Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Yasutomo Ichiyama"'
Autor:
Noritoshi Araki1 ntaraki@nmc-net.co.jp, Yasutomo Ichiyama2, Ryo Oishi1, Teruo Haibara1, Takashi Yamada1
Publikováno v:
Journal of Microelectronic & Electronic Packaging. 2015, Vol. 12 Issue 2, p98-103. 6p.
Publikováno v:
2018 IEEE 68th Electronic Components and Technology Conference (ECTC).
Application of Ag bonding wire is expected to grow as a low cost alternative to Au bonding wire. Ag wire is a relatively new material for bonding wire, and its optimum condition for Free Air Ball (FAB) formation process is not well known. In this pap
Publikováno v:
International Symposium on Microelectronics. 2014:000272-000277
The Free Air Ball (FAB) formation processes of fine diameter Cu wires were observed, and the effects of process parameters were studied on the basis of high-speed camera observation. It was revealed that the FAB formation process is characterized by
Autor:
Yasutomo Ichiyama, Tohru Saito
Publikováno v:
Welding International. 18:436-443
(2004). Factors affecting flash weldability in high strength steel – a study on toughness improvement of flash welded joints in high strength steel. Welding International: Vol. 18, No. 6, pp. 436-443.
Publikováno v:
QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY. 21:507-514
For the purpose of improving the toughness of flash weld, the effect of upsetting conditions on the flash weld of 980MPa grade high strength steel bar has been studied. The main results obtained are as follows; (1) Characteristic features have been o
Autor:
Yasutomo ICHIYAMA, Tohru SAITO
Publikováno v:
QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY. 21:219-226
Autor:
Hideki Hamatani, Yasutomo Ichiyama
Publikováno v:
Materia Japan. 40:351-355
Publikováno v:
2013 IEEE 63rd Electronic Components and Technology Conference.
Due to the continuous rise in gold prices, copper (Cu) wire has become an alternative to gold (Au) wire in the field of LSI interconnection. The characteristics of Free Air Ball (FAB), which is used for the ball bonding, give a large influence on the
Autor:
Yasutomo Ichiyama, Tohru Saito
Publikováno v:
QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY. 13:365-370
Influence of chemical elements of base material has been investigated on interface quality of flash weld. Bend test of welds was carried out for 43 kinds of sheet steels which included solid solution strengthened, dual phase and precipitation hardene
Autor:
Yasutomo Ichiyama, Tohru Saito
Publikováno v:
QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY. 13:378-383
Initial stage of upset was investigated. The welding machine for experiment was designed so that platen movement for upsetting can be initiated at any desired voltage phase of AC power source. The voltage phase of AC power source at the instant of pl