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US4710243A Expired / Lapsed US ⏱️ 0.0 years remaining

Wear-resistant alloy of high permeability and method of producing the same

Assignee: FOUNDATION RESEARCH INSTITUTE OF ELECTRIC AND MAGNETIC ALLOYS 1-1 YAGIYAMAMINAMI 2-CHOME SENDAI CITY MIYAGI PREF JAPAN
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Filing: 1985-07-29
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Granted: 1987-12-01
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Expires: 2005-07-29
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Abstract

Abstract A wear-resistant alloy of high permeability having an effective permeability of at least about 3,000 at 1 KHz, a saturation magnetic flux density of at least about 4,000 G, and a recrystallization texture of {110}<112>+{311}<112> is provided. The alloy is produced by cold working a forged or hot worked ingot of an alloy of a desired composition at a cold working ratio of at least about 50%, heating the cold worked alloy at a temperature which is below the m.p. of the alloy and not less than about 900 DEG C., and cooling the heated alloy from a temperature which is not less than an order-disorder transformation point (about 600 DEG C.) of the alloy. Alternatively, the alloy is produced by reheating the cooled alloy to a temperature which is not over than the order-disorder transformation point, and cooling the reheated alloy.

Inventors

  • 👤 Hakaru Masumoto
  • 👤 Yuetsu Murakami

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 21:24
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/03

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 56 words
A wear-resistant alloy having a high permeability, comprising by weight about 60-90% of Ni, about 0.5-14% of Nb, and a remainder being Fe with unavoidable impurities, and having an effective permeability of at least about 3,000 at 1 KHz, a saturation magnetic flux density of at least about 4,000 G, and a recrystallized texture of {110}<112>+{311}<112>.
Claim 2
Dependent Claim 56 words
A wear-resistant alloy having a high permeability, comprising by weight about 60-90% of Ni, about 0.5-14% of Nb, and a remainder being Fe with unavoidable impurities, and having an effective permeability of at least about 3,000 at 1 KHz, a saturation magnetic flux density of at least about 4,000 G, and a recrystallized texture of {110}<112>+{311}<112>.
Claim 3
Dependent Claim 184 words
A wear-resistant alloy having a high permeability, comprising by weight about 60-90% of Ni and about 0.5-14% of Nb as main components; about 0.01-30% of at least one subsidiary component selected from the group consisting of each not over than about 7% of Cr, Mo, Ge and Au, each not over than about 10% of Co and V, not over than about 15% of W, not over than about 20% of Ta, each not over than about 25% of Cu and Mn, each not over than about 5% of Al, Si, Ti, Zr, Hf, Sn, Sb, Ga, In, Tl, Zn, Cd, rare earth elements and platinum group elements, each not over than about 3% of Be, Ag, Sr and Ba, each not over than about 1% of B and P, and not over than about 0.1% of S; and a remainder being Fe as a main component with a minor amount of unavoidable impurities, and having an effective permeability of at least about 3,000 at 1 KHz, a saturation magnetic flux density of at least about 4,000 G, and a recrystallized texture of {110}<112>+{311}<112>.
Claim 4
Dependent Claim 184 words
A wear-resistant alloy having a high permeability, comprising by weight about 60-90% of Ni and about 0.5-14% of Nb as main components; about 0.01-30% of at least one subsidiary component selected from the group consisting of each not over than about 7% of Cr, Mo, Ge and Au, each not over than about 10% of Co and V, not over than about 15% of W, not over than about 20% of Ta, each not over than about 25% of Cu and Mn, each not over than about 5% of Al, Si, Ti, Zr, Hf, Sn, Sb, Ga, In, Tl, Zn, Cd, rare earth elements and platinum group elements, each not over than about 3% of Be, Ag, Sr and Ba, each not over than about 1% of B and P, and not over than about 0.1% of S; and a remainder being Fe as a main component with a minor amount of unavoidable impurities, and having an effective permeability of at least about 3,000 at 1 KHz, a saturation magnetic flux density of at least about 4,000 G, and a recrystallized texture of {110}<112>+{311}<112>.
Claim 5
Dependent Claim 181 words
A wear-resistant alloy having a high permeability, comprising by weight about 60-90% of Ni, about 0.5-14% of Nb and about 0.001-0.1% of S as main components; about 0.01-30% of at least one subsidiary component selected from the group consisting of each not over than about 7% of Cr, Mo, Ge and Au, each not over than about 10% of Co and V, not over than about 15% of W, not over than about 20% of Ta, each not over than about 25% of Cu and Mn, each not over than about 5% of Al, Si, Ti, Zr, Hf, Sn, Sb, Ga, In, Tl, Zn, Cd, rare earth elements and platinum group elements, each not over than about 3% of Be, Ag, Sr and Ba, and each not over than about 1% of B and P; and a remainder being Fe as a main component with a minor amount of unavoidable impurities, and having an effective permeability of at least about 3,000 at 1 KHz, a saturation magnetic flux density of at least about 4,000 G, and a recrystallized texture of {110}<112>+{311}<112>.
Claim 6
Dependent Claim 181 words
A wear-resistant alloy having a high permeability, comprising by weight about 60-90% of Ni, about 0.5-14% of Nb and about 0.001-0.1% of S as main components; about 0.01-30% of at least one subsidiary component selected from the group consisting of each not over than about 7% of Cr, Mo, Ge and Au, each not over than about 10% of Co and V, not over than about 15% of W, not over than about 20% of Ta, each not over than about 25% of Cu and Mn, each not over than about 5% of Al, Si, Ti, Zr, Hf, Sn, Sb, Ga, In, Tl, Zn, Cd, rare earth elements and platinum group elements, each not over than about 3% of Be, Ag, Sr and Ba, and each not over than about 1% of B and P; and a remainder being Fe as a main component with a minor amount of unavoidable impurities, and having an effective permeability of at least about 3,000 at 1 KHz, a saturation magnetic flux density of at least about 4,000 G, and a recrystallized texture of {110}<112>+{311}<112>.

References Cited (Backward Citations)

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US3794530A Cited
US3989555A Cited
US4440720A Cited
JPS57123947A Cited
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JPS59107052A Cited
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JPS5985851A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1990-11-30 1991-06-01 1991-12-01 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1994-11-30 1995-06-01 1995-12-01 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1998-11-30 1999-06-01 1999-12-01 $7700.00 Window Closed / Lapsed

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