1990 MRS Spring Meeting
San Francisco, California
Samples of high Tc superconductors and metal powders have been prepared for Scanning and Transmission Electron Microscopy examination by a novel method. Dental amalgam, commonly used for filling cavities in teeth by dentists, has been used as a binding agent to hold the sample particulate together during sample preparation. The amalgam was pressed into a small rod 3 mmn in diameter and samples were prepared by cutting slices from the rod followed by mechanical grinding and ion milling to perforation. This technique is extremely easy and offers several advantages over other preparation methods. Experiments revealed difficulties due to preferential sputtering yield, but generally these could be overcome and good thermal and electrical properties of the amalgam partially offset the former inconveniences. It should be possible to use this technique for any number of materials, including ceramic materials and small non-spherical particulate.
Materials Research Society
Chumbley, L. Scott; Laabs, F. C.; and Sanders, S. C., "The Preparation of Fine Particulate for Electron Microscopy Investigations Using Dental Amalgam" (1990). Ames Laboratory Conference Papers, Posters, and Presentations. 81.