Aqueous slip casting of translucent magnesium aluminate spinel: Effects of dispersant concentration and solid loading. Issue 8 (1st June 2019)

• Record Type: Journal Article
• Authors: Talimian, Ali; Galusek, Dusan
• Is Part Of: Ceramics international. Volume 45:Issue 8(2019)
• Page Start: 10646
• Page End: 10653
• Publication Date: 2019-06-01
• Subjects: Magnesium aluminate spinel -- Slip casting -- Sintering -- Grain growth; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2019.02.134
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: In the present study, influences of the dispersant concentration and solid loading on the rheological properties of magnesium aluminate spinel suspensions are investigated. Aqueous suspensions of commercial spinel powder were prepared by using a polyelectrolyte dispersing agent up to 5 wt%. The viscosity of suspensions decreases continuously with the increase of dispersant concentration; this enables producing MgAl2 O4 suspensions containing 30 vol% solid-loading (60 wt%). Green bodies with a relative density larger than 50% were produced from the suspensions; translucent spinel was obtained after sintering at 1550 °C for 2 h.