The Effects of heating and devitrification on the estructure and biological activity of aluminosilicate refractory ceramic fibres

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      <subfield code="a">The Effects of heating and devitrification on the estructure and biological activity of aluminosilicate refractory ceramic fibres</subfield>
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      <subfield code="a">Three grades of ceramic fibre have been examined for their composition, structures and biological effect in several in vitro assay systems. The fibres were examined in the 'as-manufactured' state and after heating at 1200 and 1400ºC. Devitrification of the fibres at 1200ºC probably gave mullite crystals on the surface and caused the formation of the high-temperature form of cristobalite and, in zirconia grade fibres, the high-temperature, tetragonal form of zirconia as well</subfield>
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      <subfield code="g">nº 2, April 1992 ; p. 115-129</subfield>
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