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Tracer diffusion in pure and boron-doped Ni/sub 3/Al

Conference ·
OSTI ID:5048711
; ;
Diffusion of /sup 63/Ni has been measured in polycrystalline Ni/sub 3/Al as a function of temperature, Al concentration, and boron doping. Volume and grain-boundary diffusion of /sup 60/Co and /sup 68/Ge has been measured in undoped Ni/sub 3/Al. The results are discussed in terms of the defect structure of Ni/sub 3/Al, and it is shown that the vacancy behavior in the bulk is not responsible for the increased segregation of boron to the grain boundaries in hypostoichiometric alloys. 11 refs., 4 figs., 1 tab.
Research Organization:
Illinois Univ., Urbana (USA); Argonne National Lab., IL (USA)
DOE Contract Number:
W-31109-ENG-38; AC02-76ER01198
OSTI ID:
5048711
Report Number(s):
CONF-8710219-3; CONF-8710219-; ON: DE88009945
Country of Publication:
United States
Language:
English

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Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ALLOYS
ALUMINIUM ALLOYS
ATOM TRANSPORT
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BORON ADDITIONS
BORON ALLOYS
COBALT 60
COBALT ISOTOPES
CRYSTAL STRUCTURE
DAYS LIVING RADIOISOTOPES
DIFFUSION
DOPED MATERIALS
ELECTRON CAPTURE RADIOISOTOPES
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
GERMANIUM 68
GERMANIUM ISOTOPES
GRAIN BOUNDARIES
HIGH TEMPERATURE
INTERMEDIATE MASS NUCLEI
INTERMETALLIC COMPOUNDS
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPE APPLICATIONS
ISOTOPES
MATERIALS
MICROSTRUCTURE
MINUTES LIVING RADIOISOTOPES
NEUTRAL-PARTICLE TRANSPORT
NICKEL 63
NICKEL ALLOYS
NICKEL BASE ALLOYS
NICKEL ISOTOPES
NUCLEI
ODD-ODD NUCLEI
RADIATION TRANSPORT
RADIOISOTOPES
SEGREGATION
TEMPERATURE DEPENDENCE
TRACER TECHNIQUES
VERY HIGH TEMPERATURE
YEARS LIVING RADIOISOTOPES