Optimization on Influencing Factors of Fracture Toughness of Corundum-Mullite Toughened by In Situ Synthesized Mullite Whiskers by Response Surface Methodology

Bin Meng; Jin Hui  Peng

doi:10.4028/www.scientific.net/AMR.581-582.819

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 581-582Optimization on Influencing Factors of Fracture...

Optimization on Influencing Factors of Fracture Toughness of Corundum-Mullite Toughened by In Situ Synthesized Mullite Whiskers by Response Surface Methodology

Abstract:

The corundum-mullite was toughened by in-situ synthesized mullite whiskers and the process parameters influencing the fracture toughness of corundum-mullite, such as sintering temperature, addition amount of AlF₃ and V₂O₅, were optimized by means of response surface method. Corundum-mullite with fracture toughness of 9.44 MPa.m^-1/2 could be obtained under the optimized conditions, i.e. sintering temperature of 1400°C, 4.8 wt.% of AlF₃ and 5.8 wt.% of V₂O₅. The results showed that it was feasible to prepare corundum-mullite toughened by in-situ synthesized mullite whiskers by the optimized parameters. In addition, an accurate model based on response surface method was proposed to predict the experimental results.

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Periodical:

Advanced Materials Research (Volumes 581-582)

Pages:

819-822

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.581-582.819

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Online since:

October 2012

Authors:

Bin Meng, Jin Hui Peng

Keywords:

Corundum-Mullite, In Situ Synthesized Mullite Whiskers, Response Surface Methodology (RSM)

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