Abstract
SiC, carbon, and Kevlart® fibers were coated with carboxylate–alumoxane nanoparticles and their calcium-, lanthanum-, and yttrium-doped analogs; firing to 1400 °C formed uniform aluminate coatings. Optimum processing sequences were determined. Both carboxylate–alumoxane- and ceramic-coated fibers were examined by field emission scanning electron microscopy, microprobe analysis, and optical microscopy. Coatings produced were stable to thermal cycling under air at 1400 °C. Fiber-reinforced ceramic matrix composites were prepared and results from 3-point bend tests for carbon/Kevlar®-fabric-reinforced ceramic matrix composites (CMCs) and carbon-fiber-reinforced CMCs were determined. Flexure strength for carbon-fiber- and carbon/Kevlart®-fiber-reinforced alumina CMCs was determined.
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Callender, R.L., Barron, A.R. Novel route to alumina and aluminate interlayer coatings for SiC, carbon, and Kevlart® fiber-reinforced ceramic matrix composites using carboxylate–alumoxane nanoparticles. Journal of Materials Research 15, 2228–2237 (2000). https://doi.org/10.1557/JMR.2000.0320
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DOI: https://doi.org/10.1557/JMR.2000.0320