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Influence of concentration of sulfuric and hydrochloric acids on corrosion resistance of porous titanium.

Influence of concentration of sulfuric and hydrochloric acids on corrosion resistance of porous titanium.

Authors :
Shliakhetka, Khrystyna
Pohrelyuk, Iryna
Chumalo, Halyna
Proskurnyak, Roman
Lavrys, Serhii
Veselivska, Halyna
Source :
Journal of Materials Science. Oct2023, Vol. 58 Issue 38, p15047-15060. 14p. 1 Color Photograph, 1 Black and White Photograph, 4 Diagrams, 1 Chart, 3 Graphs.
Publication Year :
2023

Abstract

In this work, comparative studies of the corrosion behavior of titanium manufactured by powder metallurgy (porous) and traditional technology (wrought) in aqueous solutions of hydrochloric and sulfuric acids of various concentrations were performed. Electrochemical, static immersion tests, and microstructural characterization pursued an influence of acid concentration on corrosion resistance and corrosion behavior. As expected, porous titanium had worse electrochemical performance and corrosion rate than non-porous wrought titanium in the studied acids; the presence of pores in titanium accounts for this. According to SEM and EDX analysis of corroded titanium surfaces, the corrosion mechanisms and their main differences for porous and non-porous wrought titanium were established. The safe use of porous titanium in sulfuric acid in the concentration range above 40% and up to 60% was confirmed. It was determined that the use of porous titanium in hydrochloric acid be limited due to its tendency to pitting. To improve the anticorrosion properties of porous titanium in hydrochloric acid, it is recommended to reduce the negative effect of pores, for example, by surface modification. This work demonstrates the range of acid concentrations beneficial for the operation of porous titanium. It provides referenceable data for designing and manufacturing products in the chemical, metallurgical, and other branches of industry. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00222461
Volume :
58
Issue :
38
Database :
Academic Search Index
Journal :
Journal of Materials Science
Publication Type :
Academic Journal
Accession number :
172892575
Full Text :
https://doi.org/10.1007/s10853-023-08964-9