The mechanism of sliding on ice and snow The preceding paper has shown that the sliding friction bet ween metals decreases in a regular manner as the temperature is raised, provided that the chemical nature of the surface layers remains unchanged The behaviour of the friction at temperatures near the melting-point was not investigated Most metals become very soft at these high temperatures, and the irregularities which normally
Evans, A. G. and Charles, E. A. (1976) Fracture Toughness Determination . . . Photographic evidence of arrest of crack growth by titanium particles was obtained, demonstrating that the reinforcement mechanism of these materials is due to the deflection of cracks owing to metallic bridges formed by the titanium used as alumina strengthener