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Effect of attrition milling on the reaction sintering of silicon nitrideSilicon powder was ground in a steel attrition mill under nitrogen. Air exposed powder was compacted, prefired in helium, and reaction sintered in nitrogen-4 v/o hydrogen. For longer grinding times, oxygen content, surface area and compactability of the powder increased; and both alpha/beta ratio and degreee of nitridation during sintering increased. Iron content remained constant.
Document ID
19780023293
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Herbell, T. P. (NASA Lewis Research Center Cleveland, OH, United States)
Glasgow, T. K. (NASA Lewis Research Center Cleveland, OH, United States)
Yeh, H. C. (Cleveland State Univ.)
Date Acquired
September 3, 2013
Publication Date
January 1, 1978
Subject Category
Nonmetallic Materials
Report/Patent Number
NASA-TM-78965
E-9723
DOE/NASA/1040-78/2
Report Number: NASA-TM-78965
Report Number: E-9723
Report Number: DOE/NASA/1040-78/2
Meeting Information
Meeting: Ann. Meeting of the Am. Ceram. Soc.
Location: Detroit
Start Date: May 7, 1978
End Date: May 12, 1978
Accession Number
78N31236
Funding Number(s)
CONTRACT_GRANT: EC-77-A-31-1040
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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