Specialized metallurgical processes – compositions for use therei – Processes – Producing or purifying free metal powder or producing or...
Patent
1994-12-09
1997-11-18
Kastler, Scott
Specialized metallurgical processes, compositions for use therei
Processes
Producing or purifying free metal powder or producing or...
75436, B22F 100
Patent
active
056883030
ABSTRACT:
A mechanical alloying process wherein compacting of particulate feedstock is physically separate from subsequent comminuting improves control and consistency in mechanical alloying. The preferred compaction is by squeezing between rollers or other compacting means to produce a coherent mass such as a strip. The coherent mass (preferably rolled strip) is comminuted separately from the rolling or compression. This allows for a reduced temperature in comminuting or an atmosphere different from compacting or compressing. Compacting and comminuting are repeated to produce the desired extent of alloying and homogenization.
REFERENCES:
patent: 2994917 (1961-08-01), Fritsch
patent: 3041716 (1962-07-01), Herenguel
patent: 3099080 (1963-07-01), Worn
patent: 3179516 (1965-04-01), Cross
patent: 4076520 (1978-02-01), Pietsch
patent: 4391634 (1983-07-01), Kelley et al.
patent: 4534935 (1985-08-01), Ambrose et al.
"Mechanical Alloying--A Perspective", John S. Benjamin, New Materials by Mechanical Alloying Techniques, Dec. 1989, pp. 3-18.
"Metastable Alloy Phase Formation by Repeated Rolling in Some Common Metallic Binary Alloy Systems", P.H. Shingu et al, Solid State Powder Processing, Dec. 1990, pp. 21-35.
Kirk-Othmer Encyclopedia of Chemical Technology, 3rd Edition, vol. 21, Dec. 1983, pp. 132-162.
Chemical Engineers' Handbook, 5th Ed., Dec. 1973, "Pressure Compaction", pp. 8-58 to 8-61.
Metals Handbook, 9th Ed., vol. 6, Dec. 1983, "Solid State Welding", J.L. Jellison, pp. 672-691.
Metals Handbook, 9th Ed., vol. 7, Dec. 1984, "Milling of Brittle and Ductile Materials", by the ASM Committee of Milling, pp. 56-70.
Metals Handbook, 7th Ed., vol. 7, Dec. 1984, "Roll Compacting of Metal Powders", by the ASM Committee on Milling, pp. 401-409.
Aluminum Company of America
Kastler Scott
Lippert Carl R.
LandOfFree
Mechanical alloying process does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Mechanical alloying process, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mechanical alloying process will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1562389