Tensile and fatigue behavior of polymer supported silver thin films at elevated temperatures

被引：12

作者：

Lee, Yong-Seok ^{[1
]}

Sim, Gi-Dong ^{[2
]}

Bae, Jong -Soo ^{[3
]}

Kim, Ji-Young ^{[1
]}

Lee, Soon-Bok ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Mech Engn, 291 Daehak Ro, Daejeon 34141, South Korea

[2] Johns Hopkins Univ, Dept Mech Engn, Baltimore, MD 21218 USA

[3] Agcy Def Dev, POB 35, Daejeon 34186, South Korea

来源：

MATERIALS LETTERS | 2017年 / 193卷

基金：

新加坡国家研究基金会;

关键词：

Thin films; Fatigue; Failure mechanism; Elevated temperatures; METAL-FILMS; SPECTROSCOPY; DUCTILITY;

D O I：

10.1016/j.matlet.2017.01.111

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Tensile and fatigue tests were conducted at 50 and 70 degrees C for evaluating the mechanical behavior of polyethylene-terephthalate (PET) supported silver (Ag) thin films. The strain amplitude-number of cycles (S-N) curves of Ag/PET at elevated temperatures were acquired for determining the failure life under in situ heating condition. The stretchability at elevated temperature was found to be better than the tensile behavior at room temperature, whereas the fatigue behavior is worse at elevated temperature. The adhesion between silver and PET is better at elevated temperature. However, the tensile and fatigue characteristics were different results because the adhesion of silver and PET is not homogeneous at elevated temperatures. The good adhesion between thin metal films and flexible substrates is not always beneficial effect of the mechanical behavior. Therefore, we suggest a new fatigue failure mechanism for Ag/PET at elevated temperature. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：81 / 84

页数：4

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