Abstract
Cobalt-containing ultramarine spinel-type pigments are fabricated in the ZnO–MgO–CoO–Al(OH)3–Al system by self-propagating high-temperature synthesis (SHS). the initial components are oxides of cobalt (Co3O4) and zinc (ZnO), aluminum hydroxide (Al(OH)3), and magnesium nitrate hexahydrate (Mg(NO3)2 · 6H2O). An aluminum powder of the ASD-4 brand is used as the reducer metal. The synthesis is performed using samples 40 mm in diameter. The combustion wave propagation velocity is 1–2 mm/s, and the maximal synthesis temperature is 1180°C. Parallel processes of oxidation of aluminum and aluminothermic reactions are leading reactions that provide the synthesis of spinel-based ceramic pigments in the layer-by-layer combustion. These processes result in charge self-heating to the synthesis temperature of spinels, which are also formed with heat liberation. The rapid destruction of Al(OH)3 upon heating leads to the formation of active submicron γ-Al2O3 participating in the subsequent synthesis of finely dispersed spinel structure. Endotherms associated with the decomposition of Al(OH)3 lead to cooling of combusting sample, which complicates the SHS implementation are requires an additional heat supply. Gases liberated during thermal decomposition loosen the charge in the heating zone and decrease the maximal combustion temperature, which makes it possible to perform the synthesis in the solid phase without product fusion and acquire it in the finely dispersed state. Microstructural investigations into the samples by means of scanning electron microscopy confirmed the finely dispersed structure of pigments. IR spectroscopic and X-ray phase analyses revealed a spinel structure. Particle-size-distribution histograms for the initial Al(OH)3 and after its heating, as well as for synthesized spinels, are presented in the work. It is shown that the content of particles 903 nm in diameter is maximal in pigment. Thus, the fabrication of spinel-type pigments in the finely dispersed state by solid-phase synthesis immediately in the combustion wave considerably simplifies the process flowsheet of their production due to the absence of a grinding state.
Similar content being viewed by others
REFERENCES
Merzhanov, A.G., Kontseptsiya razvitiya SVS kak oblasti nauchno-tekhnicheskogo progressa (The Concept of Development of SHS as a Field of Scientific and Technical Progress), Chernogolovka: Territoriya, 2003.
Radishevskaya, N.I., L’vov, O.V., Kasatskii, N.G., Chapskaya, A.Yu., Lepakova, O.K., Kitler, V.D., and Naiborodenko, Yu.S., Features of self-propagating high-temperature synthesis of spinel pigments, Combust., Explos., Shock Waves, 2012, vol. 48, no. 1, pp. 57–63.
Myasoedov, B.F. and Grigoryan, A.E., Self-Propagating high-temperature synthesis is conquering the world (The jubilee of a scientific discovery), Herald Russ. Acad. Sci., 2008, vol. 78, no. 3, pp. 320–324.
Merzhanov, A.G., SAF on the way to industrialization, Nauka–Proizvod., 2006, no. 2, pp. 19–24.
Kharashvili, E.Sh., Trends in developing ceramic pigments (review), Glass Ceram., 1985, vol. 42, no. 10, pp. 459–463.
Varma, A., Diakov, V., and Shafirovic, E., Heterogeneous combustion: Recent developments and new opportunities for chemical engineers, AIChE J., 2005, vol. 51, no. 11, pp. 2876–2884. https://doi.org/10.1002/aic.10697
Gorshkov, V.A., Miloserdov, P.A., Yukhvid, V.I., Sachkova, N.V., and Kovalev, I.D., Preparation of magnesium aluminate spinel by self-propagating high-temperature synthesis metallurgy methods, Inorg. Mater., 2017, vol. 53, no. 10, pp. 1046–1052.
Merzhanov, A.G., SHS on the pathway to industrialization, Int. J. Self-Propag. High-Temp. Synth., 2001, vol. 10, no. 2, pp. 237–248. https://doi.org/1:CAS:528:DC%2BD3MXpt1eis74%3D
Yukhvid, V.I., High-temperature liquid-phase SHS processes: new trends and task objectives, Izv. Vyssh. Uchebn. Zaved., Tsvetn. Metall., 2006, no. 5, pp. 62–78.
