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Knoop Microhardness Anisotropy of Single‐Crystal Cassiterite (SnO 2 )
Author(s) -
Li Hong,
Bradt Richard C.
Publication year - 1991
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1991.tb04342.x
Subject(s) - knoop hardness test , anisotropy , indentation hardness , materials science , single crystal , mineralogy , cassiterite , condensed matter physics , composite material , crystallography , metallurgy , optics , microstructure , chemistry , physics , tin
The Knoop microhardness anisotropy of single‐crystal cassiterite (SnO 2 ) was measured on the (100), (110), (001), and (111). That anisotropy is depicted as the microhardness profiles for those planes. The results are addressed first in terms of the elastic anisotropy of SnO 2 and then on the basis of the effective resolved shear stress (ERSS), the latter an approach initially advanced by Brookes and co‐workers. The load dependence of the Knoop microhardness is also evaluated in terms of the classical Meyer's law for which it is demonstrated that the Meyer's law coefficient and Meyer's law exponent are related.