Re-work method for removing extraneous metal from cermic substra

Details Re-work method for removing extraneous metal from cermic substra Re-work method for removing extraneous metal from cermic substra

1982-10-20

1985-03-12

Smith, William

Cleaning and liquid contact with solids

Processes

Including application of electrical radiant or wave energy...

29840, 29885, 228125, B08B 700

Patent

active

045043221

ABSTRACT:
A re-work method for removing extraneous plated metal layer areas from the surface of a ceramic substrate containing refractory metal areas wherein the substrate is heated at a temperature for a time sufficient to strengthen the bond between the plated metal layer and the refractory metal areas while simultaneously reducing the strength of the bond between the extraneous plated metal layer overlying the ceramic and the ceramic, immersing the substrate in a liquid, and applying localized ultrasonic energy in close proximity to the extraneous metal areas to be removed.

REFERENCES:
patent: 3420758 (1969-01-01), Scheer
patent: 3554793 (1971-01-01), Krieger
patent: 3698408 (1972-10-01), Jacke
patent: 3698941 (1972-10-01), De Nobel et al.
patent: 3898351 (1975-08-01), Kennison et al.
patent: 4082908 (1978-04-01), Vanaglash, Jr.
IBM TDB, vol. 11, No. 10, Mar. 1969, p. 1356.
IBM TDB, vol. 17, No. 5, Oct. 1974, p. 1310; No. 7, Dec. 1974, p. 2118.

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