Porous permeable ceramic is prepared from electromelted corundum (EMC) with fineness of about 0.5 mm with added porcelain. Compositions are prepared with different ratios of EMC/porcelain: 99/1, 97/3, 95/5, 93/7, and 90/10. Specimens in the form of bars with a size of 40 × 7 × 6.5 mm are prepared by uniaxial semidry compaction under a pressure of 25 and 50 MPa and fired at 1350 and 1450°C. Specimen open porosity varies from 22 to 30%, and ultimate strength in bending from 1.1 to 9.3 MPa. Porous ceramic is promising for filters and ceramic membrane substrates.
Refractories and Industrial Ceramics – Springer Journals
Published: Apr 19, 2017
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