Temperature Dependence on Tensile Mechanical Properties of Sintered Silver Film
1
ROHM Co., Ltd., Kyoto 615-8585, Japan
2
Faculty of Engineering, Uzumasa, Kyoto University of Advanced Science, Kyoto 615-8577, Japan
3
Department of Mechanical Engineering, Yakusa, Aichi Institute of Technology, Toyota 470-0392, Japan
*
Author to whom correspondence should be addressed.
Materials 2020, 13(18), 4061; https://doi.org/10.3390/ma13184061
Received: 6 August 2020 / Revised: 7 September 2020 / Accepted: 11 September 2020 / Published: 13 September 2020
(This article belongs to the Special Issue Micro/Nanomechanics: From Theory to Application)
This paper investigates the influence of temperature on tensile mechanical properties of sintered silver (s-Ag) films with 8–10 μm in thickness for fundamental reliability design of semiconductor systems. The s-Ag film sintered under a pressure of 60 MPa possesses the porosity (p) around 5% determined from cross-sectional scanning electron microscope (SEM) images. The stress–strain (S-S) curves of s-Ag and pure silver (p-Ag) films are obtained using originally designed uniaxial tensile tester at temperatures from 25 °C to 150 °C. The S-S curves of p-Ag indicate ductile behavior irrespective of temperature, whereas those of s-Ag indicate brittle-ductile transition at 120 °C. Compared with p-Ag, s-Ag possesses low Young’s modulus (E) and high ultimate tensile strength (UTS) below 80 °C. The mechanism of brittle-ductile transition is discussed based on fracture surface observation results.
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Keywords:
tensile mechanical properties; S-S curves; sintered silver; porosity; fracture mechanism; reliability design
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MDPI and ACS Style
Wakamoto, K.; Mochizuki, Y.; Otsuka, T.; Nakahara, K.; Namazu, T. Temperature Dependence on Tensile Mechanical Properties of Sintered Silver Film. Materials 2020, 13, 4061. https://doi.org/10.3390/ma13184061
AMA Style
Wakamoto K, Mochizuki Y, Otsuka T, Nakahara K, Namazu T. Temperature Dependence on Tensile Mechanical Properties of Sintered Silver Film. Materials. 2020; 13(18):4061. https://doi.org/10.3390/ma13184061
Chicago/Turabian StyleWakamoto, Keisuke; Mochizuki, Yo; Otsuka, Takukazu; Nakahara, Ken; Namazu, Takahiro. 2020. "Temperature Dependence on Tensile Mechanical Properties of Sintered Silver Film" Materials 13, no. 18: 4061. https://doi.org/10.3390/ma13184061
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