Portal de Periódicos da CAPES

Microstructure of 96% Alumina Ceramics: I, Characterization of the As‐Sintered Materials

1990; Wiley; Volume: 73; Issue: 12 Linguagem: Inglês

10.1111/j.1151-2916.1990.tb04274.x

1551-2916

Cynthia A. Powell‐Doǧan, A. H. Heuer,

Metallic Glasses and Amorphous Alloys

Characterization of the microstructure and microchemistry of a group of commercial 96% Al 2 O 3 ceramics, using analytical and conventional electron microscopy techniques, was conducted. A continuous glassy grain‐boundary phase was found in all samples, in addition to a number of intragranular and intergranular crystalline second phases; the phases present depended on the original boundary‐glass composition. The faceted nature of many of the Al 2 O 3 ‐glass interfaces was studied and is thought to be an equilibrium structure.