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Residual Stress and In-situ Thermal Stress Measurements of Copper Films on Glass Substrate

机译:玻璃基板上铜膜的残余应力和原位热应力测量

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The present study investigates the behavior of residual stress and thermal stress in thin copper films with X-rays. The copper films were deposited on a glass substrate by radio frequency (RF) sputtering. In-situ thermal stress measurement was also made on copper films during heat cycles. The residual stress of as-deposited state was tensile regardless of the conditions of film preparation. Early in the cooling stage, thermal stress behaves in an elastic manner so as to reduce the tensile stress until it stabilizes close to zero. In the cooling stage, little increase in the thermal stress was observed above 100 deg C and the hysteresis of thermal cycle was very small.
机译:本研究利用X射线研究铜薄膜中的残余应力和热应力行为。通过射频(RF)溅射将铜膜沉积在玻璃基板上。在热循环过程中,还对铜膜进行了原位热应力测量。不论成膜条件如何,沉积状态的残余应力均为拉伸应力。在冷却阶段的早期,热应力以弹性方式起作用,以减小拉应力,直到其稳定到接近零为止。在冷却阶段,在100℃以上观察到热应力几乎没有增加,并且热循环的磁滞很小。

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