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Article: Research on metals discussed by scientists at University of Seoul.
- Article from:
- Journal of Technology
- Article date:
- April 7, 2009
CopyrightCOPYRIGHT 2009 NewsRX. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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According to a study from Seoul, South Korea, "Beta-SiC powder samples containing 1 wt.% alpha-SiC as a seed and 10 vol.% AlN-Sc2O3 as a sintering additive were hot-pressed at 1900 degrees C for 1 h and subsequently annealed at 2000 degrees C for I h, 3 h and 6 h. When the annealing time was increased, the microstructure changed from equiaxed to elongated grains, which resulted in a self-reinforced microstructure consisting of elongated grains (hexagonal platelet grains in 3-dimensions)."
"The development of a self-reinforced microstructure resulted in significant improvement in toughness. However, the improved toughness was offset by a reduction in strength," ...
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