Microstructure of 96% Alumina Ceramics: I, Characterization of the As-Sintered Materials |
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| Authors: | Cynthia A. Powell-Doan Arthur H. Heuer |
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| Affiliation: | Department of Materials Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106 |
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| Abstract: | ![]()
Characterization of the microstructure and microchemistry of a group of commercial 96% Al2O3 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 Al2O3-glass interfaces was studied and is thought to be an equilibrium structure. |
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| Keywords: | alumina microstrucure grain boundaries second phases silicates |
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