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Structure and tensile strength of LaS(1.4)The tensile strength of LaS(1.4) has been estimated by diametral stress testing at room temperature, 800 and 1300 K. Brittle, tensile-type failures were obtained at all temperatures when the crosshead speed was 0.0021 mm/s; however, a 1300 K test at 0.00085 mm/s produced plastic flow. The microstructure of LaS(1.4) consisted of two phases with beta-La2S3 comprising about 15 vol percent of the structure and gamma-La2S3 the remainder. Because of the limited amount of material available for testing, no correlation between microstructure and mechanical strength could be drawn.
Document ID
19870050791
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Whittenberger, J. Daniel
(NASA Lewis Research Center Cleveland, OH, United States)
Smoak, Richard H.
(California Institute of Technology Jet Propulsion Laboratory, Pasadena, United States)
Date Acquired
August 13, 2013
Publication Date
April 1, 1987
Publication Information
Publication: American Ceramic Society, Communications
Volume: 70
ISSN: 0002-7820
Subject Category
Nonmetallic Materials
Accession Number
87A38065
Distribution Limits
Public
Copyright
Other

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