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Effect of Pore Characteristics in Slip Cast Alumina on Glass Infiltration and Mechanical Properties of the Composites

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Abstract:

Development of alumina/glass composites with minimal residual porosity and superior mechanical properties requires systematic studies on glass infiltration into porous alumina. This work has examined the effect of alumina particle size and the resulting pore size distribution on glass infiltration. Samples were prepared by slip‐casting a coarser alumina powder and blends of the coarse (d 50 ~ 3.4 μm) and a finer (d 50 ~ 0.7 μm) alumina powder. After presintering (1200°C) and following a single cycle of infiltration (1100°C), the sample with 50:50 (wt%) coarse and fine alumina showed highest flexural strength. Improvement in flexural strength could be imputed to the better glass infiltration.

Document Type: Research Article

DOI: https://doi.org/10.1111/j.1744-7402.2011.02691.x

Publication date: 2012-05-01

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