Metal treatment – Compositions – Heat treating
Patent
1981-11-27
1984-11-20
Childs, Sadie L.
Metal treatment
Compositions
Heat treating
148 635, 4273764, 4273768, C23C 1100
Patent
active
044837208
ABSTRACT:
Process for applying a protective coating to a metal substrate which provides a thermal barrier and a barrier against oxidation of the substrate. The coating material is a mixture of two metals M.sub.1 and M.sub.2, e.g., cerium (M.sub.1) and cobalt (M.sub.2), one of which when exposed to an atmosphere containing a low partial pressure of oxygen and at a high temperature forms a stable oxide, the other of which does not form a stable oxide under such conditions. A coating consisting of such a metal alloy or mixture is subjected to such conditions to produce an outer oxide layer of metal M.sub.1 and an inner metal layer of M.sub.2 alloyed with one or more components of the substrate. The oxide layer provides thermal and oxidation protection and the inner layer bonds the coating to the substrate.
REFERENCES:
patent: 3622234 (1971-11-01), Seybolt et al.
patent: 4229234 (1980-10-01), Krutenat et al.
patent: 4342792 (1982-08-01), Brown et al.
Bonesteel et al., "Mechanical Properties and Structure of Internally Oxidized Niobium-1% Zirconium Alloy", Trans. JIM, vol. 9 pp. 598-601, 1968.
Rowcliffe et al., "Strengthening of Niobium-Zirconium Alloys by Internal Oxidation", Materials Sciences Lab. pp. 741-750.
Jorgensen, "Oxidation-Controlled Aging of SmCo.sub.5 Magnets", Journal of the Less-Common Metals, vol. 77 (1981) pp. 221-226.
Jorgensen, "The Influence of the Microstructure on the Internal Oxidation of SmCo.sub.5 ", Ceramic Microstructures' 76 with Emphasis on Energy Related Applications, pp. 344-353, 1977.
Bartlett et al., "Microstructure and Growth Kinetics of the Fibrous Composite Subscale . . . " Metallurgical Transactions, vol. 5, Feb. 1974.
Bartlett et al., "Microstructural Changes in SmCo.sub.5 Caused by Oxygen Sinter-Annealing and Thermal Aging", J. of the Less-Common Metals, vol. 37, 1974, pp. 21-34.
Jorgensen et al., "Solid-Phase Sintering of SmCo.sub.5 " Journal of Less-Common Metals, vol. 37, pp. 205-212, 1974.
Bartlett Robert W.
Jorgensen Paul J.
Childs Sadie L.
Faubion Urban H.
Gregg Edward B.
S R I International
LandOfFree
Process for applying thermal barrier coatings to metals does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for applying thermal barrier coatings to metals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for applying thermal barrier coatings to metals will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2188017