Unlock instant, AI-driven research and patent intelligence for your innovation.

Cu-ni-si alloy

A cu-ni-si, alloy technology, applied in the direction of electrical components, circuits, electrical solid devices, etc., can solve the problem of PFZ width increase and achieve the effect of improving conductivity

Active Publication Date: 2009-08-19
JX NIPPON MINING & METALS CORP
View PDF5 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] According to non-patent literature 2, as the aging time increases, the width of the PFZ also increases

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Cu-ni-si alloy
  • Cu-ni-si alloy
  • Cu-ni-si alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0132] Therefore, a preferred embodiment of the manufacturing method of the copper alloy of the present invention comprises the steps carried out in the following order:

[0133] - a process of melting and casting an ingot containing 1.2 to 3.5 mass % of Ni, Si at a concentration (mass %) of 1 / 6 to 1 / 4 of the Ni concentration (mass %), and 0.5 as an optional component Zn of less than mass %, the rest is composed of Cu and impurities with a total amount of less than 0.05 mass %;

[0134] - hot rolling process;

[0135] - cold rolling process;

[0136] -Solution treatment process to adjust the average crystal grain size to the range of 1-15 μm;

[0137] - Cold rolling process with a processing rate of 0-40%;

[0138] - Keep the maximum temperature of the material during heat treatment below 550°C, keep the material in the temperature range of 450-550°C for 5-15 hours, and keep the temperature of 200-250°C, 250-300°C and 300-350°C during the heating process Aging treatment pr...

Embodiment

[0145] Using a high-frequency induction furnace, melt 2 kg of electrolytic copper in a graphite crucible with an inner diameter of 60 mm and a depth of 200 mm. After covering the molten liquid surface with a charcoal sheet, predetermined amounts of Ni and Si were added, and Zn was added as needed, and the temperature of the molten liquid was adjusted to 1200°C. Next, the melt was cast into a mold to manufacture an ingot with a width of 60 mm and a thickness of 30 mm. The concentration of impurities other than Ni, Si, and Zn in the ingot was determined by semi-quantitative analysis of all elements by the glow discharge-mass spectrometry method, and the result was about 0.01% by mass in total. Elements with a relatively high concentration include Fe (0.005% by mass), S (0.001% by mass), and C (0.001% by mass).

[0146] After the ingot was heated at 950°C for 3 hours, it was hot-rolled to a thickness of 8 mm, and ground with a grinder to remove scale on the surface. Then, proce...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
tensile strengthaaaaaaaaaa
widthaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to View More

Abstract

A Cu-Ni-Si alloy for electronic material that with the addition of other alloy elements minimized, simultaneously exhibits enhanced electric conductivity, strength, flexure and stress relaxation performance. There is provided a Cu-Ni-Si alloy comprising 1.2 to 3.5 mass% Ni, Si in a concentration (mass%) of 1 / 6 to 1 / 4 of the Ni concentration (mass%) and the balance Cu and impurities whose total amount is 0.05 mass% or less, the Cu-Ni-Si alloy having its configuration of crystal grains and width of nonprecipitation zone regulated so as to fall within appropriate ranges through controlling of solution treatment conditions, aging treatment conditions and degree of roll working. Thus, there can be provided a copper alloy strip of 55 to 62% IACS electric conductivity and 550 to 700 MPa tensile strength, being free from cracking at 180 DEG contact bending and exhibiting a stress relaxation ratio, as measured upon heating at 150 DEG C for 1000 hr, of 30% or below.

Description

technical field [0001] The invention relates to a Cu-Ni-Si alloy suitable for various electronic components such as lead frames, connectors, plugs, terminals, relays and switches. The invention also relates to a method for the manufacture of the alloy. In addition, the present invention also relates to electronic components using the alloy. Background technique [0002] Copper alloys for electronic materials used in electronic parts and the like are required to satisfy both high strength and high electrical conductivity (or thermal conductivity) as basic features. In addition, bending workability, stress relaxation resistance, heat resistance, heat peeling resistance and other plating properties (Metki properties), solder wettability, etching processability, punching properties, corrosion resistance, etc. are also required. [0003] Against such a background, in recent years, copper alloys have been used as electronic materials instead of solid-solution-strengthened copper...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/06C22C9/04C22F1/00C22F1/08H01L23/50
CPCC22C9/06H01L2924/0002C21D1/25C22F1/00C22F1/08H01L23/49579H01L2924/00C22C9/04
Inventor 波多野隆绍
Owner JX NIPPON MINING & METALS CORP