Microstructure of a high strength alumina glass composite

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Microstructure of a high strength alumina glass composite Helga Hornberger and Peter M. Marquis University of Birmingham, School of Dentistry, Biomaterials Unit, St. Chad’s Queensway, Birmingham B4 6NN, United Kingdom

Silke Christiansen and Horst P. Strunk Universit¨at Erlangen-N¨urnberg, Institut f ur ¨ Werkstoffwissenschaften-Mikrocharakterisierung, Cauerstr. 6, 91058 Erlangen, Germany (Received 28 July 1995; accepted 27 December 1995)

The morphology and microstructure of an Al2 O3 glass composite (trade name In-Ceram, Vita Zahnfabrik) were studied using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The composite was produced by infiltration of a lanthanum-based glass throughout a porous Al2 O3 body. This alumina body was formed by three classes of particles differing in size and shape: faceted particles typically