Transactions of the Japan Society of Mechanical Engineers Series C
Online ISSN : 1884-8354
Print ISSN : 0387-5024
Shear Deformation of Brittle Materials under Sliding Contact : The MgO and Sapphire Pair as a Main Model Material
Yuji ENOMOTO
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1987 Volume 53 Issue 491 Pages 1519-1525

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Abstract

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.

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