LAMP Joining between Ceramic and Plastic

Joining of dissimilar materials is necessary and important from a manufacturing viewpoint. Therefore, the authors have developed a new laser direct joining method between a metal and a plastic which is named Laser Assisted Metal and Plastic (LAMP) joining method. In this research, LAMP joining was applied to join silicon nitride Si3N4 ceramic and polyethylene terephthalate (PET) engineering plastic, although metal was replaced by ceramic. The tensile shear strength of obtained joints was 3100 N at the maximum, which was strong enough to elongate a PET base plate of 2 mm in thickness and 30 mm in width. Moreover, transmission electron microscopes (TEM) observation demonstrates that the ceramic and the plastic are tightly bonded on atomic or molecular sized level.