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The fracture behaviour of Chromium‐ and Titanium‐doped sapphire monocrystals
Author(s) -
Müller B.
Publication year - 1984
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.2170190819
Subject(s) - sapphire , materials science , spall , indentation , fracture (geology) , composite material , titanium , fracture toughness , chromium , dopant , doping , metallurgy , optics , optoelectronics , laser , physics
Abstract The influence of chromium and titanium on the fracture behaviour of sapphire crystals was analysed by means of crack indentation pattern, and the critical stress intensity factors for the easiest spalling planes of the sapphire were measured from the crack lengths at the indents. Together with information on the room temperature plasticity of sapphire the results allow conclusions on the influence of the dopants on crystallographic and glass‐like fracture features, respectively.