Filaments continuous monocrystalline

Due to their high melting points a-alnmina high performance fibres are widely used in situations subjected to oxidising atmospheres and temperatures above 1400°C. Monocrystalline a-alumina fibres can be obtained provided the fibre axis corresponds strictly to the [001] axis. Such fibres exhibit no creep below a temperature of 1600 °C. At the present time fine, flexible continuous monocrystalfine filaments cannot be produced and so only polycrystalline forms of a-alumina staple fibres are available. A number of routes are available providing a number of different microstructures each with a particular behaviour at high temperatures. ... 

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