Journal ArticleDOI
Compression Strength of Porous Sintered Alumina and Zirconia
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TLDR
In this article, the influence of controlled porosity on the compression strength of sintered pure alumina and of partly magnesia-stabilized zirconia was investigated.Abstract:
The influence of controlled porosity on the compression strength of sintered pure alumina and of partly magnesia-stabilized zirconia was investigated. Bodies with porosities ranging from approximately 3 to 60% by volume were prepared utilizing hydrogen peroxide to induce pore formation. Cubes of approximately 1.2-cm, unit length were used in testing for compression strength at room temperature. The spatial arrangement of pores in sintered alumina was found to exert an influence, inasmuch as bodies with pores lined parallel to the pressure direction revealed a higher strength than bodies of the same porosity but with pores lined mainly perpendicular to this direction. It was found that an increase of porosity by 10 volume % decreased the strength of both sintered alumina and sintered zirconia by half of their initial respective values.read more
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Handbook of SiC properties for fuel performance modeling
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Effect of Porosity on Physical Properties of Sintered Alumina
Robert L. Coble,W. D. Kingery +1 more
TL;DR: In this paper, the effects of porosity and temperature on strength, elastic modulus, modulus of rigidity, and coefficient of thermal expansion were investigated for a continuous solid phase with isolated pores.
Journal ArticleDOI
Dependence of Mechanical Strength of Brittle Polycrystalline Specimens on Porosity and Grain Size
TL;DR: An empirical equation form, approximating the apparent dependence of the strength of brittle polycrystalline specimens on the combined effect of porosity and grain size, has been developed from concepts and data in the literature as discussed by the authors.