We study the corrosion resistance of sintered titanium specimens obtained by the methods of powder metallurgy in a 40% aqueous solution of sulfuric acid and in a 20% aqueous solution of hydrochloric acid at room temperature. It is shown that the modification of the surface layers of sintered titanium specimens by interstitial elements and, especially oxygen, increases their corrosion resistance. The maximum protection effect against aggressive media is provided by an oxide film obtained by thermodiffusion oxidation under the conditions of saturation in the oxygen-containing controlled atmosphere and by the oxidation in air: the corrosion resistance increases by three orders of magnitude as compared with the corrosion resistance of the unprotected surface.
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Translated from Fizyko-Khimichna Mekhanika Materialiv, Vol. 49, No. 3, pp. 63–69, May–June, 2013.
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Skrebtsov, A.A., Pohrelyuk, I.M., Luk’yanenko, O.H. et al. Influence of Oxidation on the Corrosion Resistance of Sintered Titanium. Mater Sci 49, 347–355 (2013). https://doi.org/10.1007/s11003-013-9621-3
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DOI: https://doi.org/10.1007/s11003-013-9621-3