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The mechanism of wirebonding bondability for ultra thin Copper wire is described in this research. Two major analyses are conducted in the present paper. In the first, the characteristic of heat affected zone (HAZ) and free air ball (FAB) on thin Copper (Cu) wire have been carefully experimental measured. Thin film interfacial micro-tribology behavior between Cu FAB and Al pad is examined by Atomic...
The aim of present research is to investigate the characteristic of ultra thin copper wire and aluminum pad. In the first, the electric flame-off (EFO) characteristic of ultra thin copper wire has been carefully examined. Experimental results show thermal aging effect has significantly influence on the micro structure of free air ball (FAB). Optical microscopic (OM) examination for an as-drawn copper...
In the present paper, the tensile mechanical properties of thin gold wire before/after electric flame-off (EFO) process have been investigated by self-design pull test fixture. Microstructure characteristics of free air ball (FAB) and heat affected zone (HAZ) are also carefully investigated. The accurate experimental material data should be reflected as input for precise finite element analysis. Numerical...
In the present paper, the tensile mechanical properties of thin gold wire before/after electric flame-off process have been investigated by self-design pull test fixture. Microstructure characteristics of free air ball (FAB) and heat affected zone (HAZ) are also studied. The accurate experimental material data should be reflected as input for precise finite element analysis. Numerical model based...
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