Dynamic fatigue of alumina ceramics in water-containing environment

Alumina ceramics have found wide application in water-containing media being subjected to delayed failure resulting from the stress-enhanced chemical reactions between environment and ceramics. Effect of composition of both the environment and ceramics on delayed fracture of various alumina-base cer...

Full description

Saved in:
Bibliographic Details
Published inCeramics international Vol. 24; no. 6; pp. 421 - 425
Main Authors Barinov, S.M., Ivanov, N.V., Orlov, S.V., Shevchenko, V.Ja
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 1998
Online AccessGet full text

Cover

More Information
Summary:Alumina ceramics have found wide application in water-containing media being subjected to delayed failure resulting from the stress-enhanced chemical reactions between environment and ceramics. Effect of composition of both the environment and ceramics on delayed fracture of various alumina-base ceramics is investigated. A dynamic fatigue technique was utilised with special emphasis on proper choice of the experimental conditions for testing procedure. High-alumina ceramic material is revealed to be more resistant to subcritical crack growth than glass-bonded materials. The behaviour of glass-bonded ceramics is dependent on the composition of glassy grain-boundary phase. The water content in environment affects slightly the crack velocity exponent and influences the mean crack-growth velocity. The results are discussed in terms of the chemical reaction rate.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0272-8842
1873-3956
DOI:10.1016/S0272-8842(97)00030-8