The goal of this research is to obtain a detailed understanding of indentation-induced flaw nucleation in ceramic materials. A unique high temperature microhardness tester, capable of operating up to 1600 0C, will be used to produce indentations. Indentation sites will be characterized by SEM and TEM in order to determine effect of crystallography, load, and temperature on the deformation mechanisms leading flaw nucleation. Initially, single crystals of alumina, magnesium oxide, and barium titanate will be used, followed by bicrystals.

Agency
National Science Foundation (NSF)
Institute
Division of Materials Research (DMR)
Application #
8920844
Program Officer
AMAR BHALLA
Project Start
Project End
Budget Start
1990-01-15
Budget End
1994-09-30
Support Year
Fiscal Year
1989
Total Cost
$270,000
Indirect Cost
Name
Lehigh University
Department
Type
DUNS #
City
Bethlehem
State
PA
Country
United States
Zip Code
18015