Antiwear Cu-base material with high electric conductivity

A wear-resistant material and high conductivity technology, applied in the field of copper-based alloys, can solve the problems of difficult processing, poor stress corrosion resistance, and high cold work hardening performance

Inactive Publication Date: 2002-05-01
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, although C63800 alloy and C68800 alloy have higher strength, the former has poor electrical conductivity, w

Method used

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Embodiment

[0008] The material composition contains (by weight) 1.6% Ti, 0.7% B, 0.4% Sn, 0.02% Ce, and remaining Cu. According to the material composition, industrial pure copper, boron-copper master alloy, industrial pure tin, industrial pure titanium and cerium-rich mixed rare earth are smelted in an intermediate frequency furnace and the temperature of the alloy melt is controlled at 1250-1350 ℃, and cast into rods (or plates) Blank. Ingot milling, homogenized annealing, hot extrusion and cold drawing to make bars and wires; slabs can be hot rolled and cold rolled to make thin strips.

[0009] Table 1 shows the mechanical, electrical and thermal properties of the material of the present invention at room temperature (20°C). Table 1 Tensile strength Yield strength Elongation Elastic modulus Hardness Electrical conductivity Thermal conductivity σ b (MPa) σ 0.2 (MPa) δ(%) E(GPa) HV %IACS W / cm s ℃ 610-650 480-510 6-10 116-123 170-210 67-71 2.94-3.10

[0010] Compared with commonly us...

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PUM

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Abstract

A copper-base alloy material contains Ti (0.4-2.9 wt.%), B (0.2-1.3 wt.%), Sn (0.1-0.9 wt.%), Ce (0.01-0.06 wt.%) and Cu (the balance). Its advantages are excellent antiwear nature, and electric and thermal conductivities, higher tension strength and elastic extreme, proper toughness, lower expandability, easy machining and welding, and sealing performance with resin.

Description

technical field [0001] The invention belongs to copper base alloy. Background technique [0002] At present, chromium bronze, tin bronze and Cu-Fe-P series (such as C19400) are widely used in electric processing electrodes and welding electrodes, instruments and meters, conductive contact reeds, connectors and other elastic contact elements in electronic communication devices, and integrated circuit lead frames. alloy) and other alloys. Although chromium bronze with low chromium content (such as QCr0.5) has high electrical conductivity, it has low tensile strength and hardness, and poor wear resistance, while chromium bronze with high chromium content (Cr≥0.8 %) The smelting process is complicated, and composition segregation is easy to occur; tin bronze (containing Sn: 5-8%) has poor processability, long production cycle, low electrical conductivity, low thermal stability, and the maximum working temperature is less than 100°C; C19400 The wear resi...

Claims

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Application Information

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IPC IPC(8): C22C9/00
Inventor 涂江平杨友志张孝彬刘芙
Owner ZHEJIANG UNIV
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