Abstract
Bismuth borate zinc glass is getting increasing attention for Al2O3 ceramics joining due to its low melting temperature. In this paper, 50Bi2O3-30B2O3-20ZnO (mol. %) glass was successfully prepared through melt quench method. Moreover, the glass exhibited excellent wettability on Al2O3 surface via contact reaction wetting. Therefore, Al2O3 ceramics were brazed at different temperatures. Crystallization performed adverse effect on Al2O3/Al2O3 joints. As the temperature increasing, ZnAl2O4 particles and ZnAl2O4 interfacial reaction layer generated in the glass seam and at Al2O3/glass braze interface. Consequently, a ZnAl2O4 reinforced Al2O3/glass braze/Al2O3 joint with a maximum value for shear strength of 72 MPa was obtained.
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