Effect of milling and leaching on the structure of sintered siliconThe effects of attrition milling and acid leaching on the sintering behavior and the resultant structures of two commercial silicon powders were investigated. Sintering was performed in He for 16 hours at 1200, 1250, and 1300 C. Compacts of as-received Si did not densify during sintering. Milling reduced the average particle size to below 0.5 microns and enhanced densification (1.75 g/cc). Leaching milled Si further enhanced densification (1.90 g/cc max.) and decreased structural coarsening. After sintering, the structure of the milled and leached powder compacts appears favorable for the production of reaction bonded silicon nitride.
Document ID
19810038125
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Yeh, H. C. (Cleveland State University Cleveland, Ohio, United States)
Glasgow, T. K. (Cleveland State Univ. OH, United States)
Herbell, T. P. (NASA Lewis Research Center Cleveland, Ohio, United States)
Date Acquired
August 11, 2013
Publication Date
April 1, 1980
Subject Category
Nonmetallic Materials
Meeting Information
Meeting: Annual Meeting of the American Ceramic Society