Abstract
50Bi2O3-30B2O3-20ZnO (mol.%) glass was designed and prepared in our previous work. On the basis of preliminary work on DSC analysis, the crystallization behavior of the glass was further investigated in the present work. The results showed that Bi38ZnO58 and Bi45BO69 crystals were formed in the glass during the heating process. Subsequently, ferrite ceramics were then brazed at one of the peak temperatures, 551 °C. The results showed that Bi38ZnO58 and Bi45BO69 crystals were formed in the joint domain, and the joint possessed a shear strength value of 76.6 MPa.
Highlights
Ferrite ceramics have been widely used for a variety of microwave applications [1]
Crystallization is crucial to the brazing process of ferrite to ferrite and the properties of corresponding joints [10]; we aim to investigate the crystallization behavior of 50Bi2 O3 -30B2 O3 -20ZnO glass
The DCS curve for the glass has been presented in our previous work [9]
Summary
Ferrite ceramics have been widely used for a variety of microwave applications [1]. In these applications, some devices with complex shapes are needed. Reliable joining technologies have become necessary and are vital method for breaking the restrictions of the manufacturing processes for ferrite ceramics. Brazing technology employing glass as a braze has been becoming a potential candidate. Most glass present good mechanical properties and excellent wettability on the surfaces of various ceramics [2,3,4,5,6,7,8]. In order to protect devices from excessive high temperatures, a relatively low joining temperature is desired in ferrite connection
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