We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Surface Modification of AM60 Mg-Al Alloy with Vanadium and V 2 O 5 Sputtered Deposits: Activity in Marine Ambience.
- Authors
Sánchez, Gerardo; Veleva, Lucien; Flores, Eduardo
- Abstract
Vanadium (~450 nm) and V2O5 (~350 nm) were deposited by DC magnetron sputtering on an AM60 substrate to improve its degradation resistance in marine ambience. According to Raman and XPS analysis, the vanadium nanofilm mainly consists of amorphous V 2 O 3 , while V 2 O 5 comprises two sheets of V O 5 and V O 4 units. After 30 days of immersion of the coated AM60 in a marine model solution (SME), the shift of the pH of the SME to more alkaline values was less pronounced for V 2 O 5 -AM60 because of the HCl acid formation during the partial dissolution of V 2 O 5 in the presence of NaCl, and thus, a higher concentration of Mg 2 + ions ~ 100 mg L - 1 was released from the Mg (AM60) matrix. The lower concentration of ~ 40 mg L - 1 from the V-AM60 surface was attributed to the possible intercalation of the released Mg ions (cations) into the conductive tunnels of V 2 O 3 as the main component of the vanadium sputtered deposit. This oxide has been reported as a material for high-capacitive energy storage. In this way, the V-deposit provided longer partial protection for the AM60 surface (Mg matrix) from localized pitting attacks.
- Subjects
DC sputtering; VANADIUM alloys; MAGNETRON sputtering; VANADIUM oxide; SUBSTRATES (Materials science)
- Publication
Coatings (2079-6412), 2024, Vol 14, Issue 8, p955
- ISSN
2079-6412
- Publication type
Article
- DOI
10.3390/coatings14080955