ABSTRACT
A study was conducted to determine the effect of low amplitude slip on surface damage for ceramic-ceramic and ceramic-metal combinations. The test arrangement consisted of a stationary ball loaded against a flat disk. An external drive imparted a twisting motion to the flat, producing slip amplitudes from 0.1 to 10 f.Lm at the periphery of the contact. In some tests the influence of surface fatigue was examined by applying a rocking motion to the flat, to simulate oscillatory rolling without appreciable slip. Material combinations studied included silicon nitride-silicon nitride, silicon nitride-aluminum oxide, aluminum oxide-aluminum oxide, and silicon nitride-AISI 52100 steel. Damage charactelistics are desclibed and compared for each material combination.
