1992 Volume 56 Issue 4 Pages 481-486
Effects of H2O in specimen and loading rate on the interfacial shear sliding stress in SiC fiber-reinforced LAS matrix composite have been examined using a micro-indentation technique. The results shows that the interfacial shear sliding resistance depends strongly on the existence of H2O which is contained in the composite. When the sample is completely dried, the measured shear sliding stress is constant within the measured loading rates. However, when the composite contains H2O, the interfacial shear sliding stress decreases at the loading late below 1.5 mN/s and increases at the loading late above 1.5 mN/s in comparison with the interfacial shear sliding stress of the fully-dried composites. In the dried samples, scattering of the shear sliding stress reduces in the experiment using argon atmosphere instead of air.
