Glass, Volume 22 |
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Page 59
The attack by H2O vapor is accomplished in three steps : ( 1 ) nonactivated
adsorption with the proportionality c ( ads ) ~ p " ( n > 1 ) and a time dependence
c ( ads ) , = coll – exp ( - kt ) ] , ( 2 ) diffusion - controlled ion exchange , in which
alkali ...
The attack by H2O vapor is accomplished in three steps : ( 1 ) nonactivated
adsorption with the proportionality c ( ads ) ~ p " ( n > 1 ) and a time dependence
c ( ads ) , = coll – exp ( - kt ) ] , ( 2 ) diffusion - controlled ion exchange , in which
alkali ...
Page 108
The first ( or lowtemperature ) peak is normally attributed to stress - induced
mobility of alkali ions ; the second ( or high - temperature ) peak appears to
require the presence of water . Day and Stevels ( 1974 ) demonstrated the
essential role of ...
The first ( or lowtemperature ) peak is normally attributed to stress - induced
mobility of alkali ions ; the second ( or high - temperature ) peak appears to
require the presence of water . Day and Stevels ( 1974 ) demonstrated the
essential role of ...
Page 124
OH group for every five = Si - O - Si = groups or ten Na + ions , while there are
over two water molecules for each alkali ion present . The resonance structure
shown requires too high a concentration of = Si – OH groups . As the water
content is ...
OH group for every five = Si - O - Si = groups or ten Na + ions , while there are
over two water molecules for each alkali ion present . The resonance structure
shown requires too high a concentration of = Si – OH groups . As the water
content is ...
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Contents
Water in Glass | 75 |
Applications | 121 |
Gel Method for Making Glass | 129 |
Copyright | |
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acid addition adsorption alkali alkoxide analysis applied atoms band Bartholomew bond bulk calculated cause Ceram Chem chemical clusters coefficient components composition concentration constant contraction crack crystals curve decrease dependence depth determination developed discussed distribution Doremus effect energy equation et al example expansion experimental failure fatigue fibers formation formed fracture function geometry give given glass surfaces groups heating higher hydrated hydrolysis hydrosilicate important increase influence ions Kamiya layer lead length load lower material mean measured melting metal method mole observed obtained occurs oxide phase Phys possible prepared pressure processes produced propagation properties range ratio reaction region samples seal shown in Fig shows silicate glasses SiO2 soda-lime Solids solution strain strength stress structure studies Table technique temperature thermal tion values vapor viscosity water content