ISSN:
1551-2916
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Layered composites of alternate layers of pure Al2O3(thickness of 125 μ m) and 85 vol% Al2O3-15 vol% ZrO2 that was stabilized with 3 mol% Y2O3(thickness of 400 μ m) were obtained by sequential slip casting and then fired at either 1550° or 1700°C. Constant-strain-rate tests were conducted on these materials in air at 1400°C at an initial strain rate of 2 × 10-5 s-1. The load axis was applied both parallel and perpendicular to the layer interfaces. Catastrophic failure occurred for the composite that was fired at 1700°C, because of the coalescence of cavities that had developed in grain boundaries of the Al2O3 layers. In comparison, the composite that was fired at 1550°C demonstrated the ductility of the Al2O3+YTZP layer, but at a flow stress level that was determined by the Al2O3 layer.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1151-2916.1997.tb03097.x
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