Antiwear Cu-base material with high electric conductivity

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...