Selective removal of nickel-based braze alloy from nickel-based

Details Selective removal of nickel-based braze alloy from nickel-based Selective removal of nickel-based braze alloy from nickel-based

1981-02-17

1982-04-13

Tufariello, T.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204140, C25F 500, C25F 300

Patent

active

043246265

ABSTRACT:
Nickel-based braze alloys can be removed from nickel-based metals without damaging the nickel-based metal by a process comprising immersing the nickel-based braze alloy
ickel-based metal composite into an electrolyte solution which will not attack the nickel-based metal at a specified voltage condition. This voltage condition is imposed across the composite and potentiostatically controlled to produce a nickel braze alloy
ickel-based metal current density ratio in the composite which results in etching of the nickel-based braze alloy with no damage to the nickel-based metal. The process has particular utility for removing nickel-based alloy brazed vanes from nickel-based metal shrouds in gas turbine engine stators.

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Metal Industry, Feb. 16, 1945, p. 102.

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