Shear fracture resistance enhancement through micropatterning on copper substrate for sintered nano silver joints
Source abstract
Abstract
Enhancement of the fracture resistance for sintered silver joints has been one of the critical issues that considered frequently in engineering practice. In this paper, different micropatterned sintered silver joints were fabricated. Through end notch flexural test, the load displacement curves for various kinds of micropatterned joints are presented. The shearing fracture toughness and shearing fracture characteristics for different micropatterned joints are also given. The maximum shearing fracture toughness is obtained under the grid groove samples with the highest shearing fracture toughness obtained at 356.95 ± 27.45 J/m 2 , which is about 7.8 times of that without micropatterned joints. It is also found that the shearing fracture toughness is strongly dependent on the groove depth of the micropatterns. The cracking morphology shows that the crack extension was mainly in a cohesive mode but was also associated with locally interfacial debonding failure that occurred at the groove locus. Although the micropatterns lead to the increase of shearing fracture toughness of adhesively bonded joints and even some of the tested P- δ curves shows the ductile fracture manner, the macro fracture morphology of the crack in sintered silver shows that the cracking in micropatterned joints still presents brittle fracture manner.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Electronic Packaging and Soldering Technologies · Metal Forming Simulation Techniques · Advanced Welding Techniques Analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (47)
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