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Quantitative Description of Si3N4 Microstructures

Mucklich, F.; Hartmann, S.; Hoffmann, M. J.; Schneider, G. A.; Ohser, J.; Petzow, G.

Abstract: A new characterization technique for the quantification of spatial parameters of silicon nitride grains is presented. After some theory about the potential attempts to recover stereoscopic parameters from metallographic micrographs, a method is discussed, which transforms the distributions of size and shape parameters of grain sections measured in the micrograph into the distributions of spatial size and shape of the grains. It is based on algorithms of stereology and is valid for regular hexagonal prisms with random size and shape. Nevertheless the theoretical solution can be adapted to various shape assumptions such as different types of prisms and polyhedrons. Conclusions for the mechanical properties demand particular attention to the statistics of the rare large and elongated grains. Some attempts to handle this problem are discussed.

Zugehörige Institution(en) am KIT Institut für Keramik im Maschinenbau (IKM)
Publikationstyp Buchaufsatz
Jahr 1994
Sprache Englisch
Identifikator ISBN: 0-87849-668-8
KITopen ID: 1000007787
Erschienen in Silicon Nitride 93. Hrsg.: M. J. Hoffmann
Verlag Transtech Publ., Aedermannsdorf
Seiten 465-469
Serie Key engineering materials ; 89/91
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