DSpace university logo mark
Advanced Search
Japanese | English 

NAOSITE : Nagasaki University's Academic Output SITE > Faculty of Engineering > Bulletin > Reports of Graduate School of Engineering, Nagasaki University > Volume 41, No. 77 >

酸性水溶液からの銀電析法により表面処理された銅合金リードフレーム材とエポキシ樹脂との密着性向上技術


File Description SizeFormat
41_77_37.pdf4.25 MBAdobe PDFView/Open

Title: 酸性水溶液からの銀電析法により表面処理された銅合金リードフレーム材とエポキシ樹脂との密着性向上技術
Other Titles: Improvement of Adhesion Strength Between Epoxy Resin and Copper Alloy Lead-frame with Silver Layer Electrodeposited from Acid Aqueous Solution
Authors: 大貝, 猛 / 高尾, 慶蔵 / 木下, 慎也 / 高月, 昭
Authors (alternative): Ohgai, Takeshi / Takao, Keizo / Kinoshita, Shinya / Takatsuki, Akira
Issue Date: Jul-2011
Publisher: 長崎大学大学院工学研究科 / Graduate School of Engineering, Nagasaki University
Citation: 長崎大学大学院工学研究科研究報告, 41(77), pp.37-44; 2011
Abstract: Adhesion strength between epoxy resin and copper alloy lead-frame was improved using silver layer electrodeposited from acid aqueous solution. Surface roughness of silver layer electrodeposited on copper alloy lead-frame was controlled by the electrodeposition current density. The surface roughness of silver layer electrodeposited from acid aqueous solution was increased up to 2.11 μm, while that electrodeposited from cyanide aqueous solution was around 0.9 μm. The adhesion strength between epoxy resin and copper alloy lead-frame with silver layer was increased to 5.86 MPa with increasing the surface roughness of silver layer up to 1.69 μm. Copper alloy lead-frame with silver layer, which has the surface roughness more than 1.15 μm, showed a conventional level of die bonding and wire bonding properties.
Keywords: electrodeposition / silver / lead-frame / epoxy / adhesion
URI: http://hdl.handle.net/10069/25348
ISSN: 18805574
Type: Departmental Bulletin Paper
Text Version: publisher
Appears in Collections:Volume 41, No. 77

Citable URI : http://hdl.handle.net/10069/25348

All items in NAOSITE are protected by copyright, with all rights reserved.

 

Valid XHTML 1.0! Copyright © 2006-2015 Nagasaki University Library - Feedback Powerd by DSpace