Microstructure, elastic modulus and shear strength of alumina (Al2O3) nanoparticles-doped tin–silver–copper (Sn–Ag–Cu) solders on copper (Cu) and gold/nickel (Au/Ni)-plated Cu substrates

2015 ◽  
Vol 26 (9) ◽  
pp. 7039-7048 ◽  
Author(s):  
Asit Kumar Gain ◽  
Liangchi Zhang ◽  
Y. C. Chan
Keyword(s):  
Shear Strength ◽  
Elastic Modulus ◽  
Al2o3 Nanoparticles ◽  
Silver Copper ◽  
Cu Substrates ◽  
Tin Silver Copper

Test Methods for Mechanical Properties of Structural Adhesives

2010 ◽  
Vol 97-101 ◽  
pp. 814-817 ◽  
Author(s):  
Jun Deng
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Shear Strength ◽  
Elastic Modulus ◽  
Butt Joint ◽  
Test Methods ◽  
Joint Specimen ◽  
Lap Shear ◽  
Better Than

One of the greatest drawbacks to predicting the behaviour of bonded joints has been the lack of reliable data on the mechanical properties of adhesives. In this study, methods for determining mechanical properties of structural adhesive were discussed. The Young’s modulus, Poisson’s ratio and tensile strength of the adhesive were tested by dogbone specimens (bulk form) and butt joint specimens (in situ form). The shear modulus and shear strength were test by V-notched specimens (bulk form) and thick adherend lap-shear (TALS) joint specimens (in situ form). The test results show that the elastic modulus provided by the manufacturer is too low, the dogbone specimen is better than the butt joint specimen to test the tensile strength and elastic modulus and the TALS joint specimen is better than the V-notched specimen to test the shear strength.

Microstructure of Transient Liquid Phase Sintering Joint by Sn-Coated Cu Particles for High Temperature Packaging

2015 ◽  
Vol 2015 (1) ◽  
pp. 000449-000452 ◽  
Author(s):  
Xiangdong Liu ◽  
Hiroshi Nishikawa
Keyword(s):  
Shear Strength ◽  
High Temperature ◽  
Liquid Phase ◽  
Applied Pressure ◽  
Transient Liquid Phase ◽  
Liquid Phase Sintering ◽  
Thermally Stable ◽  
Bonding System ◽  
Cu Substrates ◽  
Transient Liquid Phase Sintering

We develop a transient liquid phase sinter (TLPS) bonding using Sn-coated Cu micro-sized particles. With this bonding process, a thermally stable joint comprising Cu3Sn phase and a dispersion of ductile Cu particles can be obtained. The particle paste, which contained Cu particles with a thin Sn coating and terpineol, was used to join Cu substrates. The setup was bonded at 300 °C for 30s under an applied pressure of 10 MPa using a thermo-compression bonding system under a formic acid gas atmosphere for reducing the oxide layer on the Sn coating and the Cu substrate. After bonding, the TLPS joint showed a thermally stable microstructure with a good shear strength, which was fully consisted of Cu3Sn intermetallic compounds matrix and embedded ductile Cu particles. The kinetics of the microstructure transformation and high temperature reliability of the TLPS joint were investigated. After 300 °C isothermal aging for 200h, the shear strength and microstructure of the TLPS joints showed almost unchanged. The results demonstrate that joint with high-melting-point obtained by the TLPS bonding using Sn-coated Cu particle paste has the potential to fulfill the requirement of high temperature electronic packaging.

Flame synthesis of mixed tin-silver-copper nanopowders and conductive coatings

AIChE Journal ◽  
2015 ◽  
Vol 62 (2) ◽  
pp. 408-414 ◽  
Author(s):  
Munish K. Sharma ◽  
Di Qi ◽  
Raymond D. Buchner ◽  
Mark T. Swihart ◽  
William J. Scharmach ◽  
...  
Keyword(s):  
Flame Synthesis ◽  
Conductive Coatings ◽  
Silver Copper ◽  
Tin Silver Copper ◽  
Copper Nanopowders

scholarly journals Effect of Cooling Rate on Microstructure and Strength Properties of Tin-Silver-Copper Solder Ball Bonding

2001 ◽  
Vol 42 (5) ◽  
pp. 761-768 ◽  
Author(s):  
Kunihiro Noguchi ◽  
Mayumi Ikeda ◽  
Isao Shimizu ◽  
Yoshito Kawamura ◽  
Yasuhide Ohno
Keyword(s):  
Cooling Rate ◽  
Solder Ball ◽  
Strength Properties ◽  
Silver Copper ◽  
Ball Bonding ◽  
Tin Silver Copper

scholarly journals Experimental Research on the Mechanical Behavior of Lime-Treated Soil under Different Loading Rates

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Yue Qiang ◽  
Yulong Chen
Keyword(s):  
Shear Strength ◽  
Elastic Modulus ◽  
Internal Friction ◽  
Mechanical Behavior ◽  
Loading Rate ◽  
Friction Angle ◽  
Internal Friction Angle ◽  
Treated Soil ◽  
Loading Rates ◽  
Lime Content

In order to study the mechanical behavior of lime-treated soil under different loading rates, a series of monotonous three-axial compression tests are carried out under different lime contents, different loading rates, and different curing periods. The test results indicate that the lime content can significantly improve the mechanical behaviors of soil, such as shear strength and elastic modulus. On the other hand, three-axial compression test of soil is carried out under the loading rate ranging from 0.1%/min to 8%/min. Experimental results indicate that the mechanical behavior of lime-treated soil is sensitive to loading rate. Besides, the corresponding relationship between internal friction angle, cohesion, lime content, and loading rate is discussed. The results indicate that the loading rate almost has no influence on internal friction angle but significant influence on lime content. Cohesion is affected by lime content and loading rate. Shear strength, elastic modulus, and cohesion all increase with the increase of loading rate. Longer curing period is associated with greater parameter value. Shear strength, elastic modulus, and internal friction angle all firstly increase and then decrease when lime content increases, which all reach the maximum at 6%.

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