Method of determining pore volume distribution of a powder sampl

Details Method of determining pore volume distribution of a powder sampl Method of determining pore volume distribution of a powder sampl

1978-03-15

1979-10-09

Myracle, Jerry W.

Measuring and testing

With fluid pressure

Porosity or permeability

G01N 1508

Patent

active

041701291

ABSTRACT:
As understood, the effectiveness of using mercury penetration or intrusion into a powder sample to measure the pore volume distribution thereof is based on negative capillarity, i.e. that a porous solid will repulse a non-wetting liquid, such as mercury, except as the mercury is forced into the pores thereof by pressure. Whereas in the prior art the mercury is intruded into the powder sample at pressures in an ascending order, but with gaps therebetween and thus according to a "discontinuous" pressure pattern, the within inventive method practices the mercury intrusion technique according to an ascending pressure pattern that is "continuous". The pore volume distribution curve produced by the within inventive method is thus more accurate than that of prior art data-gathering methods, since it is produced without interpolation between curve-plotting data points.

REFERENCES:
patent: 3073357 (1963-01-01), Hampton
patent: 3199341 (1965-08-01), Heuer, Jr. et al.
patent: 3388586 (1968-06-01), Golmard et al.

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