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White-colored copper alloy with reduced nickel content

A copper alloy, white technology, applied in the field of copper-based alloys, can solve problems such as low melting temperature

Inactive Publication Date: 2011-08-10
PMX IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Bronwite is very white, very fluid and has a relatively low melting temperature, which makes it excellent for small, thin and delicate castings such as clothing trimmings, but contains enough Pb to cause the current restrictions on hazardous substances ( Restrictions on Hazardous Substances (RoHS)) and Consumer Product Safety regulations (Consumer Product Safety regulations)

Method used

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  • White-colored copper alloy with reduced nickel content
  • White-colored copper alloy with reduced nickel content
  • White-colored copper alloy with reduced nickel content

Examples

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Embodiment Construction

[0041] Color (of an alloy or other material) may be determined spectroscopically or by other objective means. Instruments such as those offered by X-Rite Inc. (Grand Rapids, MI) or Hunter Associates Laboratory Inc. (Reston, VA) base their color on two color properties "hue" and "chroma" and a value called "value". The lightness property quantifies the color. Hue is the color perception, and the object is recognized as red, green, yellow, blue, etc. Chroma is the concentration (intensity or saturation) of a color, ranging from gray to pure hue. The value is a measure of the lightness of the color tone, ranging from pure white to pure black. Combinations of these values ​​give unique positions in polar color space, in figure 1 In , hue represents color luminosity (angular position), chroma represents intensity (radial position), and value represents lightness (vertical position).

[0042] An alternative to specifying colors is through the CIELAB scale. CIE stands for Commis...

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PUM

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Abstract

Disclosed is a white-colored copper alloy comprising by weight up to 30% zinc, up to 20% manganese, up to 5% nickel with the balance copper. This alloy may have from 6% to 25% zinc, from 4% to 17% manganese, from 0.1% to 3.5% nickel and the balance copper. The balance copper in the alloy may further contain at least one of: up to 0.5% of at least one of the group which consists of Sn, Si, Co, Ti,Cr, Fe, Mg, Zr, and Ag; and up to 0.1% of at least one of the group which consists of P, B, Ca, Ge, Se, Te. It may also contain up to 0.3% Zr by weight. The alloy may have an electrical conductivity greater than 2.5% IACS at eddy current gauge exciting frequencies between 60 kHz and 480 kHz.

Description

[0001] This invention claims U.S. Provisional Patent Application No. 61 / 095,719, "WHITE-COLORED COPPER ALLOY WITH REDUCED NICKELCONTENT," filed September 10, 2008, and U.S. Provisional Patent Application No. 61 / 095,733, "IMPROVED WHITE-COLORED COPPER ALLOY WITH REDUCEDNICKEL CONTENT" priority. technical field [0002] The present invention relates to white or silver colored copper based alloys having a reduced nickel content compared to standard alloys of a similar colour. Background technique [0003] Copper-based alloys are widely used because of their combination of ease of preparation, corrosion resistance, electrical and thermal conductivity, and availability of a wide range of attractive colors. They are the material of choice for currency in circulation around the world, in many cases as part of multilayer composite systems. Additionally, recent research has shown that copper and copper alloy surfaces can be made antimicrobial, inactivating various microorganisms in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/05C22C9/04
CPCC22C9/05C22C9/04
Inventor C·克拉克R·普拉特T·D·约翰逊T·徐
Owner PMX IND
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