Reliability Implications of Solder in Multiwire Modules under Dynamic Mechanical Loading: Preprint
Two generations of multiwire modules were studied under dynamic mechanical loading (DML). The earlier generation module was found to use an In-based solder alloy, and the current generation a Bi-based alloy. The earlier generation module degraded significantly under DML with increasing resistance, w...
| Main Authors: | , , , , , |
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| Language: | unknown |
| Published: |
2021
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| Subjects: | |
| Online Access: | http://www.osti.gov/servlets/purl/1811298 https://www.osti.gov/biblio/1811298 |
| Summary: | Two generations of multiwire modules were studied under dynamic mechanical loading (DML). The earlier generation module was found to use an In-based solder alloy, and the current generation a Bi-based alloy. The earlier generation module degraded significantly under DML with increasing resistance, while the state-of-the-art module did not demonstrate degradation under DML. The degradation in the earlier module was attributed to damage at the solder-gridline interfaces. Atomic force microscopy scratch testing estimated the wear resistance of each solder alloy to assess susceptibility to degradation. Bi-based alloys appear to be more wear resistant than In-based alloys, consistent with the DML results. These results indicate that current multiwire designs may have higher mechanical durability than earlier generations. |
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