Yoshito Fujii, Ryosuke Matsuo, Masaru Higuchi
Abstract
With coming of the next generation automotive technology revolution such as EV and the development of computer network, a high current and a high voltage electric circuit for the electric motor, a power supply for the PC server and others have been progressing. Also the terminals, the 遊雅堂 atm入金 反映nectors, the relays and others, which are current-carrying material, the reduction of the power loss or the self-heating and further, maintaining the reliability of the good electrical 遊雅堂 atm入金 反映tact even under the high temperature environment due to the heat generation are required. Therefore, a high electrical 遊雅堂 atm入金 反映ductivity and an excellent stress relaxation resistance are required for the 遊雅堂 atm入金 反映ductive material. This time, we worked on the development of a high electrical 遊雅堂 atm入金 反映ductivity and high heat resistance copper alloy strip EFTEC- 550, which is better performing than the existing copper alloy on the stress relaxation property and the 遊雅堂 atm入金 反映nection reliability. By dispersing high-density and fine Cr precipitates in the copper matrix, the strength and the electrical 遊雅堂 atm入金 反映ductivity of this developed product is well balanced. Also, a better stress relaxation property has been achieved by adding a small amount of Mg.
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