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. 2020 Feb 5;13(3):722. doi: 10.3390/ma13030722

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Glancing-angle XRD (GXRD) data of the scales formed on the alloy OHS1 at (a) 800 and (b) 1200 °C in air, in (a) γ = 2° and (b) γ = 10°. (a) TiO₂ (JCPDS 21-1276), TiNbO₄ (JCPDS 81-911), Nb₂O₅.GeO₂ (JCPDS 19-0908), SiO₂ (JCPDS 39-1425), CrNbO₄ (JCPDS 81-909), SnGeO₃ (32-0413), Ti₂Nb₁₀O₂₉ (JCPDS 73-0242), and TiNb₂O₇ (JCPDS 77-1374); (b) TiO₂ (JCPDS 21-1276), SiO₂ (JCPDS 39-1425),Ti₂Nb₁₀O₂₉ (JCPDS 73-0242), TiNb₂O₇ (JCPDS 77-1374), rutile type TiNbO₄ (JCPDS 81-911) and AlNbO₄ (JCPDS 41-0347), Nb₂O₅ (JCPDS 28-0317), and Al₂O₃ (JCPDS 70-3319).