Melis ÖZTÜRK, M.Sc. Student
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Metallurgical and Materials Engineering
Yıldız Technical University
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www.linkedin.com/in/melisbulut/
Effect of Low Calcination Temperature on Stability of Iron Manganese Oxide Pigments
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Supervisor: Assoc Prof. Dr. BuÄŸra Çiçek
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Black inorganic pigments are widely produced by using synthetic methods such as thermal decomposition of iron salts, precipitation, solid state reaction, and reduction of organic compounds [1,2]. In our study, a black pigment with the structure of MeFe2O4 (where Me is manganese) was obtained by calcining its raw materials, manganese dioxide (MnO2) and γ-Fe2O3. The temperature-resistant black pigment, which is a mixed oxide of manganese and iron with a spinel structure, has excellent color properties, tinting strength, and lightfastness [3]. The black pigment produced in this way is particularly advantageous in that it does not contain heavy metals or highly toxic materials [4]. These fine powdered black pigments are used to color many materials including glass, plastic, glazes and ceramic bodies. [2,4].
[1] Mariani, Filipe Quadros, et al. "Sustainable innovative method to synthesize different shades of iron oxide pigments." Dyes and Pigments 137 (2017): 403-409.
[2] Buxbaum, Gunter, ed. Industrial inorganic pigments. John Wiley & Sons, 2008.
[3] Kuske, Peter, and Gunter Buxbaum. "Black manganese/iron oxide pigment a process for its production and its use." U.S. Patent No. 5,164,005. 17 Nov. 1992.
[4] Tanisan, Belgin, and Servet Turan. "Synthesis of Fe-Mn black pigments by using hematite waste and manganese ore mixtures." Transactions of the Indian Ceramic Society 71.1 (2012): 17-20.
