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 National Science
Foundation Award #9019383 |
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Transformation Toughening in Zirconia-Based Ceramics
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| Investigator(s): |
Arthur Heuer (PI)
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| Sponsor: |
Case Western Reserve University, OH 44106 2163684510
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| Start Date/Expiration Date |
1991-02-01 to 1996-04-30 (amended 1995-06-28) |
| Awarded Amount to Date: |
$734,000 |
| Abstract: This proposal is for the continuation of research on transformation toughening in ZrO2-containig ceramics. Specifically, the research will focus on i) making dense transformation toughened Mg-PSZ with fine grain size, in contrast to the current generation of tough Mg- PSZ's which are course grained, porous, and contain unwanted second phases, ii)studying structure-property relationships in ternary Mg, Y-PSZ's, particularly probing the effect of particle morphology and hence coherency stresses, on the crack tip stress-induced transformation, iii) Studying the mechanics of stress-induced subcritical transformation which in "supertough" Mg-PSZ can occur before any visible surface microcracks, and iv) studying transformation around microhardness indents in Y-PSZ single crystals, particularly the dislocation-nucleated autocatalytic transformation. |
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| NSF Org: |
DMR - Division of Materials Research |
| Award Number: |
9019383 |
| Award Instrument: |
Continuing grant |
| Program Manager: |
Liselotte J. Schioler
DMR Division of Materials Research
MPS Directorate for Mathematical & Physical Sciences
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| NSF Program(s): |
CERAMICS, METALS, CERAMICS, & ELEC MATRS, METALS, CERAMICS, & ELEC MATRS
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| Field Application(s): |
Engineering-Metallurgy & Material, Materials Research, Metals, Ceramics & Electronic Materials |
| Program Reference Code(s): |
CERAMICS, 1774
SINGLE DIVISION/UNIVERSITY, 9161 |
| Program Element Code(s): |
1774
METALS, CERAMICS, & ELEC MATRS, 1715
, 1715
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