Wicking technique for determination of pore size in ceramic materials

Journal Article · Mon Aug 01 04:00:00 EDT 1994 · Journal of the American Ceramic Society; (United States)

DOI:https://doi.org/10.1111/j.1151-2916.1994.tb07125.x· OSTI ID:6889282

Li, Z; Giese, R F; Oss, C.J. van ^[1]; Kerch, H M; Burdette, H E ^[2]

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1. State Univ. of New York, Buffalo, NY (United States)
2. National Inst. of Standards and Technology, Gaithersburg, MD (United States). Ceramics Div.

A technique is described for the measurement of mean pore size in ceramics by wicking. Pore size is derived from the measured rates of capillary rise of several apolar, low-energy liquids of known surface tension through thin slices of porous materials, via the Washburn equation. The use of apolar, low-energy liquids assures that the contact angle [theta] = 0[degree] (and cos [theta] = 1) so that the mean pore radius, R, is the only unknown in the Washburn equation. Pore-size data are presented for two colloidal gel compositions with engineered pore-size distributions. Pore diameters obtained from wicking are found to be smaller than those afforded by mercury porosimetry by a factor of [approximately]2.

• OSTI ID: 6889282
• Journal Information: Journal of the American Ceramic Society; (United States), Journal Name: Journal of the American Ceramic Society; (United States) Vol. 77:8; ISSN 0002-7820; ISSN JACTAW
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
CERAMICS
DATA
EXPERIMENTAL DATA
INFORMATION
MEASURING METHODS
MICROSTRUCTURE
NUMERICAL DATA
PERMEABILITY
PORE STRUCTURE