Composition Dependence of Internal Friction in Al₂O₃–3Y–ZrO₂ Composites

Abstract

An apparatus was developed for measuring internal friction automatically with high accuracy at high temperatures. The composition dependence of the internal friction in an Al 2 O 3 –3Y–ZrO 2 system was investigated at room temperature using it. The results showed that no cracks were produced in the 3Y–ZrO 2 contents less than 40%, and that an energy absorption peak existed at about 20% 3Y–ZrO 2 content.