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Development of a Novel Aluminium Based Metal Matrix Composite using Insitu Ternary Mixture (Al2O3-SiC-C) Prepared by Thermal Treatment of Fly-ash

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Abstract

In the present investigation a new ternary ceramic matrix composite is developed from Indian fly ash by thermal treatment under reducing atmosphere. The ternary mixture, comprising of Al2O3-SiC-C, is formed by insitu conversion of SiO2 to SiC in the fly ash under reducing atmosphere. Analyses of the treated product by XRD, SEM, and EDAX have ensured formation of SiC from SiO2. Converted SiC are rod shaped whiskers with the aspect ratio ranging between 40 to 50. The ternary mixture is added to aluminum melt in a bottom pouring pit type resistance furnace for the preparation of novel aluminum fly ash metal matrix composite (ALFMMC). Physical and mechanical properties of the novel ALFMMC (treated fly ash) composite are evaluated. For comparison purpose, aluminum fly ash composite is prepared with (untreated flyash) under identical condition of melting and casting. Wear resistance is found to be superior for the novel composite.

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Acknowledgments

The Authors wish to acknowledge the Director of Institute of Minerals & Materials Technology (IMMT) Bhubaneswar for rendering support to carry out some experiments in their laboratory. Further authors also gratefully acknowledge the chairman& secretary, Gandhi Institute of Engineering &Technology, Gunupur to permit this to publish their work in the scientific journal.

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Authors and Affiliations

  1. Department of Metallurgical & Materials Engineering, GIET, Gunupur, Odisha, India

    R. Govindarao, R. I. Ganguly & R. R. Dash

  2. Department of Metallurgical & Materials Engineering, NIT, Warangal, Andhra Pradesh, India

    P. Surya Prakash Rao & G. S. Reddy

  3. IMMT, Bhubaneswar, Odisha, India

    S. K. Singh

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  1. R. Govindarao
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  2. R. I. Ganguly
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  3. R. R. Dash
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  4. P. Surya Prakash Rao
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  5. G. S. Reddy
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  6. S. K. Singh
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Correspondence to R. Govindarao.

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Govindarao, R., Ganguly, R.I., Dash, R.R. et al. Development of a Novel Aluminium Based Metal Matrix Composite using Insitu Ternary Mixture (Al2O3-SiC-C) Prepared by Thermal Treatment of Fly-ash. Trans Indian Inst Met 68, 951–958 (2015). https://doi.org/10.1007/s12666-015-0532-x

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  • DOI: https://doi.org/10.1007/s12666-015-0532-x

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