Etching process for zirconium metallic objects

Details Etching process for zirconium metallic objects Etching process for zirconium metallic objects

1989-05-10

1990-05-22

Schor, Kenneth M.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156664, 436 55, 436 83, 134 3, C23F 100

Patent

active

049274929

ABSTRACT:
A process is disclosed for determining the dissolved zirconium content of a hydrofluoric acid-nitric acid etching bath for zirconium articles by determining the rise in temperature of a volume of the bath upon immersion therein of a known quantity of zirconium metal, immersing a known quantity of zirconium metal into a portion of the bath, measuring the rise in temperature over a predetermined period of time of said portion, determining the dissolved zirconium content of the bath as a function of the rise in temperature, and treating the bath dependent upon the dissolved zirconium content so determined to be in the bath.

REFERENCES:
patent: 2827724 (1958-03-01), Edds
patent: 3007769 (1961-11-01), McCord et al.
patent: 3048503 (1962-08-01), Foote et al.
patent: 3125474 (1964-03-01), Watkins et al.
patent: 3959046 (1976-05-01), Bussmann et al.
patent: 4105469 (1978-08-01), Megy et al.
patent: 4395302 (1983-07-01), Courduvelis

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