The thermal-expansion behaviour of a metallic-glass ribbon-reinforced glass-ceramic-matrix composite was studied. The coefficient of thermal expansion of such composites measured in the longitudinal direction was correlated with the volume fraction, the length and the width of the ribbon reinforcements. The experimentally measured values of the thermal-expansion coefficients were found to be in good agreement with a modified Schapery's equation.
Formation of an oxide layer on the ribbon surface and other related phenomena occurring at elevated temperatures were also found to affect the thermal expansion of such composites, and these factors were accommodated into Schapery's equation by incorporating an empirical constant.
Oxide Polymer Thermal Expansion Elevated Temperature Oxide Layer
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