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Activation energy shrinkage

Notation To is the initial temperature of the reactive composition Tm is the mold temperature t is solidification (curing) time Qp is the heat of polymerization U is the apparent activation energy of the chemical reactions Sh is shrinkage... [Pg.181]

Stainless steel powder with a mean particle diameter of 50 mm has been compacted to a green density of 58% and sintered in pure H2. The resulting shrinkage measurements are given below. Published diffusion data for this stainless steel show that the activation energies are 225 kJ/mol for surface diffusion, 200 kJ/mol for grain boundary diffusion, and 290 kJ/mol for volume diffusion. Use the data below to determine the mechanism. [Pg.151]

Figure 2-1 Curves for linear shrinkage rate (a) and curves for activation energy (b) in alumina/lead borosilicate glass composites at different programming rates [Ref. 10, 11]. Figure 2-1 Curves for linear shrinkage rate (a) and curves for activation energy (b) in alumina/lead borosilicate glass composites at different programming rates [Ref. 10, 11].
AL/Lq linear shrinkage rate, T absolute temperature, a programming rate, Q sintering apparent activation energy, R gas constant... [Pg.24]

See other pages where Activation energy shrinkage is mentioned: [Pg.221]    [Pg.132]    [Pg.822]    [Pg.38]    [Pg.606]    [Pg.671]    [Pg.38]    [Pg.699]    [Pg.604]    [Pg.865]    [Pg.652]    [Pg.443]    [Pg.877]    [Pg.80]    [Pg.183]    [Pg.788]    [Pg.789]    [Pg.825]    [Pg.443]    [Pg.24]    [Pg.197]    [Pg.658]    [Pg.753]    [Pg.74]    [Pg.189]    [Pg.326]    [Pg.345]    [Pg.38]    [Pg.360]    [Pg.464]    [Pg.706]    [Pg.37]    [Pg.40]    [Pg.255]    [Pg.303]    [Pg.664]    [Pg.233]    [Pg.371]    [Pg.289]    [Pg.109]    [Pg.304]    [Pg.255]    [Pg.362]   
See also in sourсe #XX -- [ Pg.567 ]



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