Naslov
Rheological properties of aqueous alumina suspensions

Autori
Majić Renjo, Marijana ; Lalić, Marijo ; Ćurković, Lidija ; Matijašić, Gordana

Izvornik
Materialwissenschaft und Werkstofftechnik (0933-5137) 43 (2012), 11; 979-983

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
alumina ceramics ; viscosity ; flow curves ; polyvinyl alcohol

Sažetak
The aim of the present work was to investigate rheological behaviour of alumina suspensions, considering different amounts of polyvinyl alcohol (PVAL) as a binder. Three different aqueous suspensions were prepared, containing 60, 70 and 80 wt.% of alumina powder. Spinel was added as a sintering agent and Darvan 821-A as a dispersant, in an amount of 0.08 and 0.4 wt.% of dry powder weight, respectively. The alumina suspensions flow curves were recorded and fitted satisfactorily to the power law, Herschel-Bulkley and Bingham models. Obtained results indicate that apparent viscosity of alumina suspensions increases with increasing Al2O3 and polyvinyl alcohol amount.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo, Strojarstvo, Temeljne tehničke znanosti

POVEZANOST RADA