CAS OpenIR  > 湿法冶金清洁生产技术国家工程实验室
Sinterability, microstructure and compressive strength of porous glass ceramics from metallurgical silicon slag and waste glass
Cao, Jianwei1; Lu, Jinshan2; Jiang, Longxiang2; Wang, Zhi1
2016-06-01
Source PublicationCERAMICS INTERNATIONAL
ISSN0272-8842
Volume42Issue:8Pages:10079-10084
AbstractPorous glass-ceramics have been prepared by the direct sintering of powder mixtures of metallurgical silicon slag and waste glass. The thermal behavior of silicon slag was examined by differential thermal analysis and thermogravimetry to clarify the foaming mechanism of porous glass-ceramics. The mass loss of silicon slag below 700 degrees C was attributed to the oxidation of amorphous carbon from residual metallurgical coke in the silicon slag, and the mass gain above 800 degrees C to the passive oxidation of silicon carbide. The porosity of sintered glass-ceramics was characterized in terms of the apparent density and pore size. By simply adjusting the content of waste glass and sintering parameters (i.e. temperature, time and heating rate), the apparent density changed from 0.4 g/cm(3) to 0.5 g/cm(3), and the pore size from 0.7 mm to 1.4 mm. In addition to the existing crystalline phases in the silicon slag, the gehlenite phase appeared in the sintered glass-ceramics. The compressive strength of porous glass-ceramics firstly increased and then decreased with the sintering temperature, reaching a maximal value of 1.8 MPa at 750 degrees C. The mechanical strength was primarily influenced by the crystallinity of glass-ceramics and the interfaces between the crystalline phases and the glassy matrix. These sintered porous glass-ceramics exhibit superior properties such as light-weight, heat-insulation and sound-absorption, and could found their potential applications in the construction decoration. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
KeywordSintering Porosity Strength Glass Ceramics Metallurgical Silicon Slag
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.ceramint.2016.03.113
Indexed BySCI
Language英语
WOS KeywordLIGHTWEIGHT PORCELAIN STONEWARE ; PARTICLE-SIZE ; OXIDATION ; CRYSTALLIZATION ; KINETICS ; ASH
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Ceramics
Funding OrganizationNational Natural Science Foundation of China(51404225) ; excellent youth project of National Natural Science Foundation of China(51422405)
WOS IDWOS:000374811600098
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/21041
Collection湿法冶金清洁生产技术国家工程实验室
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
2.Nanchang Hangkong Univ, Sch Mat Sci & Engn, Nanchang 330063, Peoples R China
Recommended Citation
GB/T 7714
Cao, Jianwei,Lu, Jinshan,Jiang, Longxiang,et al. Sinterability, microstructure and compressive strength of porous glass ceramics from metallurgical silicon slag and waste glass[J]. CERAMICS INTERNATIONAL,2016,42(8):10079-10084.
APA Cao, Jianwei,Lu, Jinshan,Jiang, Longxiang,&Wang, Zhi.(2016).Sinterability, microstructure and compressive strength of porous glass ceramics from metallurgical silicon slag and waste glass.CERAMICS INTERNATIONAL,42(8),10079-10084.
MLA Cao, Jianwei,et al."Sinterability, microstructure and compressive strength of porous glass ceramics from metallurgical silicon slag and waste glass".CERAMICS INTERNATIONAL 42.8(2016):10079-10084.
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