Ceramography
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Ceramography is the art and science of preparation, examination and evaluation of ceramic microstructures. Ceramography can be thought of as the metallography of ceramics. The microstructure is the st
Fig. 1: Thermally etched 99.9% alumina
Fig. 2: Thin section of 99.9% alumina
Embedded, polished ceramographic sections.
Knoop indention (P=1kg) in 99.5% alumina
Hardness
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In materials science, hardness is a measure of the resistance to localized plastic deformation, such as an indentation or a scratch, induced mechanically either by pressing or abrasion. In general, di
Ceramography
…Grain size, porosity and second-phase content have all been correlated with ceramic properties such as mechanical strength σ by the Hall–Petch equation. Hardness, toughness, dielectric constant and many other properties are microstructure-dependent. The hardness of a material can be measured in many ways. The…
A Vickers hardness tester
A representation of the crystal lattice showing the planes of atoms