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http://dx.doi.org/10.4191/kcers.2018.55.5.05

Efficacy of Ag-CuO Filler Tape for the Reactive Air Brazing of Ceramic-Metal Joints  

Kim, Myung Dong (School of Materials Science and Engineering, Yeungnam University)
Wahid, Muhamad FR (School of Materials Science and Engineering, Yeungnam University)
Raju, Kati (Energy Efficiency and Materials Research Division, Korea Institute of Energy Research)
Kim, Seyoung (Energy Efficiency and Materials Research Division, Korea Institute of Energy Research)
Yu, Ji Haeng (Energy Efficiency and Materials Research Division, Korea Institute of Energy Research)
Park, Chun Dong (Energy Efficiency and Materials Research Division, Korea Institute of Energy Research)
Yoon, Dang-Hyok (School of Materials Science and Engineering, Yeungnam University)
Publication Information
Journal of the Korean Ceramic Society / v.55, no.5, 2018 , pp. 492-497 More about this Journal
Abstract
This paper reports the efficacy of tape casting using an Ag-10 wt% CuO filler for the successful joining of a sintered $Ce_{0.9}Gd_{0.1}O_{2-{\delta}}-La_{0.7}Sr_{0.3}MnO_{3{\pm}{\delta}}$ (GDC-LSM) ceramic with a SUS 460 FC metal alloy by reactive air brazing. The as-prepared green tape was highly flexible without drying cracks, and the handling was easy when used as a filler material for reactive air brazing. Heat treatment for the GDC-LSM/SUS 460 FC joint was performed at $1050^{\circ}C$ for 30 min in air. Microstructural observations indicated a reliable and compact joining. The room temperature mechanical shear strength of the as-brazed joints was $60{\pm}8MPa$ with a cohesive failure. The flexural strength of joints was measured from room temperature up to $850^{\circ}C$, where the strength retention revealed to be almost 100% at $500^{\circ}C$. However, the joints showed a degradation in strengths at 800 and $850^{\circ}C$, exhibiting strength retentions of 57% and 37%, respectively.
Keywords
Tape casting; Reactive air brazing; Joining; Microstructure; Shear strength;
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Times Cited By KSCI : 2  (Citation Analysis)
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