Composite Oxide Fibres Grown by Internal Crystallisation Method

Fibers

Vyacheslav Kiiko¹  Sergei Mileiko¹  Andrew Kolchin¹  Natalia Novokhatskaya¹ 

[1] Institute of Solid State Physics of RAS, 2 Academician Ossypian Str., Chernogolovka Moscow Distr., 142432 Chernogolovka, Russia;

关键词: ceramic fibre;    composites;    mechanical testing;    fracture toughness;    microstructure;    internal crystallisation method;   

DOI  :  10.3390/fib5040048

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown