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Continuous fiber reinforced mullite matrix composites by sol–gel processing: Part II Properties and fracture behaviour

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Abstract

The mechanical and interfacial properties of the mullite matrix and alumina–silica matrix composites reported in a previous publication [1], are related to the processing parameters. The flexural strengths were in the range of 428–737 MPa, flexural moduli from 82–214 GPa, work of fracture values from 293–482 KJ m-2 and ultimate failure strains from 0.16–0.45%. The interfacial strengths were determined by the fibre push-in test and compared with fracture behaviour. The formation of different interfaces in the composites and the influence of the density of thermally-induced cracks and porosity on flexural modulus is discussed.

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Authors and Affiliations

  1. Department of Engineering Materials, University of Sheffield, Sir Robert Hadfield Building, Mappin Street, Sheffield, S1 3JD, UK

    J Wu

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  1. J Wu
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  2. F. R Jones
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  3. P. F James
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Wu, J., Jones, F.R. & James, P.F. Continuous fiber reinforced mullite matrix composites by sol–gel processing: Part II Properties and fracture behaviour. Journal of Materials Science 32, 3629–3635 (1997). https://doi.org/10.1023/A:1018630429960

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