Journal Published Online: 01 January 1995
Volume 23, Issue 1

Indentation Characterization of Silicon Nitride

CODEN: JTEVAB

Abstract

The hardness of hot-pressed silicon nitride ceramics has been measured over a wide range of applied loads, 0.02 to 300 N, for both Vickers and Knoop indenter geometries. The indentation size effect (ISE) was evident for loads less than about 1 N. The Vickers and Knoop hardness values agree provided they are compared at a given penetration of the respective indenter. The influence of the residual stresses of the ceramic surface on the indentation response in the as-machined, polished, and post-annealed state has been investigated. The results are discussed in relation to the characterization of indentation damage in brittle materials and fracture analysis models.

Author Information

Bolse, W
Institute for Advanced Materials, Commission of the European Communities, Petten, The Netherlands II. Physikalisches Institut, Universität Göttingen, Göttingen, Germany
Peteves, SD
Institute for Advanced Materials, Commission of the European Communities, Petten, The Netherlands
Pages: 6
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Stock #: JTE10395J
ISSN: 0090-3973
DOI: 10.1520/JTE10395J