Magnetorheological materials based on alloy particles
First Claim
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1. A magnetorheological material comprising a carrier fluid;
- a particle component having a diameter ranging from about 1.0 to 500 μ
m wherein the particle component is comprised of an iron alloy selected from the group consisting of iron-cobalt alloys having an iron;
cobalt weight ratio ranging from about 50;
50 to 85;
15 and iron-nickel alloys having an iron;
nickel weight ratio ranging from about 90;
10 to 99;
1, the iron alloy particle component being present in an amount from about 20 to 35 percent by volume and the carrier fluid being present in an amount from about 65 to 80 percent by volume;
a surfactant; and
a thixotropic agent.
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Abstract
A magnetorheological material containing a carrier fluid and an iron alloy particle component. The particle component can be either an iron-cobalt alloy or an iron-nickel alloy. The iron-cobalt alloy has an iron:cobalt ratio ranging from about 30:70 to 95:5 while the iron-nickel alloy has an iron:nickel ratio ranging from about 90:10 to 99:1. The iron alloy particle components are capable of imparting high yield stress capability to magnetorheological materials.
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Citations
16 Claims
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1. A magnetorheological material comprising a carrier fluid;
- a particle component having a diameter ranging from about 1.0 to 500 μ
m wherein the particle component is comprised of an iron alloy selected from the group consisting of iron-cobalt alloys having an iron;
cobalt weight ratio ranging from about 50;
50 to 85;
15 and iron-nickel alloys having an iron;
nickel weight ratio ranging from about 90;
10 to 99;
1, the iron alloy particle component being present in an amount from about 20 to 35 percent by volume and the carrier fluid being present in an amount from about 65 to 80 percent by volume;
a surfactant; and
a thixotropic agent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
- a particle component having a diameter ranging from about 1.0 to 500 μ
Specification