Pamukkale Univ Muh Bilim Derg. Ahead of Print: PAJES-17981 | DOI: 10.5505/pajes.2024.17981

Investigation of magnesia, zirconia additives and process parameters in Sol-Gel derived alumina ceramic by experiment design method

Emre Yalamaç¹, Hüseyin Adýgüzel², Memnune Murat², Dila Vural², Ali Cihan Çelik^2
1Manisa Celal Bayar University, Faculty of Engineering and Natural Sciences, Department of Metallurgical and Materials Engineering, Manisa
²Inter Abrsaiv R&D Center, Manisa

In this study, the production of corundum ceramic sand by sol-gel method with the addition of different amounts of magnesia and zirconia additives and the process parameter boehmite was examined by the experimental design method. The effects of additive and process parameters on the hardness, single particle compressive strength, density and microstructural properties of the final alumina ceramic sand were investigated. Using boehmite and additives together, the highest single particle compressive strength value of 105.90 N was achieved in sands sintered at 1400°C. Compressive strength test results were grouped by the Tukey method, and in pairwise comparisons of the experiments, both different results and also similar results were observed. In SEM examinations, it was observed that the microstructure of the sands consisted of a closed porous structure with a homogeneous distribution in 100 nm dimensions. Density values were measured as 4.00 g/cm3 in experiment number 9 sintered at 1500°C, where all additives and the amount of boehmite were highest levels. The lowest density values were measured in control experiments sintered at the same temperature.

Keywords: Alumina, Zirconia, Magnesia, Sol-Gel, Single Particle Compressive Strength

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Sol-Jel yöntemiyle alümina seramik üretiminde magnezya, zirkonya katkýlarýnýn ve proses parametrelerinin deney tasarým yöntemiyle incelenmesi

Emre Yalamaç¹, Hüseyin Adýgüzel², Memnune Murat², Dila Vural², Ali Cihan Çelik^2
1Manisa Celal Bayar Üniversitesi, Mühendislik ve Doða Bilimleri Fakültesi, Metalurji ve Malzeme Mühendisliði Bölümü, Manisa
²Inter Abrasiv AR-GE Merkezi, Manisa

Bu çalýþmada, magnezya ve zirkonya katký maddeleri ve proses parametresi böhmitin farklý miktarlarda eklenmesiyle sol-jel yöntemiyle korundum seramik kum üretiminin deney tasarým yöntemiyle incelenmiþtir. Katký ve proses parametrelerinin nihai alümina seramik kumunun sertlik, tek parçacýk basma mukavemeti, yoðunluk ve mikroyapýsal özelliklerine etkisi araþtýrýlmýþtýr. Böhmit ile katkýlarýn birlikte kullanýlmasý 1400°C’de sinterlenen kumlarda tek parçacýk basma mukavemetinde en yüksek 105.90 N deðerine ulaþýlmýþtýr. Basma mukavemeti testi sonuçlarý Tukey yöntemi ile gruplandýrýlmýþ ve deneylerin ikili karþýlaþtýrmalarýnda birbirleri ile faklý olan sonuçlar olduðu gibi benzer sonuç verenlerde gözlenmiþtir. SEM incelemelerinde kumlarýn mikroyapýlarýnýn 100 nm boyutlarda homojen daðýlýmda kapalý gözenekli bir yapýdan oluþtuðu gözlenmiþtir. Tüm katkýlarýn ve böhmit miktarýnýn en yüksek olduðu 1500°C’de sinterlenen 9 nolu deneyde yoðunluk deðerleri 4.00 g/cm3 olarak ölçülmüþtür. En düþük yoðunluk deðerleri ise ayný sýcaklýkta sinterlenen kontrol deneylerinde ölçülmüþtür.

Anahtar Kelimeler: Alümina, Zirkonya, Magnezya, Sol-Jel, Tek Parçacýk Basma Mukavemeti

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