Structure and Tensile Strength of LaS1.4
- 1 April 1987
- journal article
- Published by Wiley in Journal of the American Ceramic Society
- Vol. 70 (4) , C‐90-C‐92
- https://doi.org/10.1111/j.1151-2916.1987.tb04996.x
Abstract
The tensile strength of LaS1.4 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 2.1 × 10−3 mm/s; however, a 1300 K test at 8.5 × 10−4 mm/s produced plastic flow. The microstructure of LaS1.4 consisted of two phases with β‐La2S3 comprising about 15 vol% of the structure and γ‐La2S3 the remainder. Because of the limited amount of material available for testing, no correlation between microstructure and mechanical strength could be drawn.Keywords
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