Premium
Heat Treatments as a Method of Protection for a Ceramic Fiber—Glass Matrix Composite
Author(s) -
Wetherhold Robert C.,
Zawada Larry P.
Publication year - 1991
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1991.tb07821.x
Subject(s) - materials science , composite material , embrittlement , composite number , ceramic , ceramic matrix composite , glass fiber , fiber , matrix (chemical analysis) , thermal , infiltration (hvac) , thermodynamics , physics
Thermal exposure in air has been shown to embrittle a ceramic fiber‐glass matrix composite by the infiltration of oxygen to the fiber‐matrix interface. Samples exposed at sufficiently high temperatures demonstrate less embrittlement and less strength loss than samples exposed at intermediate temperatures, because of a material flow which seals the surface. It is shown that the protection against embrittlement provided by a short, high‐temperature thermal treatment remains in force for materials subsequently exposed to intermediate temperatures under both loaded and unloaded conditions.