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Open AccessFeature PaperCommunication
Fibers 2017, 5(4), 48; doi:10.3390/fib5040048

Composite Oxide Fibres Grown by Internal Crystallisation Method

Institute of Solid State Physics of RAS, 2 Academician Ossypian Str., Chernogolovka Moscow Distr., 142432 Chernogolovka, Russia
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Received: 20 August 2017 / Revised: 16 October 2017 / Accepted: 5 December 2017 / Published: 18 December 2017
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Abstract

The internal crystallisation method (ICM) allows producing bundles containing hundreds and thousands of the fibres of a limited length. It is shown in the present paper that ICM can be used to produce fibres composed of a sapphire matrix and inclusions of calcium hexaaluminate. The fabrication of such composite fibres is described in the present paper. An effect of the calcium hexaaluminate inclusions in sapphire fibres is evaluated by testing model composites with brittle molybdenum matrices. The critical stress intensity factors of composite-fibre/molybdenum-matrix specimens are higher than those of specimens reinforced with sapphire fibres. The model specimens reveal non-linear stress/strain behaviour. The results of this work show the effectiveness of composite fibres as a reinforcement for brittle matrices. View Full-Text
Keywords: ceramic fibre; composites; mechanical testing; fracture toughness; microstructure; internal crystallisation method ceramic fibre; composites; mechanical testing; fracture toughness; microstructure; internal crystallisation method
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Mileiko, S.; Kolchin, A.; Kiiko, V.; Novokhatskaya, N. Composite Oxide Fibres Grown by Internal Crystallisation Method. Fibers 2017, 5, 48.

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