Fluid handling – Self-proportioning or correlating systems – Mixture condition maintaining or sensing
Patent
1982-08-20
1984-10-16
Tung, T.
Fluid handling
Self-proportioning or correlating systems
Mixture condition maintaining or sensing
204 1T, 204435, 148 614R, 423272, G01N 2746
Patent
active
044773293
ABSTRACT:
A modified alkaline peroxide pre-bond process for the surface treatment of titanium is useful as a practical production process. In this modified process, an exceptionally wide range of allowable peroxide concentration, namely, from 0.001 molar to 0.2 molar (and preferably 0.001 molar to 0.01 molar) may be tolerated and a novel real-time peroxide monitoring and control technique is employed. The process is further improved by means of the use of stabilizers such as precipitated magnesium silicate which greatly increases bath life-time and reduces the overall operating cost of the process. Solution operating conditions have been defined which permit titanium adherends to be processed satisfactorily over a wide range of hydrogen peroxide concentration. In particular, the acceptable temperature range is 125.degree. F.-165.degree. F. (51.7.degree. C.-73.8.degree. C.); the treatment period is 15 to 25 minutes and the hydroxide concentration is 0.3 to 0.9 molar. The preferred values are approximately 145.degree. F. (62.7.degree. C.); 20 minutes, and 0.5 molar, respectively. An electrochemical method has been established utilizing a magnesium electrode (114) which provides a stable potential characteristic that is dependent only on the concentration of the peroxide. The resultant capability to reliably monitor the peroxide concentration in real time in turn permits an automated feed system to be effectively utilized for sustaining the peroxide concentration within the desired limits.
REFERENCES:
patent: 3134728 (1964-05-01), Goldsmith
patent: 3367849 (1968-02-01), Blaedel et al.
patent: 3539455 (1970-11-01), Clark
patent: 4127448 (1978-11-01), Schick et al.
Rogers Alisa K.
Weber Kenneth E.
Dachs Louis L.
Lockheed Corporation
Tung T.
LandOfFree
Apparatus for maintaining peroxide concentration does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for maintaining peroxide concentration, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for maintaining peroxide concentration will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1944528