Phase instability in ZrO{sub 2}{endash}NiAl functionally graded materials

Journal Article · Wed Oct 01 04:00:00 EDT 1997 · Journal of Materials Research

DOI:https://doi.org/10.1557/JMR.1997.0344· OSTI ID:554342

He, Y; Subramanian, V; Lannutti, J J ^[1]

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1. Department of Materials Science and Engineering, Ohio State University, Columbus, Ohio 43210 (United States)

Sedimentation in organic solvents was followed by hot-pressing to produce 2 mole{percent} yttria stabilized zirconia-NiAl functionally graded materials (FGM{close_quote}s). These FGM{close_quote}s were better able to accommodate high levels of residual stress than alumina-NiAl FGM{close_quote}s; this is possibly due to enhanced tetragonal phase retention. However, we found that the zirconia layer in these FGM{close_quote}s subsequently experiences room temperature transformation of t-ZrO{sub 2} to m-ZrO{sub 2}. {copyright} {ital 1997 Materials Research Society.}

• OSTI ID: 554342
• Journal Information: Journal of Materials Research, Journal Name: Journal of Materials Research Journal Issue: 10 Vol. 12; ISSN JMREEE; ISSN 0884-2914
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM COMPOUNDS
CHEMICAL PREPARATION
COMPOSITE MATERIALS
CRYSTAL-PHASE TRANSFORMATIONS
INTERMETALLIC COMPOUNDS
MECHANICAL PROPERTIES
NICKEL COMPOUNDS
PHASE STUDIES
ZIRCONIUM OXIDES