TY  - JOUR
T1  - STOKİYOMETRİK OLMAYAN NBT-ST SERAMİKLERİNİN ELEKTRİKSEL ÖZELLİKLERİNE SİNTERLEME YARDIMCISI CuO KATKISI ETKİSİNİN İNCELENMESİ
TT  - INVESTIGATION OF THE EFFECT OF CuO SINTERING AID ON THE ELECTRICAL PROPERTIES OF NON-STOICHIOMETRIC NBT-ST CERAMICS
AU  - Kaya, Mustafa Yunus
AU  - Yaldiz İnce, Gülbeniz
PY  - 2024
DA  - December
Y2  - 2024
DO  - 10.31796/ogummf.1542806
JF  - Eskişehir Osmangazi Üniversitesi Mühendislik ve Mimarlık Fakültesi Dergisi
JO  - ESOGÜ Müh Mim Fak Derg
PB  - Eskişehir Osmangazi Üniversitesi
WT  - DergiPark
SN  - 2630-5712
SP  - 1526
EP  - 1536
VL  - 32
IS  - 3
LA  - tr
AB  - Son yirmi yıllık süreçte, elektromekanik cihazlarda, enerji hasadı ve enerji depolama uygulamalarında yaygın kullanıma sahip kurşun zirkonat titanat ve türevi seramiklere alternatif olarak kurşun içermeyen piezoseramiklerin araştırılması ve geliştirilmesi üzerine çok sayıda çalışma yapılmıştır. Bu araştırmalar içerisinde sodyum bizmut titanat (Na0.5Bi0.5TiO3-NBT) esaslı seramikler ve morfotropik faz sınırı (MFS) kompozisyonları sergiledikleri elektriksel özellikler ile öne çıkmaktadır. Bu çalışmada, NBT seramik bileşimi stronsiyum titanat (SrTiO3-ST) ile modifiye edilmiştir. [Na0,5Bi0,5TiO3]0,75[Sr1-xTiO3-x]0,25-NBT-SnT (x=0,25) kimyasal formülünce stokiyometrik olmayan seramik kompozisyonu katı hal kalsinasyon yöntemiyle sentezlenmiş ve CuO katkısının sinterleme performansı ve özellikleri üzerine etkisi incelenmiştir. Sentezleme işlemi sonrasında psedokübik simetride NBT-SnT fazının yüksek oranda oluştuğu görülmüştür. Sinterleme yardımcısı CuO katkısı miktarına bağlı olarak sinterleme işleminde ikincil faz oluşumu gözlenmiştir. En yüksek yoğunlaşma oranı %0,5 CuO katkılı seramiklerde 1200 °C’de 3 saat sinterleme ile elde edilmiştir. Bu seramikler için 10 kHz frekansında dielektrik sabiti (K) 570 ila 1300 arasında, dielektrik kayıp (tan ) değerleri 0,04 ila 0,11 arasında, relaksör ferroelektrik davranışa işaret eden yayınımsallık derecesi () ise 1, 84 ila 1,99 arasında değişmektedir.
KW  - Kurşunsuz Seramik
KW  - Sodyum Bizmut Titatanat
KW  - Ferroelektrik
KW  - CuO Katkı
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UR  - https://doi.org/10.31796/ogummf.1542806
L1  - https://dergipark.org.tr/tr/download/article-file/4187324
ER  -