Effect of EFO parameters on the HAZ and bondability of gold wire
The effect of electrical flame off(EFO)discharge parameters on the heat affected zone(HAZ)and bondability of gold wire was studied in this paper.The wire was fired and then bonded in a ball bonding procedure,in which the effect of EFO supplying current and firing time was analyzed.The results show that the diameter of free air ball(FAB)increases as the EFO time or current increases on the basis of a same current or time.With the increase of EFO current on the basis of a comparable FAB size,both the length and the grain size of HAZ decrease.The wire exhibits increasing tensile breaking load and elongation in the HAZ,and wire pulling force after bonding with the increase of current.The FAB under higher current presents better deformability and smaller bonded ball height.However,decreasing of ball shear force indicates the decrease of bondability with the increase of current.
Gold wire Wire bonding Free air ball Heat affected zone Bondability
Wenyan Zhou Jianwen Kong Feifei Kang Yongjin Wu Guoxiang Yang Hongying Pei Jialin Chen Jian Lu Jianhong Yi
State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,Kunmi Department of Mechanical and Biomedical Engineering,City University of Hong Kong,Kowloon,Hong Kong S Faculty of Materials Science and Engineering,Kunming University of Science and Technology,Kunming,Ch
国际会议
上海
英文
413-418
2018-08-08（万方平台首次上网日期，不代表论文的发表时间）