Analytical electron microscopy study of Ni/Ni-8 mol% Ti diffusion couples

N. Komai; M. Watanabe; Z. Horita; T. Sano; M. Nemoto

doi:10.1016/S1359-6454(98)00081-0

Analytical electron microscopy study of Ni/Ni-8 mol% Ti diffusion couples

N. Komai, M. Watanabe, Z. Horita, T. Sano, M. Nemoto

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

Abstract

Analytical electron microscopy (AEM) has been applied to the interdiffusivity measurements and microstructural observations in Ni/Ni-8 mol% Ti diffusion couples. The high spatial resolution attained by AEM revealed that there is an effect of annealing atmosphere on the concentration profiles and microstructures within a range of several microns around the Kirkendall interface: the distortion of concentration profiles and the formation of Ti-rich particles and/or regions were observed near the interface. The interdiffusivities measured using the Sauer-Freise technique from the concentration profiles without the effect of annealing atmosphere were in good agreement with the reported values of the interdiffusivities and the impurity diffusivities of Ti in Ni, but were higher by an order of magnitude than the self-diffusivities of Ni in Ni.

Original language	English
Pages (from-to)	4443-4451
Number of pages	9
Journal	Acta Materialia
Volume	46
Issue number	12
DOIs	https://doi.org/10.1016/S1359-6454(98)00081-0
Publication status	Published - Jul 24 1998

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Polymers and Plastics
Metals and Alloys

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10.1016/S1359-6454(98)00081-0

Cite this

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title = "Analytical electron microscopy study of Ni/Ni-8 mol% Ti diffusion couples",

abstract = "Analytical electron microscopy (AEM) has been applied to the interdiffusivity measurements and microstructural observations in Ni/Ni-8 mol% Ti diffusion couples. The high spatial resolution attained by AEM revealed that there is an effect of annealing atmosphere on the concentration profiles and microstructures within a range of several microns around the Kirkendall interface: the distortion of concentration profiles and the formation of Ti-rich particles and/or regions were observed near the interface. The interdiffusivities measured using the Sauer-Freise technique from the concentration profiles without the effect of annealing atmosphere were in good agreement with the reported values of the interdiffusivities and the impurity diffusivities of Ti in Ni, but were higher by an order of magnitude than the self-diffusivities of Ni in Ni.",

author = "N. Komai and M. Watanabe and Z. Horita and T. Sano and M. Nemoto",

note = "Funding Information: This work was supported by a Grant-in-Aid for Scientific Research from the Ministry of Education, Science, Sports and Culture of Japan. Electron microscopy was performed in the HVEM Laboratory of Kyushu University.",

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T1 - Analytical electron microscopy study of Ni/Ni-8 mol% Ti diffusion couples

AU - Komai, N.

AU - Watanabe, M.

AU - Horita, Z.

AU - Sano, T.

AU - Nemoto, M.

N1 - Funding Information: This work was supported by a Grant-in-Aid for Scientific Research from the Ministry of Education, Science, Sports and Culture of Japan. Electron microscopy was performed in the HVEM Laboratory of Kyushu University.

PY - 1998/7/24

Y1 - 1998/7/24

N2 - Analytical electron microscopy (AEM) has been applied to the interdiffusivity measurements and microstructural observations in Ni/Ni-8 mol% Ti diffusion couples. The high spatial resolution attained by AEM revealed that there is an effect of annealing atmosphere on the concentration profiles and microstructures within a range of several microns around the Kirkendall interface: the distortion of concentration profiles and the formation of Ti-rich particles and/or regions were observed near the interface. The interdiffusivities measured using the Sauer-Freise technique from the concentration profiles without the effect of annealing atmosphere were in good agreement with the reported values of the interdiffusivities and the impurity diffusivities of Ti in Ni, but were higher by an order of magnitude than the self-diffusivities of Ni in Ni.

AB - Analytical electron microscopy (AEM) has been applied to the interdiffusivity measurements and microstructural observations in Ni/Ni-8 mol% Ti diffusion couples. The high spatial resolution attained by AEM revealed that there is an effect of annealing atmosphere on the concentration profiles and microstructures within a range of several microns around the Kirkendall interface: the distortion of concentration profiles and the formation of Ti-rich particles and/or regions were observed near the interface. The interdiffusivities measured using the Sauer-Freise technique from the concentration profiles without the effect of annealing atmosphere were in good agreement with the reported values of the interdiffusivities and the impurity diffusivities of Ti in Ni, but were higher by an order of magnitude than the self-diffusivities of Ni in Ni.

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Analytical electron microscopy study of Ni/Ni-8 mol% Ti diffusion couples

Abstract

All Science Journal Classification (ASJC) codes

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