Corrosion-resistant copper alloy

A copper alloy and corrosion-resistant technology, applied in the field of corrosion-resistant copper alloys, can solve the problems of high cost of nickel-nickel-nickel copper, marine biological pollution, processing difficulties, etc., and achieve excellent seawater corrosion resistance and erosion performance, excellent comprehensive performance, and excellent mechanical properties Effect

Active Publication Date: 2012-11-14
NINGBO SUNLIGHT MOTOR PARTS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The limitations and shortcomings of the above-mentioned tube bundle materials used in seawater corrosion environment are: aluminum brass and tin brass have low strength, dealloyed component corrosion (dezincification, dealumination) and serious erosion corrosion, etc.; nickel cupronickel has high cost , processing is difficult and other defects; titanium alloy and stainless steel have problems such as high cost and serious marine biological pollution
[0004] The application number is CN200610039282.1, and the patent titled "Seamless copper alloy tube for heat exchanger with excellent corrosion resistance and its preparation method" provides a seamless copper alloy tube for heat exchanger. On the basis, ele...

Method used

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Examples

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Effect test

Embodiment 1

[0015] A corrosion-resistant copper alloy composed of the following components in weight percentage: Mn 1.0%, Si 0.7%, Fe 0.05%, Mg 1.2%, Zn 2%, Al 13%, Ti 1.2%, Sc 0.5 %, Ni 5.5%, composite rare earth 0.3%, the mixed rare earth elements are La and Ce mixed rare earth elements, the percentage of Ce is 30%, and the balance is Cu.

Embodiment 2

[0017] A corrosion-resistant copper alloy consisting of the following components in weight percentage: Mn 1.2%, Si 0.5%, Fe 0.15%, Mg 0.8%, Zn 4%, Al 11%, Ti1.4%, Sc 0.3%, Ni 6.5%, composite rare earth 0.2%, of which the mixed rare earth elements are La and Ce mixed rare earth elements, the percentage of Ce is 50%, and the balance is Cu.

Embodiment 3

[0019] A corrosion-resistant copper alloy consisting of the following components in weight percentage: Mn 1.05%, Si 0.65%, Fe 0.08%, Mg 1.1%, Zn 2.5%, Al 12.5%, Ti1.25%, Sc 0.45%, Ni 5.8%, composite rare earth 0.28%, of which the mixed rare earth elements are La and Ce mixed rare earth elements, the percentage of Ce is 35%, and the balance is Cu.

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PUM

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Abstract

The invention discloses a corrosion-resistant copper alloy, which comprises the following compositions by weight percent: 1.0-1.2% of Mn, 0.5-0.7% of Si, 0.05-0.15% of Fe, 0.8-1.2% of Mg, 2-4% of Zn, 11-13% of Al, 1.2-1.4% of Ti, 0.3-0.5% of Sc, 5.5-6.5% of Ni and 0.2-0.3% of composite mischmetal, wherein the composite mischmetal contains La and Ce mischmetal elements, the percentage of Ce is 30-50%, and the balance is Cu.

Description

Technical field [0001] The invention relates to the technical field of copper alloys, in particular to a corrosion-resistant copper alloy. Background technique [0002] The tube bundle materials currently used in seawater environment mainly include aluminum brass (typical representative is: C68700, whose composition is 76-79wt% Cu, 1.8-2.5wt% Al, and the balance is Zn), tin brass (typical representative is :C44300, its composition is 70~73wt% Cu, 0.8~1.2wt% Sn, 0.06wt% Fe, 0.02~0.06As, the balance is Zn), nickel white copper (typical representative is: C70600, its composition is 9.0~11wt %Ni, 1.0~1.8wt%Fe, 1.0wt%Mn, 1.0wt%Zn, the balance is Cu; C71500, its composition is 29~33wt%Ni, 0.4~0.7wt%Fe, 1.0wt%Mn, 1.0wt %Zn, the balance is Cu), stainless steel (typically represented by 1Cr18Ni9Ti, 0Cr18Ni9Ti, 00Cr19Ni10 and 00Cr18Ni12Mo2) and titanium alloy (typically represented by TA2). [0003] The limitations and deficiencies of the above-mentioned tube bundle materials used in seawa...

Claims

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Application Information

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IPC IPC(8): C22C9/01
Inventor 李伟
Owner NINGBO SUNLIGHT MOTOR PARTS
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