Metal treatment – Process of modifying or maintaining internal physical... – Magnetic materials
Patent
1991-03-28
1993-07-06
Wyszomerski, George
Metal treatment
Process of modifying or maintaining internal physical...
Magnetic materials
148304, 252 6255, C21D 104, C21D 153
Patent
active
052250059
ABSTRACT:
A method of heat treating an amorphous metal alloy by immersing the alloy in a fluidized bed to heat the alloy to a temperature below its recrystallization temperature. The alloy is maintained in the fluidized bed for a time sufficient to reduce internal stresses while minimizing crystal growth and nucleation of crystallites in the alloy. Then, the alloy is removed from the fluidized bed and cooled. A magnetic field can be applied to the alloy before, during or after heating the alloy in the fluidized bed. The magnetic field is applied for a time sufficient to achieve substantial magnetic domain alignment while minimizing crystal growth and nucleation of crystallites in the alloy. The cooling step is effective to maintain the magnetic domain alignment in the alloy. The cooling step can be performed with a chill bath or a fluidized bed which is cooled by a circulating gas such as nitrogen or air. The alloy can be slowly cooled by convection and radiation after it is removed from the first fluidized bed.
REFERENCES:
patent: 2569468 (1951-10-01), Gaugler
patent: 4081298 (1978-03-01), Mendelsohn et al.
patent: 4132005 (1979-01-01), Coulacoglou
patent: 4262233 (1981-04-01), Becker et al.
patent: 4268325 (1981-05-01), O'Handley et al.
patent: 4368131 (1983-01-01), Rosenweig
patent: 4394282 (1983-07-01), Seiver
patent: 4565686 (1986-01-01), Kumar
patent: 4649248 (1987-03-01), Yamaguchi et al.
patent: 4769091 (1988-09-01), Yoshizawa et al.
patent: 4809411 (1989-03-01), Lin et al.
patent: 4813653 (1989-03-01), Piepers
patent: 4877464 (1989-10-01), Silgalis et al.
patent: 4931105 (1990-06-01), Woodard
McGraw Edison Technical Bulletin 201-10 (Sep. 1982).
M. Hunt, "Amorphous Metal Alloys", Metals Progress, pp. 35-38 (Nov. 1990).
Baranowski John F.
Burrage Lawrence M.
Goedde Gary L.
White James V.
Wilson Lawrence G.
Cooper Power Systems, Inc.
Wyszomerski George
LandOfFree
Method of annealing/magnetic annealing of amorphous metal in a f does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of annealing/magnetic annealing of amorphous metal in a f, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of annealing/magnetic annealing of amorphous metal in a f will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1686953