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US4818307A Expired / Lapsed US ⏱️ 0.0 years remaining

Dispersion strengthened copper-base alloy

Assignee: Toyota Motor Corp
•
Filing: 1987-12-16
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Granted: 1989-04-04
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Expires: 2007-12-16
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Abstract

Abstract Herein disclosed is a dispersion strengthened copper-base alloy having an excellent wear resistance, which alloy contains 5 to 30% (in weight) of nickel, 1 to 5% of silicon, 0.5 to 3% of boron and 4 to 30% of iron, the remainder being copper and unavoidable impurities, and having a structure in which hard particles composed chiefly of a silicide of iron-nickel system are dispersed in a copper-base matrix. The copper-base alloy is suitably cladded (or deposited) locally on a metallic base. The alloy may contain at least one of 0.1 to 5% of aluminum, 0.1 to 5% of Ti and 1 to 10% of Mn, if necessary, in addition to the above specified components. If necessary, 0.02 to 2% of carbon and 0.5 to 10% of chromium and/or 0.3 to 5% of titanium may be further added. Then, the structure is modified such that both the particles composed chiefly of the iron-nickel silicide and carbide particles are coexistently dispersed in the copper-base matrix.

Inventors

  • 👤 Kazuhiko Mori
  • 👤 Katsuhiko Ueda
  • 👤 Soya Takagi
  • 👤 Minoru Kawasaki

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 17:31
CPC Classifications
C; C23; C23C; C23C24/00; C23C24/08; C23C24/10; C23C24/103; B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/302; C22; C22C; C22C32/00; C22C32/0047; C22C32/0078; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12486

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 68 words
A dispersion strengthened copper-base alloy having excellent wear resistance, said alloy consisting essentially of, in weight percent, 5 to 30% of nickel, 1 to 5% of silicon, 0.5 to 3% of boron and 4 to 30% of iron, the remainder being copper and unavoidable impurities; and having a structure in which hard particles composed chiefly of a silicide of an iron-nickel system are dispersed in a copper-base matrix.
Claim 2
Dependent Claim 68 words
A dispersion strengthened copper-base alloy having excellent wear resistance, said alloy consisting essentially of, in weight percent, 5 to 30% of nickel, 1 to 5% of silicon, 0.5 to 3% of boron and 4 to 30% of iron, the remainder being copper and unavoidable impurities; and having a structure in which hard particles composed chiefly of a silicide of an iron-nickel system are dispersed in a copper-base matrix.
Claim 3
Dependent Claim 30 words
A dispersion strengthened copper-base alloy according to claim 1, having at least one of 0.1 to 5% of aluminum, 0.1 to 5% of titanium, and 1 to 10% of manganese.
Claim 4
Dependent Claim 44 words
A dispersion strengthened copper-base alloy according to claim 1, having 0.02 to 2% of carbon, and at least one of 0.5 to 10% of chromium and 0.3 to 5% of titanium, wherein carbide particles are dispersed in said structure coexistently with said hard particles.
Claim 5
Dependent Claim 28 words
A dispersion strengthened copper-base alloy according to claim 1, wherein said hard particles are further composed of a boride of iron-nickel system in complex form with said silicide.

References Cited (Backward Citations)

JPS4829449B1 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1992-04-03 1992-10-03 1993-04-04 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1996-04-03 1996-10-03 1997-04-04 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2000-04-03 2000-10-03 2001-04-04 $7700.00 Window Closed / Lapsed

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