Corrosion Properties of TiNi Medical Alloy with Bioinert Coatings

被引：0
|
作者：
Urban, V. I. [1 ]
Rubanik, V. V. [1 ]
Rubanik Jr, V. V. [1 ]
Bagrets, D. A. [1 ]
Dorodeiko, V. G. [2 ]
Vieira, D. E. L. [3 ]
Salak, A. N. [3 ]
机构：
[1] Belarus Natl Acad Sci, Inst Tech Acoust, Vitebsk 210009, BELARUS
[2] ZAO Simurg Med Enterprise, Vitebsk 210023, BELARUS
[3] Univ Aveiro, Aveiro Inst Mat, Dept Mat & Ceram Engn, CICECO, P-3810093 Aveiro, Portugal
来源：
PROTECTION OF METALS AND PHYSICAL CHEMISTRY OF SURFACES | 2023年 / 59卷 / 04期
关键词：
titanium nickelide; ZrN coating; Ta coating; diamond-like coating; galvanic pair; stationary potential; anode current;
D O I：
10.1134/S2070205123700818
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
A comparative analysis of the barrier properties and corrosion resistance of bioinert coatings of tantalum, zirconium nitride, stainless steel of the 12X18H10T grade, as well as diamond-like coating (DLC) deposited on the surface of the medical alloy Ti-50.8 at % Ni (TiNi) has been performed. All the coatings are characterized by high barrier properties with respect to the yield of nickel in the biological medium for a long time, whereas, in the case of uncoated TiNi, the concentration of nickel in the test solution increases rapidly and exceeds the permissible amount of migration after 60 days of exposure. Electroplating TiNi-bioinert-coating pairs demonstrate a corrosive behavior determined by the nature of the coating material. The most resistant to galvanic corrosion is the TiNi -Ta pair, for which no signs of corrosion processes were detected on any of the elements of the pair after exposure in a model solution for 24 h. The pairs TiNi-12X18H10T and TiNi-DLC have shown the worst corrosion resistance among the studied pairs: extensive corrosion areas were observed on one of the elements of the pairs.
引用
收藏
页码：717 / 723
页数：7
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