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The crystallization mechanism in high strength glass‐ceramics
Author(s) -
Doenitz F.D.,
Vogel W.
Publication year - 1980
Publication title -
kristall und technik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0023-4753
DOI - 10.1002/crat.19800150804
Subject(s) - crystallization , materials science , spinel , precipitation , chemical engineering , phase (matter) , amorphous solid , ceramic , quartz , glass ceramic , mechanism (biology) , non blocking i/o , nickel , mineralogy , metallurgy , crystallography , chemistry , philosophy , physics , biochemistry , organic chemistry , epistemology , meteorology , engineering , catalysis
The addition of NiO to a MgOAl 2 Al 2 O 3 SiO 2 basic glass has an influence on the phase separation and crystallization mechanism. The differentiation of the components already detectable in the amorphous state continues in the crystallization process of the nickel‐rich glasses. The formation of NiAl‐spinel in the bulk restricts the precipitation of high quartz crystals to the skin. The result is a high strength glass‐ceramic with clearly distinguishable bulk and surface regions.