德赢ac米兰vwin Electric Review No.51Influence of 德赢ac米兰vwin Crystal Orientation and 德赢ac米兰vwin Grain Size on 德赢ac米兰vwin Flexing Property of Tough Pitch Copper

Ryosuke Matsuo

We researched 德赢ac米兰vwin influence of 德赢ac米兰vwin crystal orientation and 德赢ac米兰vwin grain size on 德赢ac米兰vwin flexing property of tough pitch copper (C1100). As a result of 德赢ac米兰vwin Institute of Interconnecting and Packaging Electronic Circuits (IPC) bending tests under 德赢ac米兰vwin 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 德赢ac米兰vwin tests, 德赢ac米兰vwin surface of 德赢ac米兰vwin sample oriented to a {001}<110 orientation (NDWorientation) was confirmed to have a surface roughness and some cracks which was assumed to be 德赢ac米兰vwin starting point of fracture, which is contrary to 德赢ac米兰vwin sample oriented to a {001}<100 (W-orientation). In addition, in 德赢ac米兰vwin case of a random orientation, it was clarified that 德赢ac米兰vwin smaller 德赢ac米兰vwin crystal grain size, 德赢ac米兰vwin better 德赢ac米兰vwin bending performance. In addition, in 德赢ac米兰vwin case of a random orientation, it was clarified that 德赢ac米兰vwin smaller 德赢ac米兰vwin crystal grain size, 德赢ac米兰vwin better 德赢ac米兰vwin flexing property.