Bi1,8-xGaxPb0,2Sr2CaCu2Oy Cam Seramiklerin Termal Özelliklerinin İncelenmesi

Yıl 2022, Cilt: 10 Sayı: 1, 86 - 102, 30.03.2022

Şükrü Çavdar , Durak Bulut Selçuk İzmirli , Neslihan Turan Haluk Koralay

https://doi.org/10.29109/gujsc.1057256

Öz

Bu çalışmada, x = 0; 0,025; 0,1; 0,2 oranlarında Bi-Ga kısmi yer değiştirmesinin, Bi1,8-xGaxPb0,2Sr2CaCu2Oy yapısının termal özellikleri üzerindeki etkisi incelenmiştir.
Deneysel çekirdeklenme oranları, sıcaklığın ve kısmi yer değişitirmenin bir fonksiyonu olarak Arvami parametreleri kullanılarak çekirdeklenme teorisi açısından analiz edilmiştir. Bi1,8-xGaxPb0,2Sr2CaCu2Oy yapısında birinci kristallenme piki için aktivasyon enerji değerleri, izotermal olmayan Kissinger, Takhor ve Augis-Bennet yöntemleri kullanılarak hesaplandı. Bi-Ga kısmi yer değiştirmesinin, kütle değişim mekanizmasındaki etkisi oksijen gazı akışında incelendi.

Anahtar Kelimeler

DTA/TG, cam seramik, Avrami parametresi, Termal özellikler

Destekleyen Kurum

Gazi Üniversitesi Bilimsel Araştırma Projeleri Birimi

Proje Numarası

05/2016-05

Investigation of Thermal Properties of Bi1,8-xGaxPb0,2Sr2CaCu2Oy Glass Ceramics

Öz

In this study, the effect of Bi-Ga partial substitution at x = 0,0; 0,025; 0.1; 0,2 on the thermal properties of the Bi1,8-xGaxPb0,2Sr2CaCu2Oy structure. Experimental nucleation ratios were analyzed in terms of nucleation theory using Arvami parameters as a function of temperature and partial displacement. The activation energies of the first crystallization peak in the Bi1,8-xGaxPb0,2Sr2CaCu2Oy structure were calculated using non-isothermal Kissinger, Takhor and Augis-Bennet methods. By using the thermogravimetric analysis (TG) method, the effect of Bi-Ga partial substitution on the mass change mechanism was investigated in oxygen gas flow.

Anahtar Kelimeler

DTA/TG, Glass Ceramics, Avrami parameter, Thermal properties

Proje Numarası

05/2016-05

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