Metal treatment – Stock – Titanium – zirconium – or hafnium base
Reexamination Certificate
2005-04-26
2005-04-26
King, Roy (Department: 1742)
Metal treatment
Stock
Titanium, zirconium, or hafnium base
C420S422000
Reexamination Certificate
active
06884304
ABSTRACT:
The alloy contains, by weight, at least 95% zirconium and from 0.01 to 0.1% sulphur and, optionally, at least one element from the group consisting of the elements tin, iron, chromium, hafnium, niobium, nickel, oxygen and vanadium, the balance of the alloy consisting of inevitable impurities. The sulphur is present in the alloy in the dissolved state, thereby improving the creep strength and in the form of uniformly distributed fine precipitates, thereby improving the corrosion and hydriding resistance. The alloy may be heated by a solution annealing treatment in the β phase followed by a quench or by a soak at a temperature below 950° C. in order to transform it into the α or α+β phase.
REFERENCES:
patent: 5832050 (1998-11-01), Rebeyrolle et al.
patent: 6544361 (2003-04-01), Diz et al.
patent: 0 154 559 (1985-09-01), None
patent: 0 802 264 (1997-10-01), None
patent: 0 949 349 (1999-10-01), None
patent: 9604739 (1997-10-01), None
D. Charquet at “Influence of Sulfur Content on the Thermal Creep of Zirconium Alloy Tubes at 400C” Journal of Nuclear Materials, vol. 255, No. 1 May 1998 pp. 78-82.
Compagnie Europeenne du Zircomum CEZUS
Kenyon & Kenyon
King Roy
Morillo Janelle
LandOfFree
Zirconium alloy highly resistant to corrosion and to sun... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Zirconium alloy highly resistant to corrosion and to sun..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Zirconium alloy highly resistant to corrosion and to sun... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3398784