The Authors Declare that They Have No Known Competing Financial Interests or Personal Relationships that Could Have Appeared to Influence the Work Reported in this Paper

Ceramics and metal joining has been widely applied in aerospace, dental implants as well as other electronic packaging industry to fabricate multifunctional components. In this sturdy, the 35Bi 2 O 3 -50B 2 O 3 -15ZnO (mol.%) glass with low glass transition temperature has been applied as a brazing material to join the ZrO 2 ceramic and Ti-6Al-4V alloy in air. The effect of brazing temperature on the microstructure evolution, mechanical properties and the bonding mechanism of brazed joints were analyzed deeply. The microstructure of the ZrO 2 /glass/Ti-6Al-4V joints and the content of Bi 4 B 2 O 9 , Bi 2 O 3 and Bi 24 B 2 O 39 precipitated crystals in glass were distinctly dependent on the brazing temperature. The reaction product of Bi 4 Ti 3 O 12 was identified in the glass/Ti-6Al-4V interface because of the chemical reaction between oxidated layer of Ti-6Al-4V alloy and glass. No obvious element diffused and chemical reaction at the ZrO 2 ceramic and glass interface. The maximum shear strength of 48.75 MPa was obtained for the ZrO 2 /glass/Ti-6Al-4V joint brazed at 500 ℃ for 20 min, which was mainly attributed to the strengthening of crystalline phase precipitated from glass. Our work demonstrates that the 35Bi 2 O 3 -50B 2 O 3 -15ZnO glass is an effective bonding material to join ZrO 2 ceramic and Ti-6Al-4V alloy under low temperature in air