Abstract:Summary:The goal of the program was to fabricate nanocrystalline ceramics from superplastically deforming powder with nanocrystalline microstructures using a new approach. Rather than starting with nano-sized powders, we used powders 2-25 μm in diameter (average 16 μm) having a nanoscale microstructure. The major challenge was to hot press or to hot forge the powders to full density while maintaining the nanostructure. The second goal was to achieve transparent nanocrystalline ceramics.
Accomplishments:The fir… Show more
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