Diffusion Treatable BNi?2 NickelBrazing Powder
BNi?2 nickel-based brazing powder is designed for vacuum orinert-atmosphere brazing. It is widely used for joining stainlesssteel, nickel superalloys and cemented carbides.
1. Pre-brazing Preparation
1.1 Surface treatment: Grind faying surfaces to remove oxide films.Ultrasonically clean parts with acetone or ethanol to eliminategrease and contaminants, then fully dry. Do not touch jointsurfaces with bare hands.
1.2 Joint clearance: Recommended gap 0.03–0.10 mm. Excessive gapcauses brittle intermetallic phases; too narrow gap prevents properwetting and capillary flow.
1.3 Fixture: Use molybdenum or ceramic fixtures to maintain stablegap and oid reaction with base metals.
Common sizes: -200 mesh, -300 mesh, -325 mesh, or customizedmicrons
5. Typical Applications
Aerospace:? jet engine structural members, turbine components,compressor vanes, stators, honeycomb structures, seals
Energy & turbines:? gas turbine parts, heat exchangers, EGRcoolers, nuclear e outside the core
Stainless steel & superalloy joining:? austenitic/martensiticstainless steel, Inconel, Hastelloy, cobalt alloys
Cutting tools & wear parts:? brazing diamond segments, tungstencarbide inserts, cemented carbide tools
Automotive & e-mobility:? turbocharger parts, stainlesscooling-system components, li plates, heat-exchangerassembliesRite Material
3. Key Properties
Melting range:? Solidus 971 °C (1780 °F), Liquidus 999–1000 °C(1830–1832 °F)?
Brazing temperature:? typically 1010–1175 °C (1850–2150 °F); commonproduction range 1060–1120 °C?
Narrow melting range? → good process control, less base-metaloverheating
Excellent wettability and capillary flow? in vacuum, argon, or dryhydrogen atmospheres
High joint strength? at room and elevated temperatures
Good oxidation resistance? up to ~980 °C (1800 °F)
Common sizes: -200 mesh, -300 mesh, -325 mesh, or customizedmicrons
5. Typical Applications
Aerospace:? jet engine structural members, turbine components,compressor vanes, stators, honeycomb structures, seals
Energy & turbines:? gas turbine parts, heat exchangers, EGRcoolers, nuclear e outside the core
Stainless steel & superalloy joining:? austenitic/martensiticstainless steel, Inconel, Hastelloy, cobalt alloys
Cutting tools & wear parts:? brazing diamond segments, tungstencarbide inserts, cemented carbide tools
Automotive & e-mobility:? turbocharger parts, stainlesscooling-system components, li plates, heat-exchangerassembliesRite Material
High Strength Brazed Joint BNi?2 Powder Rite Material