties reach a maximum for the fully crystallized glass-ceramic. Scanning electron microscope (SEM) and atomic force microscope (AFM) are used to reveal the topography of the fracture surfaces. The intergranular fracture can be observed on the fracture surface.
引用
收藏
页码：1243 / 1248
页数：6
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