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Title: Amorphous precipitates in a crystalline matrix; Precipitation of amorphous Si{sub 3}N{sub 4} in {alpha}-Fe

Abstract

Microstructural changes in solids due to phase transformations are induced in practice to bring about specific, desired properties. The present research project focused on the development of a kinetic model for the precipitation of silicon nitride in silicon containing {alpha}-Fe, more or less as performed earlier by the authors for the precipitation of CrN and AlN. In contrast with their earlier preliminary work from the past, a determined effort to reveal the structure of the nitrides was undertaken. It was found that the precipitates were amorphous, stoichiometric Si{sub 3}N{sub 4}. The evidence for this finding is presented here. Further, on the basis of recent work on the modeling of interface energies, it will be suggested here that the occurrence of initially amorphous precipitate particles may have a thermodynamic basis. The kinetic analysis will be presented elsewhere.

Authors:
 [1];  [2]; ; ; ;  [3]
  1. Delft Univ. of Technology (Netherlands). Lab. of Materials Science|[Max Planck Inst. for Metals Research, Stuttgart (Germany)
  2. Witmetaal BV, Naarden (Netherlands). Research and Development Dept.
  3. Delft Univ. of Technology (Netherlands). Lab. of Materials Science
Publication Date:
OSTI Identifier:
691319
Resource Type:
Journal Article
Journal Name:
Scripta Materialia
Additional Journal Information:
Journal Volume: 41; Journal Issue: 6; Other Information: PBD: 20 Aug 1999
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; MICROSTRUCTURE; IRON ALLOYS; SILICON ALLOYS; PRECIPITATION; SILICON NITRIDES; AMORPHOUS STATE; KINETICS; X-RAY DIFFRACTION; ELECTRON MICROPROBE ANALYSIS

Citation Formats

Mittemeijer, E.J., Biglari, M.H., Boettger, A.J., Pers, N.M. van der, Sloof, W.G., and Tichelaar, F.D. Amorphous precipitates in a crystalline matrix; Precipitation of amorphous Si{sub 3}N{sub 4} in {alpha}-Fe. United States: N. p., 1999. Web. doi:10.1016/S1359-6462(99)00143-8.
Mittemeijer, E.J., Biglari, M.H., Boettger, A.J., Pers, N.M. van der, Sloof, W.G., & Tichelaar, F.D. Amorphous precipitates in a crystalline matrix; Precipitation of amorphous Si{sub 3}N{sub 4} in {alpha}-Fe. United States. doi:10.1016/S1359-6462(99)00143-8.
Mittemeijer, E.J., Biglari, M.H., Boettger, A.J., Pers, N.M. van der, Sloof, W.G., and Tichelaar, F.D. Fri . "Amorphous precipitates in a crystalline matrix; Precipitation of amorphous Si{sub 3}N{sub 4} in {alpha}-Fe". United States. doi:10.1016/S1359-6462(99)00143-8.
@article{osti_691319,
title = {Amorphous precipitates in a crystalline matrix; Precipitation of amorphous Si{sub 3}N{sub 4} in {alpha}-Fe},
author = {Mittemeijer, E.J. and Biglari, M.H. and Boettger, A.J. and Pers, N.M. van der and Sloof, W.G. and Tichelaar, F.D.},
abstractNote = {Microstructural changes in solids due to phase transformations are induced in practice to bring about specific, desired properties. The present research project focused on the development of a kinetic model for the precipitation of silicon nitride in silicon containing {alpha}-Fe, more or less as performed earlier by the authors for the precipitation of CrN and AlN. In contrast with their earlier preliminary work from the past, a determined effort to reveal the structure of the nitrides was undertaken. It was found that the precipitates were amorphous, stoichiometric Si{sub 3}N{sub 4}. The evidence for this finding is presented here. Further, on the basis of recent work on the modeling of interface energies, it will be suggested here that the occurrence of initially amorphous precipitate particles may have a thermodynamic basis. The kinetic analysis will be presented elsewhere.},
doi = {10.1016/S1359-6462(99)00143-8},
journal = {Scripta Materialia},
number = 6,
volume = 41,
place = {United States},
year = {1999},
month = {8}
}