Version 1
: Received: 18 June 2023 / Approved: 19 June 2023 / Online: 19 June 2023 (07:17:13 CEST)
How to cite:
Wang, J.; Li, F. A Study on the High-Temperature Molten Salt Corrosion Resistance of Hot-Dip Aluminum/Carburizing Composite Coating on Ti65 Titanium Alloy. Preprints2023, 2023061311. https://doi.org/10.20944/preprints202306.1311.v1
Wang, J.; Li, F. A Study on the High-Temperature Molten Salt Corrosion Resistance of Hot-Dip Aluminum/Carburizing Composite Coating on Ti65 Titanium Alloy. Preprints 2023, 2023061311. https://doi.org/10.20944/preprints202306.1311.v1
Wang, J.; Li, F. A Study on the High-Temperature Molten Salt Corrosion Resistance of Hot-Dip Aluminum/Carburizing Composite Coating on Ti65 Titanium Alloy. Preprints2023, 2023061311. https://doi.org/10.20944/preprints202306.1311.v1
APA Style
Wang, J., & Li, F. (2023). A Study on the High-Temperature Molten Salt Corrosion Resistance of Hot-Dip Aluminum/Carburizing Composite Coating on Ti65 Titanium Alloy. Preprints. https://doi.org/10.20944/preprints202306.1311.v1
Chicago/Turabian Style
Wang, J. and Faguo Li. 2023 "A Study on the High-Temperature Molten Salt Corrosion Resistance of Hot-Dip Aluminum/Carburizing Composite Coating on Ti65 Titanium Alloy" Preprints. https://doi.org/10.20944/preprints202306.1311.v1
Abstract
This paper presents a new method of preparing a coating on the Ti65 titanium alloy by a two-step procedure comprising hot-dipped aluminum and solid carburization. The effects of the carburization in the presence of NaCl deposit at 810oC have been systematically studied. In this article, the microstructure, morphology, phase composition of the coating, and the corrosion products were investigated by SEM, EDS, and X-ray diffraction. Results indicated that the corrosion resistance of hot dip aluminum/carburizing composite coating was not significantly enhanced by hot dip aluminum coating. This can be attributed to the formation of TiC and Ti3AlC after carburization, which promoted the formation of loose and unprotected TiO2 in the coating during molten salt corrosion. In addition, the oxidation of the carbon atom into CO2 /CO leaded to a high concentration of vacancy in the coating, creating channels for NaCl to penetrate the coating and accelerated the corrosion rate.
Keywords
titanium alloy; hot-dip aluminum/carburizing composite coating; hot dip aluminum coating; molten salt corrosion
Subject
Chemistry and Materials Science, Materials Science and Technology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
