A study on optimization of process parameters, microstructure evolution and fracture behavior for full Cu3Sn solder joints in electronic packaging

2016 ◽  
Author(s):  
Peng Yao ◽  
Xiaoyan Li ◽  
Xiaobo Liang ◽  
Bo Yu
Keyword(s):  
Process Parameters ◽  
Microstructure Evolution ◽  
Electronic Packaging ◽  
Fracture Behavior ◽  
Solder Joints ◽  
Optimization Of Process Parameters

Microstructure evolution and microimpact performance of Sn–Ag–Cu solder joints under thermal cycle test

2010 ◽  
Vol 25 (7) ◽  
pp. 1312-1320 ◽  
Author(s):  
Y.L. Huang ◽  
K.L. Lin ◽  
D.S. Liu
Keyword(s):  
Fracture Energy ◽  
Microstructure Evolution ◽  
Thermal Cycle ◽  
Fracture Behavior ◽  
Solder Ball ◽  
Solder Joints ◽  
Whisker Formation ◽  
Structural Variations ◽  
Before And After ◽  
Ball Joints

The microstructure and microimpact performance of Sn1Ag0.1Cu0.02Ni0.05In (SAC101NiIn)/AuNi/Cu solder ball joints were investigated after a thermal cycle test (TCT). The joints show complete bulk fracture behavior before TCT. Moreover, TCT facilitated interfacial fracture behavior with lower fracture energy. The intermetallic compounds (IMCs) formed in the solder joints before and after TCT were investigated. TCT induces a variety of structural variations in the solder joints, including slipping bands, whisker formation, the squeezing of the IMC layer, the formation of cavities, the rotation and pop-up of grain, and the deformation and rotation of the entire joint. The variations in fracture behavior induced by TCT are correlated with the structural variations in the solder joints.

Microstructure evolution and shear fracture behavior of aged Sn3Ag0.5Cu/Cu solder joints

2016 ◽  
Vol 673 ◽  
pp. 167-177 ◽  
Author(s):  
Xiaowu Hu ◽  
Tao Xu ◽  
Leon M. Keer ◽  
Yulong Li ◽  
Xiongxin Jiang
Keyword(s):  
Microstructure Evolution ◽  
Fracture Behavior ◽  
Solder Joints ◽  
Shear Fracture

Optimization of Process Parameters for Production of Pectinase using Bacillus Subtilis MF447840.1

2019 ◽  
Vol 13 (1) ◽  
pp. 69-73 ◽  
Author(s):  
Ram Balak Mahto ◽  
Mukesh Yadav ◽  
Soumya Sasmal ◽  
Biswnath Bhunia
Keyword(s):  
Bacillus Subtilis ◽  
Process Parameters ◽  
Volume Ratio ◽  
Optimum Process ◽  
Agitation Rate ◽  
Fermentation Condition ◽  
Optimization Of Process Parameters ◽  
Food And Beverage ◽  
Pectinase Production ◽  
Sterile Product

Background: Pectinase enzyme has immense industrial prospects in the food and beverage industries. </P><P> Objective: In our investigation, we find out the optimum process parameters suitable for better pectinase generation by Bacillus subtilis MF447840.1 using submerged fermentation. </P><P> Method: 2% (OD600 nm = 0.2) of pure Bacillus subtilis MF447840.1 bacterial culture was inoculated in sterile product production media. The production media components used for this study were 1 g/l of pectin, 2 g/l of (NH4)2SO4, 1 g/l of NaCl, 0.25 g/l of K2HPO4, 0.25 g/l of KH2PO4 and 1 g/l of MgSO4 for pectinase generation. We reviewed all recent patents on pectinase production and utilization. The various process parameters were observed by changing one variable time method. </P><P> Results: The optimum fermentation condition of different parameters was noticed to be 5% inoculums, 25% volume ratio, temperature (37°C), pH (7.4) and agitation rate (120 rpm) following 4 days incubation. </P><P> Conclusion: Maximum pectinase generation was noticed as 345 ± 12.35 U following 4 days incubation.

Recent trends in approaches for optimization of process parameters for the production of microbial cellulase from wastes

2021 ◽  
Author(s):  
Dibyajit Lahiri ◽  
Moupriya Nag ◽  
Dipro Mukherjee ◽  
Sayantani Garai ◽  
Ritwik Banerjee ◽  
...  
Keyword(s):  
Process Parameters ◽  
Optimization Of Process Parameters ◽  
Recent Trends
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