Title of article
Bridging stresses in sintered reaction-bonded Si3N4 from COD measurements
Author/Authors
Fett، نويسنده , , T. and Munz، نويسنده , , D. and Kounga Njiwa، نويسنده , , A.B. and Rِdel، نويسنده , , J. and Quinn، نويسنده , , G.D.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2005
Pages
8
From page
29
To page
36
Abstract
Crack opening displacement measurements on a sintered reaction-bonded Si3N4 ceramic obtained in bending tests with edge-V-notched specimens were evaluated. A procedure is proposed which allows a straight-forward evaluation of the experimental results in order to obtain the bridging stresses as a function of crack opening displacements. Bridging stresses up to 160 MPa were found acting over a distance of about 0.4 μm. In addition crack profile measurements were performed for Vickers indentation cracks which could approximately be described by use of the bridging relation obtained.
Keywords
fracture , Si3N4 , Toughness and toughening
Journal title
Journal of the European Ceramic Society
Serial Year
2005
Journal title
Journal of the European Ceramic Society
Record number
1407409
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