Author/Authors :
ERCENK, Ediz Sakarya Üniversitesi, Esentepe Kampüsü - Mühendislik Fakültesi - Metalurji ve Malzeme Mühendisliği Bölümü, Turkey , DEMİRKIRAN, A. Şükran Sakarya Üniversitesi, Esentepe Kampüsü - Mühendislik Fakültesi - Metalurji ve Malzeme Mühendisliği Bölümü, Turkey , ŞEN, Şaduman Sakarya Üniversitesi, Esentepe Kampüsü - Mühendislik Fakültesi - Metalurji ve Malzeme Mühendisliği Bölümü, Turkey , ŞEN, Uğur Sakarya Üniversitesi, Esentepe Kampüsü - Mühendislik Fakültesi - Metalurji ve Malzeme Mühendisliği Bölümü, Turkey , YILMAZ, Şenol Sakarya Üniversitesi, Esentepe Kampüsü - Mühendislik Fakültesi - Metalurji ve Malzeme Mühendisliği Bölümü, Turkey
Abstract :
In this study grain growth kinetics of the TiO2-BaO-SiO2 based ceramics produced from BaCO3, TiO2 and SiO2 ceramic powders has been investigated depending on sintering temperature and time. For this purpose, the different powder mixtures were prepared by ball milling technique in deionised water using ZrO2 balls for 20 h. The powders were calcined at 1000°C for 2 h after drying process. Produced powders was mixed 5% polyvinyl alcohol (PVA) and pressed as green body. The samples were sintered at 1175, 1200 and 1225°C for 1-4 h. Atomic force microscope (AFM) images were used for examinations of grain structure and size of the sintered specimens. Grain growth kinetic equation G^n=K.t.exp(-Q/RT) was used for determining of the activation energy of the produced ceramic materials. X-ray diffraction analysis (XRD) showed that the main phases formed in structure were BaTiO3 and Ba2TiSi2O8.
NaturalLanguageKeyword :
“TiO2 , BaO , SiO2 Ceramics” , “Grain Growth” , “Kinetic” , “Activation Energy”
