Method and apparatus for controlling the degree of hydration in

Details Method and apparatus for controlling the degree of hydration in Method and apparatus for controlling the degree of hydration in

1975-06-16

1976-06-22

Tung, T

Chemistry: electrical and wave energy

Processes and products

73 73, 204 35N, 324 71R, 427 8, 427331, G01N 2726, C25D 544

Patent

active

039649822

ABSTRACT:
A mixed potential measurement utilizing a strip chart recording voltmeter coupled between the metal and its oxide immersed in the sealing solution is determinative of percent hydration of the part in situ during the sealing process.

REFERENCES:
patent: 2894882 (1959-07-01), Strodtz
patent: 3293155 (1966-12-01), Stone
patent: 3356597 (1967-12-01), Schmidt
patent: 3364554 (1968-01-01), Lindblad
patent: 3384556 (1968-05-01), Rohde
patent: 3419479 (1968-12-01), Klein
patent: 3649472 (1972-03-01), Morrissey et al.
S. Wernick, "Surface Treatment & Finishing of Light Metals," Metal Finishing, Aug., 1956.
R. C. Spooner et al., "X-Ray Emission Spectroscopic Study of the Sealing of H.sub.2 SO.sub. 4 Anodic Films on Aluminum", Plating, Apr. 1968.
G. A. Dorsey, "Effect of Sealing Variables on the Degree-of-Seal", J. Electrochem. Soc., Oct., 1970.
R. C. Spooner, "Sealing of Anodic Films on Aluminum & Its Alloys", Metal Finishing, Dec. 1968-Jan. 1969.

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