Activated combustion features in the Mo-Si-C-promoter system and synthesis of MoSi{sub 2}-SiC composite powders

Journal Article · Tue Dec 04 00:00:00 EST 2007 · Materials Research Bulletin

DOI:https://doi.org/10.1016/j.materresbull.2007.01.019· OSTI ID:21062262

Hambartsumyan, A A ^[1]; Harutyunyan, A B ^[1]; Kharatyan, S L ^[1]

---

1. Laboratory of Kinetics of SHS Processes, A.B. Nalbandyan Institute of Chemical Physics, National Academy of Sciences, P. Sevak str. 5/2, Yerevan 0014 (Armenia)

Opportunities on combustion synthesizing the MoSi{sub 2}-SiC ceramic composites in a wide range of compositions under the chemical activated mode were studied. Molybdenum, silicon powders and carbon black were used as initial reagents, and Teflon was used as an activating additive. It was established that Teflon displays a dual (kinetic and thermal) impact on the interaction between reagents. The phasic character of the combustion process evolution, being characterized by low- and high-temperature regimes, was revealed. The end-products were subjected to SEM, XRD and chemical analyses.

• OSTI ID: 21062262
• Journal Information: Materials Research Bulletin, Vol. 42, Issue 12; Other Information: DOI: 10.1016/j.materresbull.2007.01.019; PII: S0025-5408(07)00029-3; Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CARBON BLACK
CERAMICS
CHEMICAL ANALYSIS
COMBUSTION
MICROSTRUCTURE
MOLYBDENUM
MOLYBDENUM SILICIDES
POWDERS
PROMOTERS
SCANNING ELECTRON MICROSCOPY
SILICON
SILICON CARBIDES
SYNTHESIS
TEFLON
X-RAY DIFFRACTION