Aruna, S.T. and Mukasyan, A.S., Combustion synthesis and nanomaterials, Curr. Opin. Solid State Mater. Sci., 2008, vol. 12, no. 3, pp. 44–50. https://doi.org/10.1016/j.cossms.2008.12.002
aksimov, Yu.M., Self-propagating high-temperature synthesis in Tomsk scientific center, Sintez i konsolidatsiya poroshkovykh materialov. Sbornik tezisov Mezhdunarodnoi konferentsii (23–26 oktyabrya 2018 g.) (Proc. Int. Conference “Synthesis and Consolidation of Powder Materials”, October 23–26, 2018), Moscow: Torus Press, 2018, pp. 472–476
Patil, K.C., Hegde, M.S., Rattan, T., and Aruna, S.T., Chemistry of Nanocrystalline Oxide Materials: Combustion Synthesis, Properties and Applications, World Scientific, 2008, pp. 1–345. https://doi.org/10.1142/9789812793157_fmatter
Casado, P.G. and Rasines, I., The series of spinels Co3–sAlsO4 (0 < s <2): Study of Co2AlO4, J. Solid State Chem., 1984, vol. 52, no. 2, pp. 187–190. https://doi.org/10.1016/0022-4596(84)90190-7
Ali, A.A. and Ahmed, I.S., Sol-gel auto-combustion fabrication and optical properties of cobalt orthosilicate: Utilization as coloring agent in polymer and ceramic, Mater. Chem. Phys, 2019, vol. 238, article no. 121888.
Hwang, C.-C., Wu, T.-Y., Wan, J., and Tsa, J.-S., Development of a novel combustion synthesis method for synthesizing of ceramic oxide powders, Mater. Sci. Eng., B, 2004, vol. 111, no. 1, pp. 49–56. https://doi.org/10.1016/j.mseb.2004.03.023
Dimitrov, T.I., Ibreva, T.H., and Markovska, I.G., Synthesis and investigation of ceramic pigments in the system MnO–ZnO–SiO2, Glass Ceram., 2019, vol. 76, nos. 5–6, pp. 216–218.
Yang, G.-Q., Han, B., Sun, Z.-T., Yan, L.-M., and Wang, X.-Y., Preparation and characterization of brown nanometer pigment with spinel structure, Dyes Pigm., 2002, vol. 55, no. 1, pp. 9–16. https://doi.org/10.1016/S0143-7208(02)00056-6
Salem, S., Jazayeri, S.H., Bondioli, F., Allahverdi, A., Shirvani, M., and Ferrari, A.M., CoAl2O4 nano pigment obtained by combustion synthesis, Int. J. Appl. Ceram. Technol., 2012, vol. 9, no. 5, pp. 968–978. https://doi.org/10.1111/j.1744-7402.2011.02704.x
Maslennikova, G.N. and Pishch, I.V., Keramicheskie pigmenty (Ceramic Pigments), Moscow: Stroimaterialy, 2009.
Yoneda, M., Gotoh, K., Nakanishi, M., Fujii, T., and Nomura, T., Influence of aluminum source on the color tone of cobalt blue pigment, Powder Technol., 2018, vol. 323, pp. 574–580.
Noskov, A.S., Promyshlennyi kataliz v lektsiyakh (Industrial Catalysis in Lectures), Moscow: Kalvis, 2009, issue 8.
Boldyrev, A.I., Infrakrasnye spektry mineralov (Infrared Spectra of Minerals), Moscow: Nedra, 1976.
Štangar, U.L., Orel, B., and Krajnc, M., Preparation and spectroscopic characterization of blue CoAl2O4 coatings, J. Sol-Gel Sci. Technol., 2003, vol. 26, no. 1, pp. 771–775. https://doi.org/10.1023/A:1020770810027
Author information
Authors and Affiliations
Corresponding authors
Ethics declarations
The authors declare that they have no conflict of interest.
Additional information
Translated by N. Korovin
About this article
Cite this article
Radishevskaya, N.I., Nazarova, A.Y., Lvov, O.V. et al. Synthesis of Inorganic Cobalt-Containing Spinel-Type Pigments by Self-Propagating Synthesis. Russ. J. Non-ferrous Metals 61, 680–685 (2020). https://doi.org/10.3103/S1067821220060188
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.3103/S1067821220060188