Naslov
SIMULATION MODEL OF CONVENTIONAL SOLID STATE SINTERING OF Al2O3 CERAMICS

Autori
Landek, Darko ; Ćurković, Lidija ; Gabelica, Ivana

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
19th INTERNATIONAL FOUNDRYMEN CONFERENCE, Humans - Valuable Resource for Foundry Industry Development / Dolić, Natalija ; Zovko Brodarac, Zdenka ; Brajčinović, Sandra - Split : Metalurški fakultet Sveučilišta u Zagrebu, 2021, 391-402

ISBN
978-953-7082-39-0

Skup
19th International Foundrymen Conference Humans – Valuable Resource for Foundry Industry Development

Mjesto i datum
Split, Hrvatska, 16.06.2021. - 18.06.2021

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
aluminum oxide ceramics ; sintering ; Archimedesdensity ; FEM model

Sažetak
The paper presents a finite element method (FEM) of solid state sintering of aluminum oxide ceramics in an electric furnace. Alumina green bodies were prepared by slip casting of stable 70 wt.% Al2O3 aqueous suspension in a plaster (gypsum) mold. Dispersant Dolapix CE-64 was used for stabilization of highly concentrated alumina suspension. Sintering of green bodies was performed at temperatures of 1600 C, 1625 C and 1650 C for 2 h, 4 h and 6 h. The FEM model was solved as a nonlinear thermo-mechanical problem with the heating, sintering and cooling phases in the FEM program Comsol Mulitiphysics. The density of the sintered samples was determined by the Archimedes method and compared with the density predicted by FEM simulations. The concordance of numerically predicted and measured density amounts, for the same sintering parameters is 86 %.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo, Strojarstvo, Temeljne tehničke znanosti

POVEZANOST RADA