Near-net-shape Processing of Metal-ceramic Composites by Reactive Metal Penetration
Metal-ceramic composites were made to near-net shape by reacting phase-pure mullite and mullite-glass preforms with molten Al using a reactive metal penetration process. Conversion of the two ceramic preforms to Al2O3/Al composites was accompanied by a 0.32% volume expansion and a 1.42% volume shrinkage, respectively. Molar volume and density calculations made assuming a net-shape reaction estimate ∼17 and ∼27 vol% Al to be present in the two composites after reaction. Results from quantitative stereology measurements used to quantify the concentration of metal in the reactively formed composites validate the calculations.
W. Fahrenholtz et al., "Near-net-shape Processing of Metal-ceramic Composites by Reactive Metal Penetration," Journal of the American Ceramic Society, Wiley-Blackwell, Sep 1996.
The definitive version is available at http://dx.doi.org/10.1111/j.1151-2916.1996.tb09005.x
Materials Science and Engineering
Article - Journal
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