Mullite rod-enhanced porous SiC ceramics prepared at low temperature from photovoltaic waste

被引：21
|
作者：
Xing, Zhiheng [1 ]
Xiang, Daoping [1 ]
Ma, Yanping [1 ]
机构：
[1] Hainan Univ, State Key Lab Marine Resource Utilizat South Chin, 58 Peoples Rd, Haikou 570228, Hainan, Peoples R China
来源：
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2018年 / 38卷 / 15期
基金：
中国国家自然科学基金;
关键词：
Mullite rods; Photovoltaic solid waste; Porous SiC ceramic; Low temperature preparation; KERF-LOSS SLURRY; SILICON-CARBIDE CERAMICS; POLYCRYSTALLINE SILICON; GAS-PERMEABILITY; FABRICATION; RECOVERY; PHASE; SEPARATION; POWDER;
D O I：
10.1016/j.jeurceramsoc.2018.06.042
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：
In this paper, porous SiC ceramics (PSCs) were fabricated from photovoltaic waste at low temperatures. The effects of different additives and sintering temperatures on PSCs were studied in detail. The temperature of PSCs preparation can be reduced to 850 degrees C by adding MoO3 as catalyst. The PSCs are reinforced by mullite rods grown in-situ, they also have a high permeability coefficient due to their network structure. From 850 degrees C to 1200 degrees C, the open porosity of PSCs changed slightly, and was within 45.32 +/- 0.6%. The PSCs produced at 1000 degrees C had the highest gas permeability coefficient of 8.24 x 10(-11) m(2) and the highest flexural strength of 50.17 MPa. However, the same PSCs could not be fabricated at 850 degrees C when Y2O3 or CeO2 were used as sintering aids. This study provides an environment-friendly method for reusing photovoltaic waste and reducing the cost of preparing PSCs.
引用
收藏
页码：4842 / 4849
页数：8
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