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JWJ > Volume 31(6); 2013 > Article
Journal of KWJS 2013 December;31(6) :65-70.
Published online January 21, 2014.
The Effect of the Composition of Metallizing Paste on the Bonding Strength in the Joining of Al2O3 to Cu
Jong-Hyuk Yoon, Hyun Gyoon Park
Department of Advanced Materials Engineering, Korea Polytechnic University, Siheung-Si 429-793, Korea
Correspondence: Jong-Hyuk Yoon  Email:
  Published online January 21, 2014
In joining Alumina to copper plate by Mo-Mn metallizing process, the effects of the composition of metallizing paste on the bonding strength were investigated. The bonding strength increased with increasing Mn amount in the paste up to 20% but followed by the decrease with addition of Mn. The maximum bonding strength reached 50MPa at 20%Mn when heated to 1550℃ for 60minute. The addition of Si to the metallizing powder increased the bonding strength of the joint by enhancing the mechanical bonding between the Alumina and the metallizing layer due to the decrease of layer viscosity with the addition of SiO2. It is thought that MnO reacted with Al2O3 to yield MnAl2O4 spinel, forming a joint.
Keywords: Brazing | Metallizing | Bonding | Al2O3 | Ceramic
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