The vacuum induction melting gas atomization method is adopted for the preparation of PdNiCrBSi alloy solder powder for the demand of solder alloy powder for brazing in aerospace,the study focuses on the physical properties,microtopography,and structure of this powder,as well as the brazing properties on high-temperature alloy base materials.Results show:that PdNiCrBSi powder is mainly spherical,it is composed of many phases,and it has good wetting-spreading ability and brazability on GH3536 base metal.The maximum pulling force of the welding joint is 38.2～38.9 kN,the shearing strength of the brazing joint is 382～389 MPa of this welded solder,which is close to the strength of base metal,and the fracture way is brittle fracture.
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