KAPLAN, Mustafa Sakarya University - Engineering Faculty - Department of Metallurgical and Materials Engineering, Turkey , EBEOĞLUGİL, Mehmet Faruk Dumlupinar University - Engineering Faculty - Department of Material and Ceramic Engineering, Turkey , BİRLİK, Işıl Dokuz Eylul University - Engineering Faculty - Department of Metallurgical and Materials Engineering, Turkey , YİGİT, Recep Dokuz Eylul University - Izmir Vocational School, Center for Production and Applications of Electronic Materials (EMUM) - Department of Technical Programs, Turkey , ÇELİK, Erdal Dokuz Eylul University - Engineering Faculty, Center for Production and Applications of Electronic Materials (EMUM) - Department of Metallurgical and Materials Engineering, Turkey , AVCİ, Eşref Yalova University - Engineering Faculty - Department of Chemical Processes Engineering, Turkey

High Temperature Yb2O3-ZrO2 Insulation Coatings on Ag Tapes for Magnet Technology

27681

In this study, synthesis and characterization of high temperature Yb2O3–ZrO2 insulation coatings on Ag substrate were investigated for magnet technologies. The produced powders and coatings were characterized by using DTA-TG, FTIR, XRD, SEM-EDS, refractometer, spectrophotometer and empendance machines. The DTA/TG result indicates three-stage decomposition for amorphous Yb2O3–ZrO2 composites. FTIR studies revealed that heat treated powders indicate several absoption bands corresponding to O-H, carboxyl and oxide groups. Though ZrO2 phase present in the structures with high intensity, Yb3O2 phase possessess low intensity peak. A regular surface morphology generally forms once Yb2O3 content increase in ZrO2 from 0 mole % to 12 mole %. The refractive indexes of Yb2O3–ZrO2 coatings were found to be in the range of 1.3539 and 1.3655. The film thicknesses of all coatings generally increased from 0.50 μm to 1.20 μm according to number of dipping. Optical band gap values of Yb2O3–ZrO2 coatings are approximately 3,014 eV. Empedance values of ZrO2 and Yb2O3-ZrO2 coatings were measured as 2.52 ohms and 2.51 ohms, respectively.

117

Sol , gel , Yb2O3 , ZrO2 , Insulation , Magnet technology

Afyon Kocatepe University Journal Of Science an‎d Engineering

128