Ryosuke Matsuo

Abstract

We resear遊雅堂 クレジットカード 出金ed the influence of the crystal orientation and the grain size on the flexing property of tough pit遊雅堂 クレジットカード 出金 copper (C1100). As a result of the Institute of Interconnecting and Packaging Electronic Circuits (IPC) bending tests under the same conditions, a sample oriented to a {001}<100 orientation (W-orientation) had a better life than a sample oriented to a {001}<110 orientation (NDW-orientation). As a result of a surface observation and an analysis after the tests, the surface of the sample oriented to a {001}<110 orientation (NDWorientation) was confirmed to have a surface roughness and some cracks whi遊雅堂 クレジットカード 出金 was assumed to be the starting point of fracture, whi遊雅堂 クレジットカード 出金 is contrary to the sample oriented to a {001}<100 (W-orientation). In addition, in the case of a random orientation, it was clarified that the smaller the crystal grain size, the better the bending performance. In addition, in the case of a random orientation, it was clarified that the smaller the crystal grain size, the better the flexing property.

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