NDLI: Effect of and the ratio on high-temperature stability of materials

Content Provider	EDP Sciences
Author	J. Houška J. Vlček S. Hřeben M. M. M. Bilek D. R. McKenzie
Abstract	Amorphous Si-B-C-N alloys were deposited by reactive magnetron sputtering, and their high-temperature stability was investigated using a combined approach of experiment and molecular-dynamics simulations. We show that both a higher Si/C ratio and the addition of boron improve the thermal stability of the materials. We find that lifetimes of bonds of the same type are significantly longer at the higher Si/C ratio. The addition of boron results in a conversion of some of the electrons in lone pairs associated with nitrogen to bonding electrons. This increases the network's average coordination number. In both cases, the higher network coordination number and resulting lower diffusion, expressed in terms of longer bond lifetimes, shift decomposition reactions in materials to higher temperatures.
Ending Page	518
Starting Page	512
Page Count	7
File Format	HTM / HTML PDF
ISSN	02955075
Alternate Webpage(s)	https://epljournal.edpsciences.org/articles/epl/abs/2006/21/epl9614/epl9614.html
e-ISSN	12864854
Issue Number	3
Journal	Europhysics Letters
Volume Number	76
DOI	10.1209/epl/i2006-10283-5
Language	English
Publisher	EDP Sciences
Publisher Date	2006-11-01
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	© EDP Sciences, 2006
Subject Keyword	New materials theory, design, and fabrication Thermal stability; thermal effects Ceramics and refractories (including borides, carbides, hydrides, nitrides, oxides, and silicides)
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy

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