ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
The large-scale Al2O3/YSZ ceramic plates were prepared by combustion synthesis under highgravity, the ceramics were mainly composed of random-oriented rod-shaped grains, and within therod-shaped grain aligned nano-submicron YSZ fibers were embedded. Compared to thehigh-performance directionally solidified ceramics, the hardness, flexural strength and fracture toughnessof the eutectic ceramics obtained in the experiment increased by 40.7~55.1%, 9.6~26.0% and172.0~240.0%, respectively. The increase in hardness and strength of the ceramics could be attributed tonano-submicron YSZ fibers and inter-phase spacing and the refinement of the eutectic grains; meanwhile,high-energy, large-angle boundaries between rod-shaped grains could introduce strong tougheningmechanisms involving crack-bridging and pull-out of rod-shaped eutectics
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.368-372.771.pdf
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