Soft magnetic iron/cobalt/chromium-based alloy and process for manufacturing it
AssigneeVacuumschmelze GmbH & Co. KG
InventorsWitold Pieper, Joachim Gerster
Life of this patent
Estimating the term…
Abstract
A soft magnetic alloy consists essentially of 5 percent by weight≦Co≦30 percent by weight, 1 percent by weight≦Cr≦20 percent by weight, 0.1 percent by weight≦Al≦2 percent by weight, 0 percent by weight≦Si≦1.5 percent by weight, 0.017 percent by weight≦Mn≦0.2 percent by weight, 0.01 percent by weight≦S≦0.05 percent by weight where Mn/S is >1.7, 0 percent by weight≦O≦0.0015 percent by weight, und 0.0003 percent by weight≦Ce≦0.05 percent by weight, 0 percent by weight≦Ca≦0.005 percent by weight and the remainder iron, where 0.117 percent by weight≦(Al+Si+Mn+V+Mo+W+Nb+Ti+Ni)≦5 percent by weight.
Claims27
A soft magnetic alloy consisting essentially of:
- an amount of cobalt Co, such that 5 percent by weight≦Co≦30 percent by weight,
- an amount of chromium Cr, such that 1 percent by weight≦Cr≦20 percent by weight,
- an amount of aluminum Al, such that 0.1 percent by weight≦Al≦2 percent by weight,
- optionally, an amount of silicon Si, such that 0 percent by weight≦Si≦1.5 percent by weight,
- an amount of manganese Mn, such that 0.017 percent by weight≦Mn≦0.2 percent by weight,
- an amount of sulfur S, such that 0.01 percent by weight≦S≦0.05 percent by weight, and wherein where Mn/S>1.7,
- optionally, an amount of oxygen O, such that 0 percent by weight≦O≦0.0015 percent by weight,
- an amount of cerium Ce, such that 0.001 percent by weight≦Ce≦0.05 percent by weight,
- optionally, an amount of calcium Ca, such that 0 percent by weight≦Ce≦0.005 percent by weight,
- optionally, amounts of vanadium V, molybdenum Mo, tungsten W, niobium Nb, titanium Ti, and nickel Ni, such that the amounts of Al, Si, and Mn, and any amounts of V, Mo, W, Nb, Ti, and Ni present are such that 0.117 percent by weight≦(Al+Si+Mn+V+Mo+W+Nb+Ti+Ni)≦5 percent by weight,
- and the remainder iron,
- wherein the alloy has a coercive field strength Hc<5.0 A/cm.
Dependencies are inferred from the claim text.