Utjecaj procesnih parametara sinteriranja na gustoću aluminijeve oksidne keramike

master's thesis

• Title (english): Effect of sintering process parameters on density of alumina ceramics
• Author: Martina Eva Tonković
• Mentor: Lidija Ćurković (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2019-01-24, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering

Abstract

U ovom radu oblikovani su uzorci alumijeve oksidne keramike lijevanjem stabilne suspenzije u gipsani kalup. U tu svrhu pripremljena je 70%-tna vodena suspenzija aluminijevog oksida uz dodatak disperzanta Dolapixa CE-64. Vodena Al2O3 suspenzija homogenizirana je u planetarnom kugličnom mlinu. Sirovci su oblikovani lijevanjem suspenzije u gipsani kalup, te sinterirani u električnoj peći. Ispitan je utjecaj tri različita parametra sinteriranja (temperature sinteriranja, brzine ugrijavanja pri sinteriranju te trajanja držanja na temperaturi sinteriranja) na gustoću sinterirane Al2O3 keramike.
Procjena utjecaja tri parametra sinteriranja (temperature sinteriranja, brzine ugrijavanja pri sinteriranju te trajanja držanja na temperaturi sinteriranja) na gustoću uzoraka aluminijeve oksidne keramike provedena je metodom odzivnih površina (eng. Response surface metodology) na osnovi ekperimentalnih podataka dobivenih prema Box-Behnkenovom planu pokusa, uz primjenu programskog paketa Design-Expert 11.

Abstract (english)

Aluminum oxide ceramic samples were made for this thesis from stable suspension, using slip casting method. 70% aqueous suspension of aluminum oxide was made with the addition of dispersant Dolapix CE-64. Aqueous Al2O3 suspension was then homogenized in planetary ball mill. Samples were molded by slip casting using plaster molds, and sintered in electric furnace. Effect of three different sintering parameters (sintering temperature, sintering heating speed and sintering duration) on density of sintered alumina ceramics was tested.
Analysis of the effect of three sintering parameters (sintering temperature, sintering heating speed and sintering duration) on density of aluminum oxide ceramics was performed using response surface methodology, based on experimental data obtained according to Box-Behnken experimental design, using Design-Expert 11 program package.

• Keywords: Al2O3 keramika; sinteriranje; metoda odzivne površine
• Keywords (english): alumina; sintering; response surface method
• Language: croatian
• URN:NBN: urn:nbn:hr:235:809580
• Study programme: Title: Mechanical Engineering; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka strojarstva (magistar/magistra inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Repository: Repository of Faculty of Mechanical Engineering and Naval Architecture University of Zagreb
• Created on: 2019-05-22 23:42:30