Affiliation:
1. Kookmin University
2. Korea Institute of Energy Research
Abstract
A study is made of the damage resistance and strength degradation of nitrided pressureless
sintered (NPS) silicon nitride ceramics. The silicon nitride is prepared by cost-effective NPS process
combining by nitridation and consecutive pressureless sintering. Contact testing with spherical
indenters is used to characterize the damage response. Examination of the indentation sites indicates a
quasi-plastic damage modes are observed. Bend tests on specimens containing quasi-plastic contact
damages reveal those materials to be not susceptible to strength degradation.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
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