Synthesis and Formation Mechanism of Metal Oxide Compounds
Kengesbekov A. Sagdoldina Z. Torebek K. Baizhan D. Kambarov Y. Yermolenko M. Abdulina S. Maulet M.
October 2022MDPI
Coatings
2022#12Issue 10
In this work, the influence of the technological parameters of the detonation method on the formation of metal oxide compounds on the basis of titanium was investigated. The aim of the work was to investigate the method of the effective control of the phase composition and microstructure of titanium-based coatings during detonation spraying. The main parameters that varied in detonation spraying were the volume of filling the detonation barrel with explosive mixture and the oxygen/fuel ratio. The mechanism of formation of the gradient structure of coatings based on metal oxide compounds depending on the technological parameters of detonation spraying was considered. The structural-phase states and tribological properties of detonation coatings were investigated by the following methods: X-ray phase analysis (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDX-mapping), profilometry, and the test for wear-resistance according to the “ball-disk” scheme. It is shown that the phase composition of coatings may significantly change relative to the initial titanium powder during the detonation spraying due to the interaction of particles of powders with components of the gas atmosphere. Varying the spraying parameters may control the chemical reaction and provide conditions for the synthesis of the desired phases in the coatings (titanium oxide TiO2 and Ti2O3).
coating , detonation spraying , gradient structure , hardness , titanium oxide , wear resistance
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Research Center «Surface Engineering and Tribology», Sarsen Amanzholov East Kazakhstan University, Ust-Kamenogorsk, 070000, Kazakhstan
Institute for Composite Materials, Ust-Kamenogorsk, 070010, Kazakhstan
PlasmaScience LLP, Ust-Kamenogorsk, 070010, Kazakhstan
Shakarim University, Semey, 071412, Kazakhstan
The Faculty of Earth and Environmental Sciences, Daulet Serikbaev East Kazakhstan Technical University, Ust-Kamenogorsk, 070002, Kazakhstan
Research Center «Surface Engineering and Tribology»
Institute for Composite Materials
PlasmaScience LLP
Shakarim University
The Faculty of Earth and Environmental Sciences
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