Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Science 28 February 1969:
Vol. 163. no. 3870, pp. 935 - 937
DOI: 10.1126/science.163.3870.935
Prev | Table of Contents | Next

Articles

Boron Modifications Produced in an Induction-Coupled Argon Plasma

Don B. Sullenger 1, Kenneth D. Phipps 1, Pyrtle W. Seabaugh 1, Claude R. Hudgens 1, Donald E. Sands 2, and Joseph S. Cantrell 3

1 Monsanto Research Corporation, Mound Laboratory, Miamisburg, Ohio
2 Department of Chemistry, University of Kentucky, Lexington 40506
3 Department of Chemistry, Miami University, Oxford, Ohio 45056

Most of the small particles (50 to 100 micrometers in diameter) of microcrystalline beta-rhombohedral boron that quickly transit an argon plasma maintained within a radio-frequency induction-coupled torch emerge as better crystallized spheroids of the same crystalline form and nearly the same size as the starting material. A few crystals of each of four distinctive, well-faceted habits are formed along with the general product. Three of these types are monocrystals of the beta-rhombohedral polymorph, of the tetragonal-III modification, and of an unreported cubic form of boron. Specimens of the fourth type are polycrystals of another unreported form of boron, apparently consisting of many hexagonal platelets stacked in an imprecise fashion.

To Advertise     Find Products

Science. ISSN 0036-8075 (print), 1095-9203 (online)