TY - JOUR
T1 - Self-diffusion of manganese in AlPdMn icosahedral quasicrystals
AU - Nakajima, H.
AU - Asai, J.
AU - Nonaka, K.
AU - Shinbo, I.
AU - Tsai, A.
AU - Masumoto, T.
PY - 1994/5/15
Y1 - 1994/5/15
N2 - Self-diffusion of 54Mn in Al72Pd20Mn8 icosahedral quasi-crystals has been investigated over the temperature range from 723 to 1022 K. Concentration depth profiles of the radioisotope 54Mn in the AlPdMn quasi-crystal and Al60Pd25Mn15 crystal have been measured by an ion-beam sputter-sectioning technique. The temperature dependence of the self-diffusivity of Mn in Al72Pd20Mn8 icosahedral quasicrystals is expressed as D=(1.10.51.0)×10-10exp(-134.0 ±4.5kJ mol-1/RT)m2s-1 The self-diffusivity of Mn in Al72Pd20Mn8 icosahedral quasicrystals is about two orders of magnitude smaller than that in Al60Pd25Mn15 crystalline alloy. The self-diffusivity of Mn in the quasi-crystal is also three to four orders of magnitude lower than Mn diffusivity in crystalline Al.
AB - Self-diffusion of 54Mn in Al72Pd20Mn8 icosahedral quasi-crystals has been investigated over the temperature range from 723 to 1022 K. Concentration depth profiles of the radioisotope 54Mn in the AlPdMn quasi-crystal and Al60Pd25Mn15 crystal have been measured by an ion-beam sputter-sectioning technique. The temperature dependence of the self-diffusivity of Mn in Al72Pd20Mn8 icosahedral quasicrystals is expressed as D=(1.10.51.0)×10-10exp(-134.0 ±4.5kJ mol-1/RT)m2s-1 The self-diffusivity of Mn in Al72Pd20Mn8 icosahedral quasicrystals is about two orders of magnitude smaller than that in Al60Pd25Mn15 crystalline alloy. The self-diffusivity of Mn in the quasi-crystal is also three to four orders of magnitude lower than Mn diffusivity in crystalline Al.
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U2 - 10.1016/0921-5093(94)90728-5
DO - 10.1016/0921-5093(94)90728-5
M3 - Article
AN - SCOPUS:0028424842
SN - 0921-5093
VL - 181-182
SP - 738
EP - 741
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
IS - C
ER -