International Journal of Advanced Materials Research
Articles Information
International Journal of Advanced Materials Research, Vol.1, No.3, Jul. 2015, Pub. Date: Jul. 28, 2015
Characterization of Some Nigerian Local Clays for Electrical Porcelain Applications
Pages: 113-119 Views: 1449 Downloads: 673
[01] J. E. O. Ovri, Department of Materials and Metallurgical Engineering, Federal University of Technology, Owerri, Imo state, Nigeria.
[02] C. Onuoha, Department of Materials and Metallurgical Engineering, Federal University of Technology, Owerri, Imo state, Nigeria.
Clays from Ibere and Awo-omama were characterized for electrical porcelain application. Test samples were made by varying the compositions of feldspar and quartz required to form mouldable plastic bodies with each clay. The following properties were determined: electrical resistivity, apparent porosity, water absorption and linear shrinkage. This characterization was carried out for both the locally made porcelains and the Power Holding Company of Nigeria (PHCN) (standard) porcelain. Results obtained showed that, for both clays, apparent porosity, water absorption and electrical resistivity increased with increase in the composition of the non-plastic materials (feldspar and quartz) while linear shrinkage decrease with increase in non-plastic materials. Also, for both clays, samples containing 50-70% clays, 20-30% feldspar and 10-20% quartz were found to yield results that compared well with results found in the literature as well as results obtained for PHCN (Standard) porcelain. It is therefore concluded that both clays are suitable for electrical porcelain application.
Porcelain, Characterization, Clay, Feldspar, Quartz, Electrical Resistivity
[01] Rado, P.(1969). An Introduction to the Technology of Pottery, First Edition Oxford: Pergamon.
[02] Barsoum, M. W. (1997), Fundamentals of Ceramics New York: McGraw-Hill pp. 8, 9, 74-79.
[03] Olupot, P.W. (2006), Assessment of Ceramic Raw Materials in Uganda for Electrical Porcelain. Licentiate Thesis in Materials Science, Department of Material Science and Engineering, Royal Institute of Technology (KTH) Stockholm, Sweden.
[04] Brady, G. S and CLAUSER, H. R (eds.) (1979), Materials Handbook New York: McGraw-Hill Pp. 410-411
[05] Dana, K., DAS, S. (2004), Effect of Substitution of Fly Ash for quartz in Triaxial Kaolin-quartz-feldpar System’’. Journal of the European Ceramic Society 24, Pp. 3169-3175.
[06] Reed, J.S. (1988). Introduction to the Principles of Ceramic Processing New York: John Wiley. Chapters 3,5-7,13,16.
[07] McKelvery,V.E.1986),Mineral Resources: Definitions, Uses, Classification and Future Availability in Bever, M.B (ed.), Encyclopaedia of Materials Science and Engineering, vol. 4.Pp 3073-81.
[08] MSMDNG.COM (2005) Federal Ministry of Solid Minerals Development profile of Solid Minerals Deposits in Nigeria[ On-line ], Available: (
[09] Annual Book of ASTM Standards, (1982) (20-80a) part 17: Refractories, Glass, Ceramic Materials, Carbon and Graphite Products Philadelphia: ASTM. PP. 7-9, 18, 51-55, 59-61, 190-93, 498-510.
[10] Chester, J. H (1973), Refractories, Production and Properties The Iron and Steel Institute, London, pp. 4-13,295-315
[11] Grimshaw, R. W (1971), The Chemistry and Physics of Clay and Allied Ceramic Materials, 4th Edition Revised New York: Wiley Interscience, p. 15
[12] Kingery, W.D. (1967), Introduction to Ceramics. John Wiley and Sons Inc.; New York.
[13] Ovri, J.E.O (1997), Sintering and Mechanical Strength of a Nigerian Clay: Journal Engineering Research No. 2, Pp. 53-64.
[14] Khanna, O.P. (2001), Mat. Sci. and Met. Rev. and Enlarg. Edit., Dhamput RAI Publs (P) Ltd. New Delhi,Pp161-163.
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