Method for removing aluminide coatings from nickel or cobalt bas

Details Method for removing aluminide coatings from nickel or cobalt bas Method for removing aluminide coatings from nickel or cobalt bas

1979-12-14

1981-08-04

Caroff, Marc L.

Cleaning and liquid contact with solids

Processes

For metallic, siliceous, or calcareous basework, including...

134 41, 252101, 252146, C23G 104

Patent

active

042820413

ABSTRACT:
A method of removing aluminium containing alloy coatings from nickel or cobalt base alloy substrates in which the coated substrate is immersed in an aqueous mixture of nitric and sulphamic acids until coating dissolution is complete. A solution containing 5 to 30% vol./vol. nitric acid and from 5 to 30% wt./vol. sulphamic acid is preferred.

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patent: 2446060 (1948-07-01), Pray et al.
patent: 3349036 (1967-10-01), Campbell
patent: 3367874 (1968-02-01), Haviland et al.
patent: 3373114 (1968-03-01), Grunwald
patent: 3458353 (1969-07-01), Baldi
patent: 3607398 (1971-09-01), Lucas
patent: 3622391 (1971-11-01), Baldi
patent: 3833414 (1974-09-01), Grisik et al.
patent: 4032359 (1977-06-01), Fisher et al.

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