Evaluation of Air Permeation Behavior of Porous SiC Ceramics Synthesized by Oxidation‐Bonding Technique. Issue 6 (3rd October 2012)

• Record Type: Journal Article
• Authors: Dey, Atanu; Kayal, Nijhuma; Chakrabarti, Omprakash; Innocentini, Murilo D. M.; Chacon, Welton S.; Coury, José R.
• Is Part Of: International journal of applied ceramic technology. Volume 10:Issue 6(2013:Nov./Dec.)
• Page Start: 1023
• Page End: 1033
• Publication Date: 2012-10-03
• Subjects: Ceramics -- Periodicals; Ceramics -- Technological innovations -- Periodicals; 620.1405
• DOI: 10.1111/j.1744-7402.2012.02847.x
• Languages: English
• ISSNs: 1546-542X

Abstract

<abstract abstract-type="main" id="ijac02847-abs-0001"> <title> <x xml:space="preserve">Abstract</x> </title> <p>Porous SiC ceramics were synthesized by oxidation bonding of compacts of commercial α‐SiC powder at 1300°C. Different volume fractions of petroleum coke powder were used for variation of porosity of ceramics from 36% to 56%. The material exhibited variations of pore size from 3 to 15 μm, flexural strength from 5.5 to 29.5 MPa, and elastic modulus from 3.3 to 27.6 GPa. Air permeation behavior was studied at 26–650°C. At room temperature Darcian (<italic>k</italic>₁) and non‐Darcian (<italic>k</italic>₂) permeability parameters vary from 1.64 to 18.42 × 10⁻¹³ m² and 0.58 to 2.95 × 10⁻⁷ m, respectively. Temperature dependence of permeability was explained from structural changes occurring during test conditions.</p> </abstract>