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Metastable Phases Produced In Nickel By High Dose La And 0 Implantation, And Pulsed Laser Melt Quenching

Published online by Cambridge University Press:  26 February 2011

D.K. Sood ,
A.P. Pogany ,
G. Battaglin ,
A. Carnera ,
G. Della Mea ,
V.L. Kulkarni ,
P. Mazzoldi  and
J. Chaumont
D.K. Sood
Affiliation:
Microelectronics Technology Centre, Royal Melbourne Institute of Technology, Melbourne 3000, Australia.
A.P. Pogany
Affiliation:
Microelectronics Technology Centre, Royal Melbourne Institute of Technology, Melbourne 3000, Australia.
G. Battaglin
Affiliation:
Departimento di Fisica, Universita di Padova, Via Mazzolo n.8, 35131 Padova, Italy.
A. Carnera
Affiliation:
Departimento di Fisica, Universita di Padova, Via Mazzolo n.8, 35131 Padova, Italy.
G. Della Mea
Affiliation:
Departimento di Fisica, Universita di Padova, Via Mazzolo n.8, 35131 Padova, Italy.
V.L. Kulkarni
Affiliation:
Departimento di Fisica, Universita di Padova, Via Mazzolo n.8, 35131 Padova, Italy.
P. Mazzoldi
Affiliation:
Departimento di Fisica, Universita di Padova, Via Mazzolo n.8, 35131 Padova, Italy.
J. Chaumont
Affiliation:
Laboratoire Rene Bernas, Universite Paris XI, 91406 Orsay, France.
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Abstract

Nickel single crystals implanted with La, 0 and La + 0, up to about 9 a/o concentrations were irradiated with spatially homogenised ruby laser pulses (16 ns FWHM) up to 3.7 J/cm2 in vacuum (s~ 10−2 Torr). Phase changes, defect structure and solute migration were studied before and after laser melt quenching using RBS/channeling, TEM and SEM techniques.

Both La and La + 0 implants produced a buried amorphous layer on top of a polycrystalline layer above the single crystal matrix. 0 implants did not produce an amorphous phase, but a buried layer containing polycrystalline Ni, metastable hcp Ni particles and a dense dislocation network was formed. Pulsed laser melt quenching of these implanted metastable phases lead to a variety of new phases - all crystalline.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 51: Symposium A – Beam-Solid Interactions and Phase Transformations , 1985 , 455
Copyright
Copyright © Materials Research Society 1985

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References

REFERENCES

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