Anion grain boundary diffusion in Cr/sub 2/O/sub 3/ and Cr/sub 2/O/sub 3/-0. 09 weight percent Y/sub 2/O/sub 3/

Conference · Wed Jun 01 00:00:00 EDT 1988

OSTI ID:6482949

King, W E; Park, J H

Anion diffusivities in the lattice and along grain boundaries have been measured on sintered polycrystals of Cr/sub 2/O/sub 3/ and Cr/sub 2/O/sub 3/-0.09 weight percent Y/sub 2/O/sub 3/ at 1100/degree/C and at the oxygen partial pressure corresponding to that of the Cr/Cr/sub 2/O/sub 3/ equilibrium at that temperature. Results show that under the same conditions, anion diffusion is significantly faster than cation diffusion. The results are discussed in terms of their implications for the reactive element effect on high temperature oxidation of chromia forming alloys. 10 refs., 3 figs., 1 tab.

• Research Organization: Lawrence Livermore National Lab., CA (USA); Argonne National Lab., IL (USA)
• DOE Contract Number: W-7405-ENG-48; W-31109-ENG-38
• OSTI ID: 6482949
• Report Number(s): UCRL-98955; CONF-880408-45; ON: DE89006281
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ANIONS
ATOM TRANSPORT
CATIONS
CHALCOGENIDES
CHARGED PARTICLES
CHROMIUM COMPOUNDS
CHROMIUM OXIDES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTALS
DIFFUSION
EVEN-EVEN NUCLEI
GRAIN BOUNDARIES
IONS
ISOTOPE APPLICATIONS
ISOTOPES
LIGHT NUCLEI
MICROSTRUCTURE
NEUTRAL-PARTICLE TRANSPORT
NUCLEI
OXIDES
OXYGEN 18
OXYGEN COMPOUNDS
OXYGEN ISOTOPES
POLYCRYSTALS
RADIATION TRANSPORT
STABLE ISOTOPES
TIME DEPENDENCE
TRACER TECHNIQUES
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES