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Analysis of Corrosion-Resistant Ruthenium-Doped Titanium Alloys by Inductively Coupled Plasma Atomic Emission Spectroscopy

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Abstract

A technique for analyzing new corrosion-resistant ruthenium-doped titanium alloys using inductively coupled plasma atomic emission spectrometry (ICP-AES) with microwave sample preparation is reported. The composition of a mixture of acids and the temperature and time parameters of sample preparation of titanium alloys under microwave heating in an autoclave ensuring quantitative conversion of the sample into a convenient analytical form without loss of volatile components for subsequent ICP-AES analysis are substantiated. Optimal conditions for the excitation of the analytical signal have been found, and analytical lines of elements without spectral noise have been selected. Samples of experimental melts of industrial titanium alloys of various classes, volumetrically doped with ruthenium, which are under development and are not yet commercially produced in the Russian Federation (alloy PT-7M + Ru, PT-3B + Ru, 5B + Ru, 37 + Ru, VT-22 + Ru) have been studied. The alloy samples contained the following alloying elements (wt %): Al (1.8–6.3); V (1.0–5.5); Mo (0.7–5.5); Zr (0.2–3.0); Cr (0.5–1.5); Fe (0.5–1.5); Ru (0.05–0.15). The correctness of the determination of alloying elements has been confirmed by analyzing standard samples by varying their mass and, in the case of ruthenium, by the “introduced–found” method. The developed method significantly reduces the time of analysis by combining the multielement ICP-AES method with microwave sample preparation, expands the list of detectable elements in titanium alloys, and improves the precision of the results of analysis.

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ACKNOWLDGMENTS

This study was performed using the equipment of the Center for Collective Use of Scientific Equipment Composition, Structure, and Properties of Structural and Functional Materials of the National Research Center Kurchatov Institute—Central Research Institute of Structural Materials Prometey.

Funding

This work was financially supported by the Ministry of Science and Higher Education of the Russian Federation, project no. 14.595.21.0004, identifier no. RFMEFI59517X0004.

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Authors and Affiliations

  1. National Research Center Kurchatov Institute—Central Research Institute of Structural Materials Prometey, St. Petersburg, Russia

    A. V. Vyacheslavov, Yu. Yu. Malinkina, V. B. Bichaev & A. D. Titova

  2. Lipetsk State Technical University, Lipetsk, Russia

    T. N. Ermolaeva

Authors
  1. A. V. Vyacheslavov
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  2. Yu. Yu. Malinkina
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  3. V. B. Bichaev
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  4. A. D. Titova
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  5. T. N. Ermolaeva
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Corresponding authors

Correspondence to A. V. Vyacheslavov or T. N. Ermolaeva.

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Translated by D. Kharitonov

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Vyacheslavov, A.V., Malinkina, Y.Y., Bichaev, V.B. et al. Analysis of Corrosion-Resistant Ruthenium-Doped Titanium Alloys by Inductively Coupled Plasma Atomic Emission Spectroscopy. Inorg Mater 55, 1365–1370 (2019). https://doi.org/10.1134/S0020168519140140

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  • DOI: https://doi.org/10.1134/S0020168519140140

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