Abstract
Porous permeable materials of electromelted corundum with fineness of 2 – 3 and 0.5 mm are prepared with a porcelain mix binder. Ratios in filler fractions 2 – 3 and 0.5 mm: 0/95, 35/60, 40/55, 45/50, 50/45, and 95/0. Specimens are compacted under a pressure of 24, 50, and 100 MPa and fired at 1350 and 1450°C. Sintered specimen ultimate strength in bending is from 1.9 to 15.3 MPa, open porosity 17 and 26%, gas permeability coefficient of single-fraction compositions from 1.19 to 3.27 μm2. The porous permeable ceramic material obtained is promising for use in the form of filters and ceramic membrane substrates.
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