The optimal compositions of chemically stable silicate composite materials (SCM) based on electrocorundum, which is by-product from the electrometallurgical production of niobium, are proposed. The chemical composition of electrocorundum is determined, x-ray phase and differential-thermal analyses are performed, the results of infrared spectroscopy are presented, a novel composition of electrocorundum-based ceramic paste is proposed, and the physical–chemical properties of the SCM obtained are studied. The basic characteristics of the material are: chemical stability to 99.9%, corrosion rate 0.5 – 1 mm/yr (stable), water absorption 4.4 – 5.4%, thermal stability 15 – 19, compression strength 8 – 16 MPa, shrinkage 0.1 – 0.6%, abradability 0.01 g/cm2, and bonding strength 0.5 – 0.6 MPa.
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Translated from Steklo i Keramika, No. 8, pp. 6 – 10, August, 2011.
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Zharmenov, A.A., Myrzalieva, S.K. & Aimbetova, É.O. Use of by-products from the metallurgical industry in the manufacture of protective composite materials. Glass Ceram 68, 242–246 (2011). https://doi.org/10.1007/s10717-011-9363-3
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DOI: https://doi.org/10.1007/s10717-011-9363-3