Study of the Impact Performance of Solder Joints by High-Velocity Impact Tests
Source abstract
Abstract
The impact behavior of solder joints was studied using three different high-velocity impact tests: the U-notch Charpy impact test, the no-notch Charpy impact test, and a laboratory-designed drop test. The solder joints were made of five solder alloys, Sn-37Pb, Sn-3.8Ag-0.7Cu, Sn-2.0Ag-0.7Cu, Sn-1.0Ag-0.7Cu, and Sn-0.7Ag-0.7Cu (in wt.%), in which the traditional Cu/solder/Cu butt joint was used. All three impact tests gave the same trend of the impact behavior of the solder joints, with the Sn-37Pb joints having the highest impact resistance and the Sn-3.8Ag-0.7Cu joints having the lowest impact resistance. For the lead-free joints, the Sn-1.0Ag-0.7Cu joints had better impact resistance than the Sn-2.0Ag-0.7Cu joints, and the Sn-2.0Ag-0.7Cu joints better than the Sn-0.7Ag-0.7Cu joints. The impact behavior was correlated well to the fracture morphologies observed by scanning electron microscopy (SEM). Comparison of the three tests showed that the no-notch Charpy impact test is a promising method for evaluating the drop performance of solder joints.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Electronic Packaging and Soldering Technologies · High-Velocity Impact and Material Behavior · Powder Metallurgy Techniques and Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (18)
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