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The effect of Y and Zr on the oxidation of NiAl

Book ·
OSTI ID:72548
; ;  [1];  [2]
  1. Max-Planck-Inst. fuer Metallforschung, Stuttgart (Germany). Inst. fuer Werkstoffwissenschaft
  2. National Research Council of Canada, Ottawa, Ontario (Canada). Inst. for Microstructural Sciences
The effect of Y and Zr on the oxidation behavior of NiAl has been investigated using high resolution SIMS and analytical TEM. {sup 18}O tracer experiments in conjunction with SIMS showed that Y and Zr reduce the outward transport of cations during the growth of the Al{sub 2}O{sub 3} scale. Complementary STEM-EDS measurements revealed segregation of Y and Zr at the metal/oxide interface as well as the grain boundaries in the Al{sub 2}O{sub 3} scale. The amounts of segregation at both the interface and grain boundary were calculated to be less than one monolayer.
OSTI ID:
72548
Report Number(s):
CONF-941144--; ISBN 1-55899-265-0
Country of Publication:
United States
Language:
English

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