Abstract
The performance of a MgO-based refractory is studied after addition of carbon nanotubes (CNT) into the matrix with the presence of graphite. The dispersion is done with sonications in alcohol along with optimum addition of required material. X-ray diffraction (XRD) analysis executes identification of proper phase. From Fourier transform infrared spectroscopy (FTIR) studies, no distinct changes are observed in spectral analysis between two mixed samples after addition of CNT on the matrix. Field emission scanning electron microscopy (FESEM) studies elicidate morphology of the sample prepared. It also indicates that dispersion of CNT is possible only after functionalization to nave a COOH group with aqua regia (HNO3: H2SO4 = 3 : 1). CNT dispersion is not satisfactory under ultrasonication in ethanol media even after 15 h and 20 h of operation. CNT remain entangled by a certain portion within the matrix of the material. Thermal behaviour based on thermogravimetric analysis (TGA) is carried with and without CNT addition in the MgO-C matrix to correlate oxidation behaviour of the MgO-C-CNT.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Zhang, S., Marriott, N.J., Lee, W.E.: Thermochemistry and microstructures of MgO-C refractories containing various antioxidants. J. Eur. Ceram. Soc. 21 (2001) 1037–1047
Gokce, A.S., Gurcan, C., Ozgen, S., Aydin, S.: The effect of antioxidants on the oxidation behaviour of magnesia-carbon refractory bricks. Ceram. Int. 34 (2008) 323–330
Zhu, T., Lin, Y., Luo, M., Sang, S., Wang, Q., Zhao, L., Li, Y., Li, S.: Microstructure and mechanical properties of MgO-C refractories containing graphite oxide nanosheets (GONs). Ceram. Int. 39 (2013) 3017–3025
Rocha, V.G., Menéndez, R., Santamaría, R., Blanco, Granda, C.M.: Oxidation behaviour of magnesia-carbon materials prepared with petroleum pitch as binder. J. Anal. Appl. Pyrol. 88 (2010) 207–212
Sani, M.A.F., Yamaguchi, A.: Oxidation kinetics of MgO-C refractory bricks.Ceram. Int. 28 (2002) 835–839
Bag, M., Adak, S., Sarkar, R.: Study on low carbon containing MgO-C refractory: Use of nano carbon. Ceram. Int. 38 (2012) 2339–2346
Bag, M., Adak, S., Sarkar, R.: Nano carbon containing MgO-C refractory: Effect of graphite content. Ceram. Int. 38 (2012) 4909–4914
Guoping Wei, Boquan Zhu, Xiangcheng Li, Zheng Ma: Microstructure and mechanical properties of low-carbon MgO-C refractories bonded by a Fe nanosheet-modified phenol resin. Ceram. Int. 41 (2015) 1553–1566
Zhu, T., Lin, Y., Shaobai Sang, Shengli Jin, Yuanbing i, Lei Zhao, Xiong Liang: Effect of nanocarbon sources on Microstructure and Mechanical properties of MgO-C refractories. Ceram. Int. Ceram. Int. (2014) 4333–4340
Tianbin Zhu, Yawei Lin, Shengli Jin, Shaobai Sang, Qinghu Wang, Lei Zhao, Yuanbing Li, Shujing Li: Microstructure and mechanical properties of MgO-C refractories containing expanded graphite. Ceram. Int. 39 (2013) 4529–4537
Tianbin Zhu, Yawei Lia, Shengli Jin, Shaobai Sang, Ning Liao: Catalytic formation of one-dimensional nanocarbon and MgO whiskers in low carbon MgO-C refractories. Ceram. Int. 41 (2015) 3541–3548
Shubham Mahato, Shantanu K Behera: Oxidation resistance and microstructural evolution in MgO-C refractories with expanded graphite. Ceram. Int. 42 (2016) 7611–7619
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Mukherjee, S., Chakraborty, S. & Mukherjee, S. Effect of CNT Additions on a Magnesia-based Refractory in Relation to Morphology and Oxidation Behaviour. Interceram. - Int. Ceram. Rev. 65, 54–59 (2016). https://doi.org/10.1007/BF03401189
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/BF03401189