Preparation of ceramic foams from ceramic tile polishing waste and fly ash without added foaming agent

被引：59
|
作者：
Liang, Bin [1 ]
Zhang, Mingxing [2 ]
Li, Hao [2 ]
Zhao, Ming [2 ]
Xu, Pengfei [3 ]
Deng, Leibo [2 ,4 ]
机构：
[1] Inner Mongolia Univ Sci & Technol, Sch Phys, Baotou 014010, Inner Mongolia, Peoples R China
[2] Inner Mongolia Univ Sci & Technol, Key Lab Integrated Exploitat Bayan Obo Multimet R, Baotou 014010, Inner Mongolia, Peoples R China
[3] Inner Mongolia Univ Sci & Technol, Sch Met & Mat, Baotou 014010, Inner Mongolia, Peoples R China
[4] Inner Mongolia Univ Sci & Technol, Inst Min Engn, Baotou 014010, Inner Mongolia, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2021年 / 47卷 / 16期
基金：
中国国家自然科学基金;
关键词：
Ceramic foams; Ceramic tile polishing waste; SiC; POROUS-GLASS-CERAMICS; SILICON-CARBIDE; SINTERING TEMPERATURE; OXIDATION; STRENGTH; SLAG; MICROSTRUCTURE; VISCOSITY; CORROSION; POWDERS;
D O I：
10.1016/j.ceramint.2021.05.047
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：
Ceramic foams were prepared from ceramic tile polishing waste and fly ash with borax as a fluxing agent at 925 degrees C. The foaming mechanism of SiC and the effects of borax on the mechanical properties, cellular morphology, and phase composition were investigated. The addition of 18 wt% borax lowered the sintering temperature by 300 degrees C and accelerated the passive oxidation of SiC, thus promoting the foaming process. The optimum ceramic foam obtained at 925 degrees C featured a homogenous porous structure, with an average pore diameter, low bulk density, high compressive strength, and high porosity of 1.20 mm, 0.55 g/cm(3), 7.8 MPa, and 79.4%, respectively. The excellent mechanical properties make ceramic foams potential candidates for lightweight panels for partition walls and ceiling tiles in building applications.
引用
收藏
页码：23338 / 23349
页数：12
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