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

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

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Lu, X., Li, Y., Dai, W., & Cang, D. (2016). Effect of composition and sintering process on mechanical properties of glass ceramics from solid waste. Advances in Applied Ceramics, 115(1), 13-20. https://doi.org/10.1179/1743676115Y.0000000045

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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",

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AU - Lu, X.

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AU - Dai, W.

AU - Cang, D.

PY - 2016/2

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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.

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