1. Composite materials based on a ceramic matrix of polycarbosilane and iron-containing nanoparticles.
- Author
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Yurkov, G. Yu, Pankratov, D.A., Koksharov, Yu.A., Ovtchenkov, Ye.A., Semenov, A.V., Korokhin, R.A., Shcherbakova, G.I., Gorobinskiy, L.V., Burakova, E.A., Korolkov, A.V., Ryzhenko, D.S., and Solodilov, V.I.
- Subjects
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CERAMIC materials , *METALLIC composites , *COMPOSITE materials , *MOSSBAUER spectroscopy , *NANOPARTICLES , *IRON oxides , *CERAMIC-matrix composites , *OXALATES - Abstract
Composite materials comprised of a ceramic matrix with metal-containing nanoparticles were prepared by sintering iron (II) oxalate and polycarbosilane. The chemical composition of the material can be controlled by a sintering process. Sintering in inert atmosphere leads to reduction of the sample and metal iron formation (a-Fe, carbide). Formation of iron oxides requires calcination procedure in series (argon and air) for removing by products. The air-sintering materials consist mainly of oxide phases, but also contain metal iron. The prepared samples were characterized by the: SEM, TEM, XRD and EMR techniques and the Mössbauer spectroscopy. It was shown unique behavior that iron containing particles after calcination in air decreased from 5-30 nm to 2–5 nm due to interaction with matrix under air atmosphere. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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