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Synthesis and microstructure of conformal coatings on particulates

Published online by Cambridge University Press:  10 February 2011

K. Rajan ,
P. Sajgalik ,
R. K. Singh ,
D. Kumar  and
J. Fitz-Gerald
K. Rajan
Affiliation:
Department of Materials Science and Engineering, Rensselaer Polytechnic Institute, Troy, NY, 12180-3590
P. Sajgalik
Affiliation:
Institute of Inorganic Chemistry, Slovak Academy of Sciences, Bratislava, Slovak Republic
R. K. Singh
Affiliation:
NSF Engineering Research Center on Particle Science and Technology, University of Florida, Gainsville FL
D. Kumar
Affiliation:
NSF Engineering Research Center on Particle Science and Technology, University of Florida, Gainsville FL
J. Fitz-Gerald
Affiliation:
NSF Engineering Research Center on Particle Science and Technology, University of Florida, Gainsville FL
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Abstract

In this paper we present an overview of two very different approaches to the synthesis of composite particulates which result in a “core-shell” type structure. It is shown that both these synthesis approaches result in very characteristic interface structures between the outer coating and the host particles. One synthesis strategy is to use laser ablation deposition on individual particles and the other is to “coat” particles ‘in-situ’ by taking advantage of solid state diffusional transformations. Examination of the interface between the outer shell and the core of the particle shows that textured or toptactical growth occurs and it is suggested that this unique crystallographic characteristic may be responsible for the properties offered by these engineered particulates. The applications of such engineered particulates is also discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 501: Symposium FF – Surface Controlled Nanoscale Materials for High-Added… , 1997 , 313
Copyright
Copyright © Materials Research Society 1998

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References

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