Diffusion of Hydrogen in the Ni30Ti50Cu20 Shape Memory Alloy

Giovanni Mazzolai; A. Biscarini; B. Coluzzi; Fabio M. Mazzolai; U. Straube

doi:10.4028/www.scientific.net/SSP.115.51

Paper Titles

Mechanical Spectroscopy, Internal Friction and Relaxation Phenomena in Solids – Suggested Reading
p.15

Mechanical Spectroscopy of Quasicrystals
p.25

The Snoek Effect in Ternary BCC Alloys. A Review
p.37

Hydrogen Interaction with Dissolved Atoms and Relaxation Properties of Metal Solid Solutions
p.41

Diffusion of Hydrogen in the Ni₃₀Ti₅₀Cu₂₀ Shape Memory Alloy
p.51

Specific Properties of Industrial High-Damping Fe-Al Steels
p.57

Ultrasonic Investigation of the Ni₄₀Ti₅₀Cu₁₀ Alloy
p.63

The Snoek-Köster (SK) Relaxation and Dislocation-Enhanced Snoek Effect (DESE) in Deformed Iron
p.67

Atomic Structure of the Intercrystalline General Type Boundaries. Mechanisms of the Grain Boundary Peak of Internal Friction. Premelting
p.73

HomeSolid State PhenomenaSolid State Phenomena Vol. 115Diffusion of Hydrogen in the Ni30Ti50Cu20 Shape...

Diffusion of Hydrogen in the Ni₃₀Ti₅₀Cu₂₀ Shape Memory Alloy

Abstract:

The chemical diffusion coefficient (Dc) of hydrogen in the Ni30Ti50Cu20 shape memory alloy has been determined in the temperature range 700 - 1150 K by investigating the kinetics of H2 absorption. The mobility of H has also been deduced between 250 K and 280 K from a Snoek-type internal friction peak. The values of the Einstein diffusion coefficient (DE) derived from the relaxation time of this peak were in keeping with those of Dc obtained at low H contents (nH = H/Me < 0.01 ). The combined Arrhenius plot of DE and Dc gave the following values for the diffusion parameters: W = 0.52 ± 0.02 eV, D0 = (5±2)x10-4 cm2/s.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Solid State Phenomena (Volume 115)

Pages:

51-56

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.115.51

Citation:

Cite this paper

Online since:

August 2006

Authors:

Giovanni Mazzolai, A. Biscarini, B. Coluzzi, Fabio M. Mazzolai, U. Straube

Keywords:

Anelasticity, Hydrogen Absorption, Martensitic Transformation (MT), Shape Memory Alloy Actuator, Young's Modulus

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] T. Saburi, in Shape Memory Materials, K. Otsuka and M. Wayman (Eds), Cambridge University Press, p.49 (1998).

Google Scholar

[2] T. H. Nam, T. Saburi, K. Shimizu, Mater. Trans. JIM, 31, 950 (1990).

Google Scholar

[3] A. Biscarini, B. Coluzzi, G. Mazzolai, A. Tuissi, F. M. Mazzolai, J. Alloys and Compds. 355, 52 (2003).

DOI: 10.1016/s0925-8388(03)00267-6

Google Scholar

[4] I. Yoshida, D. Monma, K. Iino, K. Otsuka, M. Asai, H. Tsuzuki, J. Alloys and Compds., 356357, 79 (2003).

Google Scholar

[5] A. Biscarini, B. Coluzzi, R. Campanella, G. Mazzolai, L. Trotta, A. Tuissi, F. M. Mazzolai, Acta Mater., 47, 4525 (1999).

DOI: 10.1016/s1359-6454(99)00337-7

Google Scholar

[6] A. Rotini, A. Biscarini, R. Campanella, B. Coluzzi, G. Mazzolai, F. M. Mazzolai, Scripta Mater., 44, 719 (2001).

DOI: 10.1016/s1359-6462(00)00672-2

Google Scholar

[7] B. Coluzzi, A. Biscarini, R. Campanella, L. Trotta, G. Mazzolai, A. Tuissi, F. M. Mazzolai, Acta Mater., 47, 1965 (1999).

DOI: 10.1016/s1359-6454(99)00031-2

Google Scholar

[8] F. M. Mazzolai, A. Biscarini, R. Campanella, B. Coluzzi, G. Mazzolai, A. Rotini, A. Tuissi Acta Mater., 51, 573 (2003).

DOI: 10.1016/s1359-6454(02)00439-1

Google Scholar

[9] A. Biscarini, B. Coluzzi, G. Mazzolai, A. Tuissi, F. M. Mazzolai, J. Alloys and Compds., 356-357, 52 (2003).

DOI: 10.1016/s0925-8388(02)01289-6

Google Scholar

[10] B. Coluzzi, A. Biscarini, G. Mazzolai, F. M. Mazzolai, Scripta Mater., 51, 199 (2004).

Google Scholar

[11] F. M. Mazzolai, A. Biscarini, B. Coluzzi, G. Mazzolai, Appl. Phys. Lett., in press (2004).

Google Scholar

[12] A. Biscarini, B. Coluzzi, G. Mazzolai, F. M. Mazzolai, J. Alloys and Compds., submitted.

Google Scholar

[13] Elaborated from: P. G. Shewmon, Diffusion in Solids, Mc Graw Hill, N.Y., p.18, (1963).

Google Scholar

[14] J. Völkl, G. Alefeld, in Hydrogen in Metals 1, ed. by G. Alefeld and J. Völkl, vol. 28, Topics in Applied Physics, Springer, Berlin, p.321, (1978).

DOI: 10.1007/3540087052_51

Google Scholar