Cohesive energy effects on anisotropic transport in ion mixing

G. W. Auner; Y. T. Cheng; M. H. Alkaisi; M. M. Karmarkar; K. R. Padmanabhan

doi:10.1016/0168-583X(91)95268-I

Cohesive energy effects on anisotropic transport in ion mixing

G. W. Auner, Y. T. Cheng, M. H. Alkaisi, M. M. Karmarkar, K. R. Padmanabhan

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

15 Scopus citations

Abstract

Experimental investigations of the effect of target species cohesive energy on anisotropic transport in ion mixing of metallic systems are reported. Bilayer samples with nearly zero heats of mixing, but different cohesive energy and geometry, such as W on top of Pd (W/Pd), Pd on top of W (Pd/W), Nb/Cu, Cu/Nb, Ag/V, and V/Ag, were irradiated with 300 keV Kr²⁺ at doses of 1 × 10¹⁶ Kr²⁺/cm² and 2 × 10¹⁶ Kr²⁺/cm² at 77 K. The samples were investigated using embedded markers and Rutherford backscattering spectrometry. The experimental results indicate a preferential transport of higher cohesive energy material into lower cohesive energy material - in some cases contrary to ballistic arguments. This phenomenon is explained in terms of thermally activated diffusion within thermal spikes.

Original language	English
Pages (from-to)	504-508
Number of pages	5
Journal	Nuclear Inst. and Methods in Physics Research, B
Volume	59-60
Issue number	PART 1
DOIs	https://doi.org/10.1016/0168-583X(91)95268-I
State	Published - Jul 1 1991

Bibliographical note

Funding Information:
The authors are grateful to General Motors Corporation and the Institute of Manufacturing Research for support of this project.

Funding

The authors are grateful to General Motors Corporation and the Institute of Manufacturing Research for support of this project.

Funders	Funder number
Beijing Aeronautical Manufacturing Technology Research Institute
General Motors Corporation

ASJC Scopus subject areas

Nuclear and High Energy Physics
Instrumentation

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Cite this

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title = "Cohesive energy effects on anisotropic transport in ion mixing",

abstract = "Experimental investigations of the effect of target species cohesive energy on anisotropic transport in ion mixing of metallic systems are reported. Bilayer samples with nearly zero heats of mixing, but different cohesive energy and geometry, such as W on top of Pd (W/Pd), Pd on top of W (Pd/W), Nb/Cu, Cu/Nb, Ag/V, and V/Ag, were irradiated with 300 keV Kr2+ at doses of 1 × 1016 Kr2+/cm2 and 2 × 1016 Kr2+/cm2 at 77 K. The samples were investigated using embedded markers and Rutherford backscattering spectrometry. The experimental results indicate a preferential transport of higher cohesive energy material into lower cohesive energy material - in some cases contrary to ballistic arguments. This phenomenon is explained in terms of thermally activated diffusion within thermal spikes.",

author = "Auner, {G. W.} and Cheng, {Y. T.} and Alkaisi, {M. H.} and Karmarkar, {M. M.} and Padmanabhan, {K. R.}",

note = "Funding Information: The authors are grateful to General Motors Corporation and the Institute of Manufacturing Research for support of this project.",

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T1 - Cohesive energy effects on anisotropic transport in ion mixing

AU - Auner, G. W.

AU - Cheng, Y. T.

AU - Alkaisi, M. H.

AU - Karmarkar, M. M.

AU - Padmanabhan, K. R.

N1 - Funding Information: The authors are grateful to General Motors Corporation and the Institute of Manufacturing Research for support of this project.

PY - 1991/7/1

Y1 - 1991/7/1

N2 - Experimental investigations of the effect of target species cohesive energy on anisotropic transport in ion mixing of metallic systems are reported. Bilayer samples with nearly zero heats of mixing, but different cohesive energy and geometry, such as W on top of Pd (W/Pd), Pd on top of W (Pd/W), Nb/Cu, Cu/Nb, Ag/V, and V/Ag, were irradiated with 300 keV Kr2+ at doses of 1 × 1016 Kr2+/cm2 and 2 × 1016 Kr2+/cm2 at 77 K. The samples were investigated using embedded markers and Rutherford backscattering spectrometry. The experimental results indicate a preferential transport of higher cohesive energy material into lower cohesive energy material - in some cases contrary to ballistic arguments. This phenomenon is explained in terms of thermally activated diffusion within thermal spikes.

AB - Experimental investigations of the effect of target species cohesive energy on anisotropic transport in ion mixing of metallic systems are reported. Bilayer samples with nearly zero heats of mixing, but different cohesive energy and geometry, such as W on top of Pd (W/Pd), Pd on top of W (Pd/W), Nb/Cu, Cu/Nb, Ag/V, and V/Ag, were irradiated with 300 keV Kr2+ at doses of 1 × 1016 Kr2+/cm2 and 2 × 1016 Kr2+/cm2 at 77 K. The samples were investigated using embedded markers and Rutherford backscattering spectrometry. The experimental results indicate a preferential transport of higher cohesive energy material into lower cohesive energy material - in some cases contrary to ballistic arguments. This phenomenon is explained in terms of thermally activated diffusion within thermal spikes.

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IS - PART 1

ER -

Cohesive energy effects on anisotropic transport in ion mixing

Abstract

Bibliographical note

Funding

ASJC Scopus subject areas

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