AlN matrix composites fabricated via an infiltration and reaction approach
Abstract
Novel AlN-based ceramic matrix composites were produced using a two-step infiltration and reaction process. Molten Al alloy was infiltrated without pressure into preforms containing Si[sub 3]N[sub 4] particles (mixed [alpha] and [beta] phases). The resultant composites were heat-treated, causing hard phases (AlN and Si) to form by reaction of the soft Al with Si[sub 3]N[sub 4]. The ceramic content of the final composites was higher than that of the original preform due to volume changes that occurred during the reaction heat treatment. Initial characterization of mechanical properties demonstrated that the composites had hardnesses, Young's moduli, and compressive strengths that compared favorably with traditionally processed AlN. Flexural strength measurements above the melting point of Si indicated that the composites possessed an interconnected skeleton of ceramic.
- Authors:
-
- Lanxide Corp., Newark, DE (United States)
- Publication Date:
- OSTI Identifier:
- 7166082
- Resource Type:
- Journal Article
- Journal Name:
- Journal of the American Ceramic Society; (United States)
- Additional Journal Information:
- Journal Volume: 77:7; Journal ID: ISSN 0002-7820
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; ALUMINIUM NITRIDES; FABRICATION; MECHANICAL PROPERTIES; COMPOSITE MATERIALS; SILICON NITRIDES; ALUMINIUM COMPOUNDS; MATERIALS; NITRIDES; NITROGEN COMPOUNDS; PNICTIDES; SILICON COMPOUNDS; 360601* - Other Materials- Preparation & Manufacture; 360603 - Materials- Properties
Citation Formats
Aghajanian, M K, Biel, J P, and Smith, R G. AlN matrix composites fabricated via an infiltration and reaction approach. United States: N. p., 1994.
Web. doi:10.1111/j.1151-2916.1994.tb07071.x.
Aghajanian, M K, Biel, J P, & Smith, R G. AlN matrix composites fabricated via an infiltration and reaction approach. United States. https://doi.org/10.1111/j.1151-2916.1994.tb07071.x
Aghajanian, M K, Biel, J P, and Smith, R G. 1994.
"AlN matrix composites fabricated via an infiltration and reaction approach". United States. https://doi.org/10.1111/j.1151-2916.1994.tb07071.x.
@article{osti_7166082,
title = {AlN matrix composites fabricated via an infiltration and reaction approach},
author = {Aghajanian, M K and Biel, J P and Smith, R G},
abstractNote = {Novel AlN-based ceramic matrix composites were produced using a two-step infiltration and reaction process. Molten Al alloy was infiltrated without pressure into preforms containing Si[sub 3]N[sub 4] particles (mixed [alpha] and [beta] phases). The resultant composites were heat-treated, causing hard phases (AlN and Si) to form by reaction of the soft Al with Si[sub 3]N[sub 4]. The ceramic content of the final composites was higher than that of the original preform due to volume changes that occurred during the reaction heat treatment. Initial characterization of mechanical properties demonstrated that the composites had hardnesses, Young's moduli, and compressive strengths that compared favorably with traditionally processed AlN. Flexural strength measurements above the melting point of Si indicated that the composites possessed an interconnected skeleton of ceramic.},
doi = {10.1111/j.1151-2916.1994.tb07071.x},
url = {https://www.osti.gov/biblio/7166082},
journal = {Journal of the American Ceramic Society; (United States)},
issn = {0002-7820},
number = ,
volume = 77:7,
place = {United States},
year = {Fri Jul 01 00:00:00 EDT 1994},
month = {Fri Jul 01 00:00:00 EDT 1994}
}