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A new surface pretreatment approach for enhancing diamond nucleation

Published online by Cambridge University Press:  31 January 2011

Qi Hua Fan ,
A. Fernandes ,
E. Pereira  and
J. Grácio
Qi Hua Fan*
Affiliation:
Department of Physics, University of Aveiro, 3810 Aveiro, Portugal
A. Fernandes
Affiliation:
Department of Physics, University of Aveiro, 3810 Aveiro, Portugal
E. Pereira
Affiliation:
Department of Physics, University of Aveiro, 3810 Aveiro, Portugal
J. Grácio
Affiliation:
Department of Mechanical Engineering, University of Aveiro, 3810 Aveiro, Portugal
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

In this paper we present a new approach of surface pretreatment for enhancing diamond nucleation. The copper substrates were fixed inside a plastic cylinder container with diamond powder diluted in water. This container was coupled to a vibration unit moving up and down at ˜300 cycles/min with a stroke of 15 mm. Finally, samples pretreated for 30 min were deposited with diamond. A high nucleation density comparable to that on substrate abraded with diamond powder was achieved. This method proved to be more effective than our ultrasonic treatment, keeping the advantages of surface preservation. Being simple and straightforward, this “shaking” pretreatment most fits the cases where a thin interlayer has to be used (like diamond coating on steel) and where the samples have a complex shape.

Type
Articles
Information
Journal of Materials Research , Volume 14 , Issue 12 , December 1999 , pp. 4478 - 4481
Copyright
Copyright © Materials Research Society 1999

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