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Novel route to alumina and aluminate interlayer coatings for SiC, carbon, and Kevlart® fiber-reinforced ceramic matrix composites using carboxylate–alumoxane nanoparticles

Published online by Cambridge University Press:  31 January 2011

Rhonda L. Callender  and
Andrew R. Barron
Rhonda L. Callender
Affiliation:
Department of Chemistry, Department of Mechanical Engineering and Materials Science, and Center for Nanoscale Science and Technology, Rice University, Houston, Texas 77005
Andrew R. Barron
Affiliation:
Department of Chemistry, Department of Mechanical Engineering and Materials Science, and Center for Nanoscale Science and Technology, Rice University, Houston, Texas 77005
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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.

Type
Articles
Information
Journal of Materials Research , Volume 15 , Issue 10 , October 2000 , pp. 2228 - 2237
Copyright
Copyright © Materials Research Society 2000

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