The Effect of Ti and Sn Contents on the Shear Bonding Strength of Brazing Joint of YSZ to STS430 using Ag Based Filler Metals

Lee, Ki Young; Park, Hyun Gyoon

doi:2014.32.1.66

J Weld Join > Volume 32(1); 2014 > Article

Research Paper

Journal of Welding and Joining 2014;32(1):66-70.
DOI: https://doi.org/10.5781/JWJ.2014.32.1.66 Published online February 27, 2014.

The Effect of Ti and Sn Contents on the Shear Bonding Strength of Brazing Joint of YSZ to STS430 using Ag Based Filler Metals

Ki Young Lee^*, Hyun Gyoon Park^*

Correspondence: Ki Young Lee,
Email: vannis@naver.com

Abstract

In Ti active brazing of YSZ to STS 430 using Ag-Cu Filler Metal, the effect of Ti contents on the shear bonding strength were investigated together with the effect of brazing temperature and holding time. The addition of Ti in Ag-Cu Filler Metal increased the bonding strength up to 4.68% Ti, followed by the decrease with further addition. This seems to be caused by formation of TixOy at the reaction layer. Brazing temperature was optimized at 960℃ among a given temperature ranges. The addion of Sn to Ag-Cu filler metal brought the decrease of its melting temperature its melting temperature without a significant decrease of bonging strength.

Key Words: Active Brazing, Reaction layer, YSZ, STS430, Ag Filler Metal, SOFC