INFLUENCE OF COPPER IN SILVER COATING ON THE SURFACE OF NZ30K ALLOY + 0.1 WT.% AG ON ITS CORROSION BEHAVIOR IN RINGER-LOCKE SOLUTION
This study investigates the corrosion behavior of NZ30K + 0.1 wt.% Ag alloy coated with a silver layer containing copper impurities introduced unintentionally during plasma spraying. X-ray spectral analysis revealed the coating composition as 60.1 wt.% Ag and 39.9 wt.% Cu, which significantly influ...
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Al-Farabi Kazakh National University
2025-06-01
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| Series: | Physical Sciences and Technology |
| Online Access: | https://phst.kaznu.kz/index.php/journal/article/view/529 |
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| author | Viktor Greshta |
| author_facet | Viktor Greshta |
| author_sort | Viktor Greshta |
| collection | DOAJ |
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This study investigates the corrosion behavior of NZ30K + 0.1 wt.% Ag alloy coated with a silver layer
containing copper impurities introduced unintentionally during plasma spraying. X-ray spectral analysis
revealed the coating composition as 60.1 wt.% Ag and 39.9 wt.% Cu, which significantly influenced the
corrosion performance in Ringer–Locke solution. Intense contact corrosion occurred at coating defects,
initiating crevice corrosion and delamination at the transition between cylindrical and flat surfaces. A rapid
negative shift in corrosion potential (E<sub>cor</sub>) at 29.9 mV/s was observed–1.67 times faster than
in samples with a 1200 nm thick pure silver coating. Subsequently, the shift rate decreased to 0.008 mV/s
and stabilized at –1.356 V. Localized corrosion developed into pitting and deep ulcers due to selective
anodic dissolution, resembling damage typical of stainless steels in chloride environments. The results indicate that copper contamination in silver coatings on NZ30K-based biodegradable implants is detrimental,
as it accelerates local corrosion and hydrogen evolution, potentially contributing to muscle necrosis during
bone healing.
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| format | Article |
| id | doaj-art-c199e4e270d049b99e3bdd0b17d927ed |
| institution | DOAJ |
| issn | 2409-6121 2522-1361 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Al-Farabi Kazakh National University |
| record_format | Article |
| series | Physical Sciences and Technology |
| spelling | doaj-art-c199e4e270d049b99e3bdd0b17d927ed2025-08-20T03:23:37ZengAl-Farabi Kazakh National UniversityPhysical Sciences and Technology2409-61212522-13612025-06-01121-210.26577/phst20251219INFLUENCE OF COPPER IN SILVER COATING ON THE SURFACE OF NZ30K ALLOY + 0.1 WT.% AG ON ITS CORROSION BEHAVIOR IN RINGER-LOCKE SOLUTIONViktor Greshta0Zaporizhzhia Polytechnic National University, Zaporizhzhia, Ukraine This study investigates the corrosion behavior of NZ30K + 0.1 wt.% Ag alloy coated with a silver layer containing copper impurities introduced unintentionally during plasma spraying. X-ray spectral analysis revealed the coating composition as 60.1 wt.% Ag and 39.9 wt.% Cu, which significantly influenced the corrosion performance in Ringer–Locke solution. Intense contact corrosion occurred at coating defects, initiating crevice corrosion and delamination at the transition between cylindrical and flat surfaces. A rapid negative shift in corrosion potential (E<sub>cor</sub>) at 29.9 mV/s was observed–1.67 times faster than in samples with a 1200 nm thick pure silver coating. Subsequently, the shift rate decreased to 0.008 mV/s and stabilized at –1.356 V. Localized corrosion developed into pitting and deep ulcers due to selective anodic dissolution, resembling damage typical of stainless steels in chloride environments. The results indicate that copper contamination in silver coatings on NZ30K-based biodegradable implants is detrimental, as it accelerates local corrosion and hydrogen evolution, potentially contributing to muscle necrosis during bone healing. https://phst.kaznu.kz/index.php/journal/article/view/529 |
| spellingShingle | Viktor Greshta INFLUENCE OF COPPER IN SILVER COATING ON THE SURFACE OF NZ30K ALLOY + 0.1 WT.% AG ON ITS CORROSION BEHAVIOR IN RINGER-LOCKE SOLUTION Physical Sciences and Technology |
| title | INFLUENCE OF COPPER IN SILVER COATING ON THE SURFACE OF NZ30K ALLOY + 0.1 WT.% AG ON ITS CORROSION BEHAVIOR IN RINGER-LOCKE SOLUTION |
| title_full | INFLUENCE OF COPPER IN SILVER COATING ON THE SURFACE OF NZ30K ALLOY + 0.1 WT.% AG ON ITS CORROSION BEHAVIOR IN RINGER-LOCKE SOLUTION |
| title_fullStr | INFLUENCE OF COPPER IN SILVER COATING ON THE SURFACE OF NZ30K ALLOY + 0.1 WT.% AG ON ITS CORROSION BEHAVIOR IN RINGER-LOCKE SOLUTION |
| title_full_unstemmed | INFLUENCE OF COPPER IN SILVER COATING ON THE SURFACE OF NZ30K ALLOY + 0.1 WT.% AG ON ITS CORROSION BEHAVIOR IN RINGER-LOCKE SOLUTION |
| title_short | INFLUENCE OF COPPER IN SILVER COATING ON THE SURFACE OF NZ30K ALLOY + 0.1 WT.% AG ON ITS CORROSION BEHAVIOR IN RINGER-LOCKE SOLUTION |
| title_sort | influence of copper in silver coating on the surface of nz30k alloy 0 1 wt ag on its corrosion behavior in ringer locke solution |
| url | https://phst.kaznu.kz/index.php/journal/article/view/529 |
| work_keys_str_mv | AT viktorgreshta influenceofcopperinsilvercoatingonthesurfaceofnz30kalloy01wtagonitscorrosionbehaviorinringerlockesolution |