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Templated growth of a complex nitride island dispersion through an internal nitridation reaction

Published online by Cambridge University Press:  31 January 2011

M. P. Brady ,
D. T. Hoelzer ,
E. A. Payzant ,
P. F. Tortorelli ,
J. A. Horton ,
I. M. Anderson ,
L. R. Walker  and
S. K. Wrobel
M. P. Brady*
Affiliation:
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831–6115
D. T. Hoelzer
Affiliation:
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831–6115
E. A. Payzant
Affiliation:
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831–6115
P. F. Tortorelli
Affiliation:
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831–6115
J. A. Horton
Affiliation:
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831–6115
I. M. Anderson
Affiliation:
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831–6115
L. R. Walker
Affiliation:
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831–6115
S. K. Wrobel
Affiliation:
Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee
*
a)Address all correspondence to this author.bradymp@ornl.gov
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Abstract

A new synthesis route, based on internal oxidation reactions in multiphase alloys, is proposed for the controlled production of near-surface, complex ceramic-ceramic or ceramic-metallic composite structures. Using this approach, a microdispersion of a complex nitride perovskite, Cr3PtN, was formed in Cr2N or Cr(Pt) by internal nitridation of a two-phase Cr(Pt) + Cr3Pt precursor alloy. A framework for use of this phenomenon to synthesize island micro- (and potentially meso- or nano-) composite functional surface structures is presented.

Type
Rapid Communications
Information
Journal of Materials Research , Volume 16 , Issue 10 , October 2001 , pp. 2784 - 2787
Copyright
Copyright © Materials Research Society 2001

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