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Viscosity measuring method of the powder compacting compact and the viscosity measurement equipment of the powder compacting compact, and records the viscosity measuring method of the powder compacting compact computer reading possible record media
Viscosity measuring method of the powder compacting compact and the viscosity measurement equipment of the powder compacting compact, and records the viscosity measuring method of the powder compacting compact computer reading possible record media
PROBLEM TO BE SOLVED: To evaluate and measure with high accuracy the viscosity of a compact derived from press molding of crystallized glass powders or the like. ;SOLUTION: For the compact of crystallized glass, a sample volume correction V' (sample volume correction V' is the volume occupied by the crystallized glass powders of the compact) and a sample deformation rate correction (dh/dt)' (sample deformation rate correction (dh/dt)' is the difference between an apparent sample deformation rate and a sample deformation rate resulting from sintering-induced shrinkage) are determined; for sample displacement, after a temperature region X wherein sintering-induced shrinkage is dominant and a temperature region Y wherein plastic deformation is dominant are separated from each other, the sample volume correction V' and the sample deformation rate correction (dh/dt)' are applied to a GENT equation in the temperature region X wherein sintering-induced shrinkage is dominant, whereas in the temperature region Y wherein plastic deformation is dominant, the sample volume correction V' is employed as the sample volume V in the GENT equation.;COPYRIGHT: (C)2001,JPO
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