Effect of composition and sintering process on mechanical properties of glass ceramics from solid waste

X. Lu; Y. Li; W. Dai; D. Cang

doi:10.1179/1743676115Y.0000000045

Effect of composition and sintering process on mechanical properties of glass ceramics from solid waste

X. Lu, Y. Li, W. Dai, D. Cang

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

Sintered diopside glass ceramics were successfully prepared from mixtures of blast furnace slag, fly ash and mining tailing. Results showed that sample C2 with relatively low iron oxides and mass ratio of CaO/SiO₂ possessed the highest bending strength value among samples. A low content of iron oxide enhanced densification degree because pores were developed by reduction of ferric oxide into ferrous oxide. Moreover, a low CaO/SiO₂ mass ratio also greatly promoted the densification process by prolonging the sintering time and delaying the crystallisation. In addition, sample C1 developed by one-stage sintering had a worse mechanical performance than that obtained by two-stage sintering although they had the same crystals. For all samples, despite of different compositions and sintering processes, the main crystal phases are augite and diopside ferrian.

Original language	English
Pages (from-to)	13-20
Number of pages	8
Journal	Advances in Applied Ceramics
Volume	115
Issue number	1
DOIs	https://doi.org/10.1179/1743676115Y.0000000045
Publication status	Published - 2016 Feb
Externally published	Yes

Keywords

Diopside
Glass ceramics
Mechanical properties
Sintering
Waste

ASJC Scopus subject areas

Ceramics and Composites
Industrial and Manufacturing Engineering

UN SDGs

This output contributes to the following Sustainable Development Goal(s)

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title = "Effect of composition and sintering process on mechanical properties of glass ceramics from solid waste",

abstract = "Sintered diopside glass ceramics were successfully prepared from mixtures of blast furnace slag, fly ash and mining tailing. Results showed that sample C2 with relatively low iron oxides and mass ratio of CaO/SiO2 possessed the highest bending strength value among samples. A low content of iron oxide enhanced densification degree because pores were developed by reduction of ferric oxide into ferrous oxide. Moreover, a low CaO/SiO2 mass ratio also greatly promoted the densification process by prolonging the sintering time and delaying the crystallisation. In addition, sample C1 developed by one-stage sintering had a worse mechanical performance than that obtained by two-stage sintering although they had the same crystals. For all samples, despite of different compositions and sintering processes, the main crystal phases are augite and diopside ferrian.",

keywords = "Diopside, Glass ceramics, Mechanical properties, Sintering, Waste",

author = "X. Lu and Y. Li and W. Dai and D. Cang",

note = "Funding Information: This work has been financially supported by the National Natural Science Foundation of China (grant no. 51474028) and the Fundamental Research Funds for the Central Universities of China (grant no. FRF-TP- 14-106A2). Publisher Copyright: {\textcopyright} 2015 Institute of Materials, Minerals and Mining.",

year = "2016",

month = feb,

doi = "10.1179/1743676115Y.0000000045",

language = "English",

volume = "115",

pages = "13--20",

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TY - JOUR

T1 - Effect of composition and sintering process on mechanical properties of glass ceramics from solid waste

AU - Lu, X.

AU - Li, Y.

AU - Dai, W.

AU - Cang, D.

N1 - Funding Information: This work has been financially supported by the National Natural Science Foundation of China (grant no. 51474028) and the Fundamental Research Funds for the Central Universities of China (grant no. FRF-TP- 14-106A2). Publisher Copyright: © 2015 Institute of Materials, Minerals and Mining.

PY - 2016/2

Y1 - 2016/2

N2 - Sintered diopside glass ceramics were successfully prepared from mixtures of blast furnace slag, fly ash and mining tailing. Results showed that sample C2 with relatively low iron oxides and mass ratio of CaO/SiO2 possessed the highest bending strength value among samples. A low content of iron oxide enhanced densification degree because pores were developed by reduction of ferric oxide into ferrous oxide. Moreover, a low CaO/SiO2 mass ratio also greatly promoted the densification process by prolonging the sintering time and delaying the crystallisation. In addition, sample C1 developed by one-stage sintering had a worse mechanical performance than that obtained by two-stage sintering although they had the same crystals. For all samples, despite of different compositions and sintering processes, the main crystal phases are augite and diopside ferrian.

AB - Sintered diopside glass ceramics were successfully prepared from mixtures of blast furnace slag, fly ash and mining tailing. Results showed that sample C2 with relatively low iron oxides and mass ratio of CaO/SiO2 possessed the highest bending strength value among samples. A low content of iron oxide enhanced densification degree because pores were developed by reduction of ferric oxide into ferrous oxide. Moreover, a low CaO/SiO2 mass ratio also greatly promoted the densification process by prolonging the sintering time and delaying the crystallisation. In addition, sample C1 developed by one-stage sintering had a worse mechanical performance than that obtained by two-stage sintering although they had the same crystals. For all samples, despite of different compositions and sintering processes, the main crystal phases are augite and diopside ferrian.

KW - Diopside

KW - Glass ceramics

KW - Mechanical properties

KW - Sintering

KW - Waste

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Effect of composition and sintering process on mechanical properties of glass ceramics from solid waste

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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