Patent ID: 6719892
Filing Date: 2004-04-13
Classification: B23K,C25F

Abstract:
A process for selective removal of a nickel alloy brazing composition from a nickel-base alloy component, comprising the steps of:providing a brazed assembly comprising nickel-base alloy components joined by nickel alloy brazing composition, wherein said nickel-base alloy components are provided from a material having a nominal composition as follows: CMnSiSCrCoNb + TaMinâ€”â€”â€”â€”14.0â€”0.70Max0.801.000.500.0117.01.01.20NiCuTiAlFeâ€”Min0.70â€”2.250.405.0%Maxâ€”0.502.751.009.0%immersing said assembly in an electrolyte; and applying a potential across said electrolyte at a magnitude wherein said nickel-base alloy components are electrochemically passive and said nickel alloy brazing composition dissolves whereby said brazing composition is removed from said components.