Određivanje optimalnih parametara sintetiranja Al2O3 keramike

undergraduate thesis

• Title (english): Determination of optimal sintering parameters of Al2O3 ceramics
• Author: Luka Marković
• Mentor: Danko Ćorić (mentor)
• Committee member: Danko Ćorić (predsjednik povjerenstva)
• Committee member: Zoran Kunica (član povjerenstva)
• Committee member: Vesna Alar (član povjerenstva)
• Committee member: Zdenka Keran (član povjerenstva)
• Committee member: Tatjana Haramina (član povjerenstva)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2019-09-26, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering; General Mechanical Engineering (Construction)

Abstract

U radu su korišetni uzorci aluminij oksidne keramike koji su oblikovani lijevanjem stabilne suspenzije u gipsani kalup. U tu svrhu je napravljena 70%-tna vodena suspenzija aluminij oksida uz dodatak disperzanta (Dolapix CE-64).
Sirovci su sinterirani u električnoj peći na temperaturama od 1600, 1625 i 1650 °C u trajanju od 2, 4 i 6 sati u svrhu određivanja kako parametri sinteriranja djeluju na neka mehanička svojstva aluminij oksidne keramike, u ovom slučaju na gustoću i tvrdoću.
Sinteriranim uzorcima nakon toga je izmjerena gustoća, te su zaliveni u polimernu matricu, pripremljeni, odnosno brušeni i polirani u svrhu mjerenja tvrdoće. Na temelju svih provedenih mjerenja i analize rezultata odabrani su optimalni parametri sinteriranja ispitivane aluminij oksidne keramike.

Abstract (english)

Aluminium oxide ceramic samples were made for this thesis from stable suspension using slip casting method (casting suspension into plaster molds). For this purpose 70% aqueus suspension of aluminum oxide was made with the addition of Dolapix CE-64 dispersant.
Samples were sintered in an electric furnace on temperatures of 1600, 1625 and 1650 °C during the course of 2, 4 and 6 hours for the purpose of determining how these two sintering parameters make a difference to various mechanical properties. This thesis covers density and hardness.
After the sintering, the density of the samples was measured, samples were poured into a polimeric matrix, sanded and polished in order to measure hardness. Based on all measurements and after analysing the results the optimal aluminium oxide ceramic simtering parameters were chosen.

• Keywords: aluminij oksidna keramika; temperatura sinteriranja; vrijeme sinteriranja; gustoća; tvrdoća
• Keywords (english): aluminum oxide ceramic; sintering temperature; sintering duration; density; hardness
• Language: croatian
• URN:NBN: urn:nbn:hr:235:771834
• Study programme: Title: Mechanical Engineering; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2019-09-30 09:27:04