SEM/TEM of the Month

Don't look now, but Solder Man is winking at you. Dana Fox captured this image at MCNC-RDI (Research Triangle Park, N.C.) while he was imaging samples of metallic powders for a customer. The tin and lead phases are easily identified in this secondary electron image. Apparently, a splash of solder affixed itself to another sphere during manufacturing, while a smaller diameter sphere and a "defect" just happened to locate themselves in the most appropriate location.

Please send submissions for SEM/TEM of the Month to Peter Singer, Editor-in-Chief, 58 Summer St., Andover, MA 01810 USA. E-mail: sieditor@aol.com