Metal treatment – Process of modifying or maintaining internal physical... – Magnetic materials
Patent
1975-12-29
1978-07-18
Satterfield, Walter R.
Metal treatment
Process of modifying or maintaining internal physical...
Magnetic materials
75224, 148 166, 148 3157, 264125, 75226, H01F 102
Patent
active
041013484
ABSTRACT:
Aluminum-silicon-iron alloys exhibiting an excellent combination of properties are disclosed. The process for preparing these alloys is also disclosed. In this process an aluminum-silicon-iron alloy powder is formed, sintered and hot-pressed simultaneously with or after sintering. The alloy powder can contain 4-9%, by weight, aluminum, 8-11%, by weight, silicon and the remainder iron. Pressures for hot-pressing of at least 1000 psi. and sintering temperatures of at least 1205.degree. C are disclosed. The process can also include the additional step of nitriding the alloy powder prior to sintering. Such nitriding prevents or retards grain growth during sintering and provides increased electrical resistivity and hardness in the end product.
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Satterfield Walter R.
Spin Physics
Wiese B. D.
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