抄録
One-way sliding experiments were performed on a single crystalline MgO rider against a flat sapphire surface or vice versa, and from which, the frictional shear deformation of MgO was described based on conventional theories of friction While the emprical shear strength to hardness ratio for metals is 0.2-0.3, that of a MgO crystal and some other brittle solids, determined from the present test, is 0.04-0.1. The one-way sliding test provides us with a simple and versatile method for evaluating the shear strength of brittle solids.
