Ultrahigh temperature in situ transmission electron microscopy based bicrystal coble creep in zirconia I: Nanowire growth and interfacial diffusivity
Ultrahigh temperature in situ transmission electron microscopy based bicrystal coble creep in zirconia I: Nanowire growth and interfacial diffusivity
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基于超高温原位透射电子显微镜的氧化锆双晶铜线蠕变 I:纳米线生长和界面扩散率
DOI:
10.1016/j.actamat.2020.08.069
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发表时间:
2020
期刊:
影响因子:
9.4
通讯作者:
García, R. Edwin
中科院分区:
文献类型:
--
作者:
Vikrant, K.S.N.;Grosso, Robson L.;Feng, Lin;Muccillo, Eliana N.S.;Muche, Dereck N.F.;Jawaharram, Gowtham S.;Barr, Christopher M.;Monterrosa, Anthony M.;Castro, Ricardo H.R.;García, R. Edwin
This work demonstrates novel in situ transmission electron microscopy-based microscale single grain boundary Coble creep experiments used to grow nanowires through a solid-state process in cubic ZrO 2 between≈ 1200° C and≈ 2100° C. Experiments indicate Coble creep drives the formation of nanowires from asperity contacts during tensile displacement, which is confirmed by phase field simulations. The experiments also facilitate efficient measurement of grain boundary diffusivity and surface diffusivity. 10 mol% Sc 2 O 3 doped ZrO 2 is found to have a cation grain boundary diffusivity of D g b=(0.056±0.05) exp (− 380, 000±41, 000 R T) m 2 s− 1, and surface diffusivity of D s=(0.10±0.27) exp (− 380, 000±28, 000 R T) m 2 s− 1.
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DOI:
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发表时间:
2010
期刊:
影响因子:
--
作者:
Hans‐Heinrich Möbius;H. Witzmann;D. Gerlach
通讯作者:
D. Gerlach
DOI:
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发表时间:
1982
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2000
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A. Sadowski
DOI:
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发表时间:
2009
期刊:
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通讯作者:
H. Schaefer
DOI:
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发表时间:
2007
期刊:
影响因子:
--
作者:
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通讯作者:
S. B. Chavan