Název: Comparison of Al/Ni and Co/Ni Interdiffusion Coefficients in Pseudobinary Sections of Ni3Al-Co alloys
Autoři: Gazda, Aleš ; Rothová, Věra ; Čermák, Jiří
Typ dokumentu: Příspěvky z konference
Konference/Akce: Diffusion and thermodynamics of materials /8./, Brno (CZ), 2002-09-04 / 2002-09-06
Rok: 2002
Jazyk: eng
Abstrakt: Interdiffusion in Ni3Al intermetallic alloyed by 0 - 19 at % Co was studied in three pseudo-binary sections: c(Al) = 22, c(Co) = 3.5, and c(Co) = 16 (c in at. %). The experiments were carried out at temperatures between 900 and 1200°C. Since no detectable shift of tungsten inert markers was observed, it was concluded that the intrinsic diffusivities of element pairs with varying concentration (Al/Ni and Co/Ni) in respective pseudo-binary sections are approximately equal one to another. The interdiffusion in pseudo-binary alloys Al/Ni (c(Co) = const.) runs slightly faster than that in pseudo-binary alloys Ni/Co (c(Al) = const.). The relations between the measured interdiffusion coefficients in the Ni3Al-Co ordered gamma prime phase agree well with literature data for the interdiffusion coefficients in both pure gamma prime and Co alloyed gamma prime phases and also for the disordered Al-Ni and Co-Ni solid solutions. They are qualitatively explained by interaction between constituents and/or by their interaction with vacancies.
Klíčová slova: interdiffusion; nickel aluminides
Číslo projektu: CEZ:AV0Z2041904 (CEP), GA106/00/0173 (CEP)
Poskytovatel projektu: GA ČR
Zdrojový dokument: Diffusion and Thermodynamics of materials /8./

Instituce: Ústav fyziky materiálů AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný v příslušném ústavu Akademie věd ČR.
Původní záznam: http://hdl.handle.net/11104/0074811

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-26531


Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Ústav fyziky materiálů
Konferenční materiály > Příspěvky z konference