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Unformatted text preview: possible, and (3) the ions cannot to the charges of the two species
Consider the geometry when related to the squareaof their separation
and inversely a small cation is bonded to much larger anion. It will
always be possible to place two anions in contact with the cation, but as shown in
distance. This force pulls the species closer together if
Figure 2.6–1, it may not be possible to place a third anion in contact with the cation
they have opposite charge and pushes them apart if they
have charges of the same sign.
covalent bond A type of primary bond formed
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between two| electronegative elements when their average
number of valence electrons is greater than or equal to 4.
creep Time-dependent deformation that occurs at
relatively high temperatures and low stresses.
crevice corrosion A highly localized form of corrosion
(usually) involving oxygen concentration gradients in
regions where the ﬂow of the electrolyte is limited.
critical ﬁber length The minimum ﬁber
v pg795 Atomic Scale Structures Glossary crystalline material A material th
and repeating atomic or molecular ar
long-range order is established within
Curie temperature The temperatu
ferromagnetic material exhibits param
Czochralski method A process by
crystal of Si of a predetermined orien
from a melt of Si.
deep drawing A process by which
of metal is shaped into a cup by mec
degree of polymerization The num
to form a polymer; the molecular we
divided by the molecular weight of th
degrees of freedom The number o
variables necessary to specify equilib
dendrite A treelike structure in a s
formed due to the pattern of latent he
devitriﬁcation A high-temperature
certain oxide glasses to convert the s
diamagnetic A class of magnetic m
the internal ﬁeld is antiparallel to the
These materials show a weak respons
die bonding A process by which a
chip is bonded to the housing of an e
dielectric constant Ability of a ma
charge when subject to an electric ﬁe
constant normalized to that of vacuu
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