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In this paper, the hot cutting surface and edge formed at green state are characterized and researched. Surface morphology of the hot-cutting green state and co-fired state is observed by optical microscope and SEM, and compared with that of the natural surface that formed in tape casting. The Weibull statistical strength test is introduced to evaluate the influence to the quality and reliability...
The bonding procedure of copper wire ball bonding on an aluminum-metallized silicon substrate was investigated in this paper. The four crucial parameters: ultrasonic power, impact force, frequency duration and bonding temperature were optimized. It was found that the process window was quite narrow, thus the bonding process was less stable. In conjunction with the results of the process optimization,...
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