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Strength characterization of alumina bioceramics according to the new ISO draft

: Soltesz, U.

Deutsche Glastechnische Gesellschaft -DGG-, Frankfurt/Main:
Bioceramics Vol.2. Proceedings of the 2nd Int.Symp. on Ceramics in Medicine
1989 (Bioceramics 2)
International Symposium on Ceramics in Medicine <2, 1989, Heidelberg>
Fraunhofer IWM ()
Aluminiumoxidkeramik; Biokeramik; biomaterial; Festigkeit; Festigkeitsprüfung; Normung; Prüfmethode

In order to overcome the shortcomings of the usual bending test, in 1987 a new procedure for determining the strength was suggested in the revision draft of the ISO standard for alumina. This so-called concentric-ring-test exhibits several advantages: It is more sensitive and critical and distinguishes better between different surface treatments. This is demonstrated by measurements on two commercially available bioceramics.