1.1 This test method covers the determination of the pore size distribution and porosity of ceramic materials by the method of mercury porosimetry. This test method specifies general procedures that are applicable to many commercial mercury porosimetry instruments. This method is suitable to characterize porous ceramics having pore width in the range of 0.004 µm (4 nm) to ~400 µm, typically. This method measures intrusion/extrusion of mercury both in voids between particles (inter-particle) and in pores within particles (intra-particle).
mercury intrusion; mercury extrusion; Porosimetry; pore volume distribution; pore width; pore diameter; log differential intrusion
Mercury intrusion is frequently used to characterize the pore structure of advanced ceramics. Currently no international standards exist that provide guidance on appropriate analysis methods and parameters specific to advanced ceramic materials. In addition, this method requires special guidance on the safe use of mercury for this type of analysis as no other method has been found that has the ability to characterize porous materials over such a wide range of pore sizes in a single technique. This test method provides such guidance on safe usage of mercury porosimetry, and references publications on safe usage by internationally accredited bodies such as the International Union on Pure and Applied Chemistry. Subcommittee C28.03 therefore feels that it is important to develop and publish this test method.
The title and scope are in draft form and are under development within this ASTM Committee.
Developed by Subcommittee: C28.03
Staff Manager: Jimmy Farrell
Date Initiated: 01-31-2022
Technical Contact: Tony Thornton
Ballot: C28.03 (22-01)
Status: Will Reballot Item