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AA - Materials and Processes for Micro and Nano Technologies

Pore Structure Investigation in Die Attach and Solder joints

keywords INNOVATIVE MATERIALS, INNOVATIVE TECHNOLOGIES, MICROELECTRONICS

Reference persons VALENTINA BERTANA, SERGIO FERRERO, LUCIANO SCALTRITO

Research Groups AA - Materials and Processes for Micro and Nano Technologies

Thesis type EXPERIMENTAL - DEVELOPMENT

Description Porosity is a common defect which occurs in solder joints. Porosity in surface mount joints will potentially cause weakening in joint strength and reduction in electrical and thermal conductivity. It will induce crack initiation and shorten the fatigue life of solder joints. In fact, pores contained in solder joints may intensify the stress and decrease joining strength between components and the PCB board tremendously. [1]

The thesis goal is to investigate pore formation and evolution in die attach and solder joints and discuss possible soldering process enhancements.

The work will be organised as follow:
Literature review
Samples creation
Tests definition
Results characterisation

[1] Xie et al., Porosity Formation and Its Effects on Mechanical Properties of SMT Solder Joints, 1994.


Deadline 30/03/2025      PROPONI LA TUA CANDIDATURA