Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1992-06-05
1993-07-13
Tufariello, T. M.
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
C25F 308
Patent
active
052270351
ABSTRACT:
A nitrohydrofluoric development bath for use in an electro-chemical etching rocess, known as the "blue etch process", for the non-destructive inspection of titanium or titanium alloy components such as turbo-machine blades and discs, the bath comprising, per liter, 320 g of nitric acid, from 13 to 22 g of hydrofluoric acid, from 4 to 7 g of dissolved titanium, and water as the balance.
REFERENCES:
patent: 3502552 (1970-03-01), Mizushima et al.
Biencourt Michel
Briot Francois P.
Gondel Claude G. G.
Riot Philippe P. E.
Ruimi Michel M.
Societe Nationale D'Etude et de Construction de Moteurs d'Aviati
Tufariello T. M.
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