Effect of Sintering Temperature on the Physical Properties and Microstructure of In Situ Nitrides Bonded MgAl2O4-C Refractories

Shao Hua Wang; Cheng Ji Deng; Hong Xi Zhu; Wen Jie Yuan

doi:10.4028/www.scientific.net/KEM.697.591

Paper Titles

Nitridation Isothermal Kinetics of In Situ β-Sialon Bonded Al₂O₃-C Refractories
p.572

Effects of Al Content on the Phase Constitution of Aluminum-Periclase Composites at 1600°C in N₂
p.576

Effect of Spinel Content on the Reaction of Porous Periclase-Spinel Ceramics and Cement Clinker
p.581

Influence of Contents of Pre-Synthesized Spinel on the Microstructures and Mechanical Properties of the Lightweight Corundum-Spinel Refractory Castables
p.586

Effect of Sintering Temperature on the Physical Properties and Microstructure of In Situ Nitrides Bonded MgAl₂O₄-C Refractories
p.591

Effect of Particle Size Distribution of Raw Materials on Properties of Magnesia-Alumina Refractory
p.595

Preparation and Properties of Lightweight, High-Strength Insulation Materials Using Fly Ash Floating Beads
p.599

Effect of Zircon Content on the Microstructure and Physical Properties of Chamotte Refractories
p.604

Effects of Short PAN Fiber Contents on Mechanical Properties of Metakaolin-Blast Furnace Slag Based Geopolymers
p.608

HomeKey Engineering MaterialsKey Engineering Materials Vol. 697Effect of Sintering Temperature on the Physical...

Effect of Sintering Temperature on the Physical Properties and Microstructure of In Situ Nitrides Bonded MgAl₂O₄-C Refractories

Abstract:

The in situ nitrides bonded MgAl₂O₄-C refractories were prepared by using high quality fused spinel (MgAl₂O₄≥ 97%), natural flake graphite (C ≥ 96%) and silicon powder (Si ≥ 98%) as raw materials and the liquid calcium lignosulfonate with a concentration of 1.25 g/ml was used as binder (4 wt%). The effect of sintering temperatures on physical properties and phase compositions were investigated. The results show that β-sialon and α-Si₃N₄were formed in the samples sintered at 1400°C, 1450°C and 1500°C, and AlON and AlN were formed in the samples sintered at 1550°C. The sample that sintered at 1450°C exhibits the best bulk density and apparent porosity of 2.84 g/cm³ and 14.73%, respectively, and the highest compressive strength

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Key Engineering Materials (Volume 697)

Pages:

591-594

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.697.591

Citation:

Cite this paper

Online since:

July 2016

Authors:

Shao Hua Wang*, Cheng Ji Deng, Hong Xi Zhu, Wen Jie Yuan

Keywords:

AlON, MgAl₂O₄-C Refractory, SiAlON, Sintering Temperature

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

* - Corresponding Author

References

[1] V. munoz, A.G.T. Martinez. Thermal evolution of Al2O3-MgO-C refractories, J. Proce. Mater. Sci. 1 (2011), 410-417.

Google Scholar

[2] P.P. Zhang, P. Liu, Y. Sun, J. Wang, et al. Aqueous Gelcesting of the Transtrent MgAl2O4 Spinel Ceramics, J. Alloys. Compd. 646 (2015), 272-275.

Google Scholar

[3] Nemati. Z, A. Moetakef, C. G. Investigation of graphite oxidation kinetics in MgO-C composite via artificial neural network approach, J. Comp. Mater. Sci. 39(2007), 723-728.

DOI: 10.1016/j.commatsci.2006.09.008

Google Scholar

[4] Luo. M, Li. Y. W, Sang. S. B, et, al. In-situ formation of carbon nanotubes and ceramic whiskers in Al2O3-C refractories with addition of Ni-catalyzed phenolic resin, J. Mater. Sci. Eng. 558(2012), 533-542.

DOI: 10.1016/j.msea.2012.08.044

Google Scholar

[5] S. Sanjabi, A. Obeydavi. Synthesis and characterization of nanocrystalline MgAl2O4 spinel via modified sol-gel method, J. Alloys. Compd. 645 (2015), 535-540.

DOI: 10.1016/j.jallcom.2015.05.107

Google Scholar

[6] O. Morey, P. Goeuriot, P. Grosseau, B. Guilhot, et al. Spectroscopic analysis of MgAlON spinel powders: influence of nitrogen content, J. Solid State Inoics. 159 (3) (2003), 381-388.

DOI: 10.1016/s0167-2738(02)00918-9

Google Scholar

[7] Li. X. C, Zhu. B. Q, Wang. T. X. Electromagnetic field effects on the formation of MgO dense layer in low carbon MgO-C refractories, J. Ceram. Int. 38(2012), 2883-2887.

DOI: 10.1016/j.ceramint.2011.11.061

Google Scholar

[8] Roungos. V, Aneziris. C. G. Improved thermal shock performance of Al2O3-C refractories due to nano-scaled additives, J. Ceram. Int. 38(2012), 919-927.

DOI: 10.1016/j.ceramint.2011.08.011

Google Scholar

[9] S. Pichlbauer, H. Harmuth, Z. Lences, P. Sajgalik. Preliminary investigation of the production of MgAlON bonded refractories, J. Eur. Ceram. Soc. 32 (9) (2012), 2013-(2018).

DOI: 10.1016/j.jeurceramsoc.2011.10.036

Google Scholar

[10] J. Zheng, B. Forslund. Carbothermal Preparation of β-Sialon Powder at Elevated Nitrogen Pressures, J. Eur. Ceram. Soc. 19 (1998), 175-185.

DOI: 10.1016/s0955-2219(98)00193-9

Google Scholar

[11] Z. Aly, E. R. Vance, D. S. Perera, J. V. Hanna, et al. Aqueous leachability of metakaolin-based geopolymers with molar ratios of Si/Al=1. 5-4, J. Nucl. Mater. 78 (2008), 172-179.

DOI: 10.1016/j.jnucmat.2008.06.015

Google Scholar