Microstructure and mechanical properties of MgOC refractories containing graphite oxide nanosheets (GONs)
Source abstract
Abstract
Abstract MgOC refractories containing graphite oxide nanosheets (GONs) and Al, Si additives were prepared in this work. Firstly the MgOGONs composite powders were fabricated by common ball milling of expanded graphite and magnesia powders, and then incorporated into MgOC refractories. The phase composition, microstructure, mechanical and thermo-mechanical properties of MgOC refractories treated at the different temperatures were investigated by means of X-ray diffraction (XRD), scanning electron microscopy (SEM) coupled with energy dispersive X-ray spectroscopy (EDS), three-point bending method and thermal shock test. The results showed that the GONs of different sizes and thicknesses were well distributed in magnesia powders. Addition of GONs had a positive influence on the mechanical properties of MgOC refractories. After firing at 1400 °C, much higher cold modulus of rupture (CMOR) and increased displacement were achieved for MgOC specimens with GONs added compared to that of the specimen contained only flaky graphite. Moreover, the thermal shock resistance of all the specimens containing GONs was better than that for the specimen containing no GONs. It was suggested that GONs and in-situ formed ceramic phases in the matrix strengthened and toughened MgOC refractories.
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Research context
OpenAlex topics: Advanced ceramic materials synthesis · Aluminum Alloys Composites Properties · Boron and Carbon Nanomaterials Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (32)
Show source-provided references
1. Thermochemistry and microstructures of MgOC refractories containing various antioxidants10.1016/S0955-2219(00)00308-3 ↗
2. Carbon based refractories
3. I. Bae, M. Kim, D. Chung, M. Shin, Y. Seo, The improvement of MgO–C bricks toughness for RH snorkels, in: Proceedings of UNITECR’05 Congress, 8–11 November, Orlando, USA, 2005.
4. S. Tamura, T. Ochiai, S. Takanaga, T. Kanai, H. Nakamura, Nano-tech. refractories-1: the development of the nano structural matrix, in: Proceedings of UNITECR’03 Congress, 19–22 October, Osaka, Japan, 2003, pp. 517–520.
5. S. Takanaga, T. Ochiai, S. Tamura, T. Kanai, H. Nakamura, Nano-tech. refractories-2: the application of the nano structural matrix to MgO–C bricks, in: Proceedings of UNITECR’03 Congress, 19–22 October, Osaka, Japan, 2003, pp. 521–524.
6. M. Hatta, S. Takanaga, O. Matsuura, T. Ochiai, S. Tamura, Nano-tech. refractories-5: the application of B4C–C particles to MgO–C bricks, in: Proceedings of UNITECR’07 Congress, 18–21 September, Dresden, Germany, 2007, pp. 614.
7. S. Takanaga, Y. Fujiwara, M. Hatta, T. Ochiai, S.Tamura, Nano-tech. refractories-3: development of “MgO-rimmed MgO–C brick”, in: Proceedings of UNITECR’05 Congress, 8–11 November, Orlando, USA, 2005.
8. H. Yasumitsu, M. Hirashima, O. Matsuura, S. Takanaga, T. Ochiai, S. Tamura, Nano-tech. refractories-9: the basic study on the formation of the nano structured matrix in MgO–C bricks, in: Proceedings of UNITECR’11 Congress, October 30–November 2, Kyoto, Japan, 2011.
9. Study on low carbon containing MgOC refractory: use of nano carbon10.1016/j.ceramint.2011.10.086 ↗
10. Microstructure evaluation of MgOC refractories with TiO2- and Al-additions10.1016/j.jeurceramsoc.2006.03.001 ↗
11. The influence of in situ spinel formation on microstructure and phase evolution of MgOC refractories10.1016/j.jeurceramsoc.2007.07.009 ↗
12. U. Klippel, C.G. Aneziris, Propects of ceramic nanoparticles as additives for carbon-boned MgOC refractories, in: Proceedings of the 49th International Colloquium on Refractories, Aachen, Germany, 2006, pp. 6–9.
13. S. Adak, A.S. Bal, A.K. Chattopadhyay, P.B. Panda, R.P. Rana, Effect of nano-titania addition of the properties of magnesia–carbon refractories, in: Proceedings of the 54th International Colloquium on Refractories, Aachen, Germany, 2011, pp. 180–183.
14. Synthesis of Al2O3SiC composite and its effect on the properties of low-carbon MgO–C refractories10.1016/S1005-0302(10)60112-0 ↗
15. Y. Matsuo, M. Tanaka, J. Yoshitomi, S. Yoon, J. Miyawaki, Effect of the carbon nanofiber addition on the mechanical properties of MgO–C brick, in: Proceedings of UNITECR’11 Congress, October 30–November 2, Kyoto, Japan, 2011.
16. Processing of nanographene platelets (NGPs) and NGP nanocomposites: a review10.1007/s10853-008-2755-2 ↗
17. Graphene-based polymer nanocomposites10.1016/j.polymer.2010.11.042 ↗
18. A review on the mechanical and electrical properties of graphite and modified graphite reinforced polymer composites10.1016/j.progpolymsci.2010.11.003 ↗
19. Preparation of graphene nanosheet/alumina composites by spark plasma sintering10.1016/j.materresbull.2010.11.005 ↗
20. Preparation and electrical properties of graphene nanosheet/Al2O3 composites10.1016/j.carbon.2010.01.017 ↗
21. Determination of structural and mechanical properties of multilayer graphene added silicon nitride-based composites10.1016/j.ceramint.2011.06.051 ↗
22. Preparation of expanded graphite with 160μm mesh of fine flake graphite10.1016/j.matlet.2005.10.004 ↗
23. A rapid and efficient method to prepare exfoliated graphite by microwave irradiation10.1016/j.carbon.2008.10.013 ↗
24. Preparation and characterization of sulfur-free exfoliated graphite with large exfoliated volume10.1016/j.matlet.2011.11.078 ↗
25. Low energy pure shear milling: a method for the preparation of graphite nano-sheets10.1016/j.scriptamat.2006.08.002 ↗
26. Crystallization degree change of expanded graphite by milling and annealing10.1016/j.jallcom.2008.07.063 ↗
27. Porous graphite matrix for chemical heat pumps10.1016/S0008-6223(98)00150-X ↗
28. Carbon nanotube growth in the pores of expanded graphite,by chemical vapor deposition10.1016/j.carbon.2009.02.028 ↗
29. Behavior of magnesium and silicon in the formation of MgO/AlN composite10.1007/s10853-009-3616-3 ↗
30. Synthesis and characterization of in situ Al–AlN composite by nitrogen gas bubbling method10.1016/j.jallcom.2010.11.065 ↗
31. Effect of temperature on the properties and microstructures of carbon refractories for blast furnace10.1007/s11661-009-9850-0 ↗
32. Microstructures and mechanical properties of Al2O3C refractories with silicon additive using different carbon sources10.1016/j.msea.2010.12.066 ↗