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Quench Hardness Anisotropy of Rhombohedral Crystals. Sodium Nitrate
Author(s) -
Joshi D. R.,
Pandya J. R.
Publication year - 1993
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170280116
Subject(s) - knoop hardness test , anisotropy , sodium nitrate , quenching (fluorescence) , materials science , indentation hardness , cleavage (geology) , atmospheric temperature range , composite material , crystallography , mineralogy , analytical chemistry (journal) , chemistry , metallurgy , thermodynamics , fluorescence , microstructure , optics , physics , fracture (geology) , chromatography
Abstract The effects of quenching temperature and orientation of Knoop indenter on microhardness of cleavage planes of synthetic sodium nitrate crystals are studied for the range of applied loads (20–160 g) in the high load region. Phenomenological approach was followed to obtain an empirical relation connecting Knoop hardness number, orientation, and quenching temperature. Anisotropic indices are also determined. The implications are discussed.