Journal
JOURNAL OF MATERIALS RESEARCH
Volume 18, Issue 11, Pages 2549-2551Publisher
MATERIALS RESEARCH SOCIETY
DOI: 10.1557/JMR.2003.0356
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Composites consisting of particles of alpha-iron dispersed in silicon carbonitride (SiCN) were fabricated by a polymer route. The composites had iron inclusions with the same magnetization as bulk iron, but they resisted oxidation up to 500 degreesC and had a hardness of 5-7 GPa. The composites behaved as ferromagnets, albeit with a low susceptibility attributed to the pinning of the domains by imperfect interfaces and to the elastic resistance from the SiCN matrix. This low-cost, low-temperature processing method can be used to make different kinds of ceramic composites with multifunctional properties.
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