Corrosion resistance of Ti–6Al–4V alloy with nitride coatings in Ringer’s solution

• Published in: Corrosion science Vol. 66; pp. 392 - 398
• Main Authors: Pohrelyuk, I.M., Fedirko, V.M., Tkachuk, O.V., Proskurnyak, R.V.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.01.2013; Elsevier
• Subjects: A. Alloy; A. Ringer’s solution; Applied sciences; B. Thermodiffusion saturation; C. Corrosion; C. Nitride coatings; Coatings; Corrosion; Corrosion environments; Corrosion prevention; Corrosion resistance; Exact sciences and technology; Metals. Metallurgy; Nitrides; Partial pressure; Production techniques; Protective coatings; Surface treatment; Titanium base alloys; A. Ringer’s solution; C. Nitride coatings; C. Corrosion; A. Alloy; B. Thermodiffusion saturation; Corrosion resistance; Nitrides; A. Ringer's solution; Corrosion; Aluminium alloy; Coatings; Vanadium alloy; Titanium base alloys
• ISSN: 0010-938X; 1879-0496
• DOI: 10.1016/j.corsci.2012.10.005

► Nitride coatings were formed on Ti–6Al–4V alloy by thermodiffusion saturation. ► Nitrides improve corrosion resistance of alloy in Ringer’s solution at 36 and 40°С. ► Corrosion resistance increases with increase of TiN phase in nitride coating. ► Corrosion resistance is determined significantly by quality of nitride coating. The corrosion behaviour of Ti–6Al–4V alloy with nitride coatings was investigated in Ringer’s solution at 36 and 40°С. Nitride coatings of different composition, thickness and surface quality were formed because of changing nitrogen partial pressure from 1 to 105Ра and nitriding temperature from 850 to 900°С. Results shown that nitride coatings improve anticorrosion properties of alloy at both solution temperatures. Corrosion resistance of alloy increases with the content increase of TiN phase in nitride coating. With increase of temperature from 36 to 40°С the corrosion resistance of alloy is determined significantly by quality of nitride coating.