Electromigration Microstructure and Properties of Sn2.5Ag0.7Cu0.1RE/Cu Solder Joints
Journal Title: 河南科技大学学报（自然科学版） - Year 2018, Vol 39, Issue 2
Abstract
The effect of temperature on electromigration microstructure and properties of Sn2. 5 Ag0. 7 Cu 0. 1 RE/Cu solder joints was investigated. With the ambient temperature rising from 100 ℃ to 140 ℃, and the power on time extending from 24 h to 72 h, the cathodic intermetallic compound ( IMC) Cu6Sn5 became thinner, and the morphology was transformed from serrated to scallop. Meanwhile, the anodic IMC was gradually thickened, and the morphology was transformed from scallop to a raised hillock. Thin Cu3Sn layer was formed on the joint of parent metal. The increased thickness of the IMC on the anode side was larger than the decreased thickness of the IMC on the cathode side. The shear strength of Sn2. 5 Ag0. 7 Cu0. 1 RE/Cu solder joints was continually decreased. With the increase of temperature, the fracture mechanism of the shear fracture transforms from mixed fracture occurred in the brazing zone to brittle fracture occurred in the cathodic IMC layer.
Authors and Affiliations
Mengmeng SUN, Keke ZHANG, Chao ZHANG, Ning MA, Huigai WANG
Keywords
Related Articles
- EP ID EP464913
- DOI -
- Views 73
- Downloads 0
Size Effect of Glass Fiber Reinforced Plastic Confined Concrete Column
Three glass fiber reinforced plastic( GFRP) confined reinforced concrete columns and three unconfined reinforced concrete columns were tested and the finite element analysis was carried out on 15 specimens. The influence...
Experimental Study on Cleaning Device of Peanut Pods
The peanut pods cleaning device was mainly composed of collecting light impurities device and separating stems device.The former used the cross-flow fan to remove light impurities from the peanut mixture by inhaling, and...
Applications of Inverse Synthetic Aperture Imaging Laser Reader to Image Reconstruction for Small Space Target
1
Experiment on Reducing Emissions of Non-road Diesel Engine
Effects of injection pressure,injection timing,injector hole diameter and injector nozzle protrusion on exhaust emissions from a N490 naturally aspirated direct injection diesel engine were studied in order to reduce its...
Damage Imaging Technique of Plate-like Structures with Guided Waves Phased Array
The method of guided waves phased array beamforming formula and damage imaging method based on the delay-and-sum principle in thin metal plate structure were presented.Moreover, the phased array beamforming and imaging a...