THE GAS PERMEABILITY OF THE POROUS CERAMICS WITH ELECTROFUSION CORUNDUM AND PORCELAIN BINDER The gas permeability of the porous ceramics with electrofusion corundum and porcelain binder

Published in Technique and technology of silicates · Volume 25, Issue 2 · Pages 51–55 · Rubric: MAIN RUBRIC
Received: 21.06.2018 Accepted: 23.06.2018 Published: 25.06.2018 Language of publication: RUS
Authors
Studied permeable materials obtained by selection of the grain compositions filled with electrofusion corun-dum (EFC) (0.5 mm) and a binder of porcelain (PFL-1). Formulations with different filler / binder ratios were studied, by weight: 99/1, 97/3, 95/5, 93/7 and 90/10. Samples in the form of cross members 40x7x5.5 mm and disks with a diameter of 20 mm and a thickness of 5.5 mm were pressed at a pressing pressure of 25 and 50 MPa and fired at 1350 and 1450 ° C. The flexural strength of sintered samples of all compositions was from 1.1 to 9.8 MPa, the open porosity - from 22 to 33%, and the gas permeability coefficient - from 1.53 to 4.33 μm2. Samples are promising for filters and substrates of ceramic membranes.
open porosity, strength, electrofused corundum, a bunch of porcelain, ceramic filters, gas permeability