A new brazing method, arc-added glow-discharge br az ing (AGB), was studied in respects of mechanism, technology, application and equ ipment in which the workpiece is directly heated by both ion bombardment of glow discharge and radiation heat of arc discharge. The AGB equipment was manufactured by Taiyuan University of Technology and i t mainly consists of: (1) brazing furnace; (2) vacuum system; (3) power closet; (4) measuring and control system. The heating cycle of brazing was composed of heating speed, brazing temperatu re, heat-shielding time, and cooling speed and determined by brazing parameter such as limit degree of vacuum (Va), work pressure (P), glow voltage ( V), arc current (I), P-V match and brazing time (t). The effect o f brazing parameter on the quality of brazing joints was analyzed and discussed. The heating cycle of brazing was designed according to the material and structu re of the workpiece and the result of their optimization were controlled by a FX 2 industrial PC computer. Many metals or alien metals can be brazed by means of AGB method like steel, cop per, aluminum and stainless steel. However, the dominance of AGB is that non-me tals such as ceramic are brazed in AGB method. In the process of AGB, it is possible to deposit active active metallic elements on ceramic surface by glow discharge metallizing with arc source in which the s pattering deposition goes on with a high speed and can occur at a comparatively low temperature. Si 3N 4 ceramics have been put to test by using the above pro cess. Take the T-shaped joint brazing of Si 3N 4 to 45 # steel as an example (Si 3N 4 is of 13×13×7 mm in vertical position and 45 # steel is 1 mm thic k in horizontal position). After brazing, the compositions at different position s of the brazing fillet have been examined by EDX. EPMA analysis showed the exis tence of TiN on ceramic surface, which was produced by the following reaction: S i 3N 4+4Ti = 4TiN+3Si. TiN is a compound similar to metal, which makes the wet tability of ceramic be greatly improved. Brazed joints of Si 3N 4 ceramics to metal have excellent quality. A new brazing method, arc-added glow-discharge br az ing (AGB), was studied in respects of mechanism, technology, application and equ ipment in which the workpiece is directly heated by both ion bombardment of glow discharge and radiation heat of arc The AGB equipment was manufactured by Taiyuan University of Technology and it mainly consists of: (1) brazing furnace; (2) vacuum system; (3) power closet; (4) measuring and control system. The heating cycle of brazing was composed of heating speed, brazing temperatu re, heat-shielding time, and cooling speed and determined by brazing parameter such as limit degree of vacuum (Va), work pressure (P), glow voltage (V), arc current The effect of brazing parameters was on the quality of brazing joints was analyzed and discussed. The heating cycle of brazing was designed according to the material and structu re of the workpiece and the result of their optimization were controlled by a FX 2 industrial PC computer. Many metals or alien metals can be brazed by means of AGB method like steel, cop per, aluminum and stainless steel. However, the dominance of AGB is that non-me tals such as ceramic are brazed in AGB method . In the process of AGB, it is possible to deposit active active metallic elements on the ceramic surface by glow discharge metallizing with arc source in which the pattering deposition goes with a high speed and can occur at a comparatively low temperature. Si 3N 4 ceramics have been put to test by using the above pro cess. Take the T-shaped joint brazing of Si 3N 4 to 45 # steel as an example (Si 3N 4 is of 13 × 13 × 7 mm in vertical position and 45 # steel After brazing, the compositions at different positions s of the brazing fillet have been examined by EDX. EPMA analysis showed the exis tence of TiN on ceramic surface, which was produced by the following reaction: S i 3N 4 + 4Ti = 4TiN + 3Si. TiN is acompound similar to metal, which makes the wet tability of ceramic be greatly improved. Brazed joints of Si 3N 4 ceramics to metal have excellent quality.