scholarly journals Corrosion Behaviour of Ti-6Al-4V Alloy with Nitride Coatings in Simulated Body Fluids at 36∘C and 40∘C

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
I. M. Pohrelyuk ◽  
O. V. Tkachuk ◽  
R. V. Proskurnyak
Keyword(s):  
Corrosion Resistance ◽  
Corrosion Behaviour ◽  
Electrochemical Behaviour ◽  
Body Fluids ◽  
Nitride Coating ◽  
Nitride Coatings ◽  
Simulated Body Fluids

Nitride coatings were formed on Ti-6Al-4V alloy by thermodiffusion treatment. The corrosion-electrochemical behaviour of Ti-6Al-4V alloy with nitride coatings I and II was investigated in physiological solutions (0.9% NaCl and Tyrode's) at temperatures of 36∘C and 40∘C. It is determined that nitride coating I provides Ti-6Al-4V alloy the higher corrosion resistance in Tyrode's solution at both temperatures of solution while nitride coating II in isotonic 0.9% NaCl.

Corrosion Behaviour of Thermodiffusion Coatings on Titanium Implants in Simulated Body Fluids

2015 ◽  
Vol 227 ◽  
pp. 503-506 ◽  
Author(s):  
Oleh Tkachuk ◽  
Roman Proskurnyak ◽  
Iryna Pohrelyuk ◽  
Viktor Fedirko
Keyword(s):  
Corrosion Resistance ◽  
Corrosion Behaviour ◽  
Titanium Implants ◽  
Nitride Coating ◽  
Nacl Solution ◽  
Protective Function ◽  
Influence Of Temperature ◽  
Ringer’S Solution ◽  
Simulated Body Fluids ◽  
Oxynitride Coatings

The influence of temperature change of isotonic 0.9 % NaCl solution and Ringer's solution from 36 оС to 40 оС on the corrosion resistance of Ti-6Al-4V alloy with nitride and oxynitride coatings was studied. It was shown that increase of the temperature of 0.9 % NaCl and Ringer's solutions doesn′t deteriorate the protective function of oxynitride coating on Ti-6Al-4V alloy. It was determined that by increasing the temperature of Ringer's solution the corrosion processes on nitride coating are accelerated, while in 0.9 % NaCl the nitride coating provides the stable characteristics.

Electrochemical Behaviour of Titanium Based Biomaterials in Artificial Saliva

2017 ◽  
Vol 68 (2) ◽  
pp. 396-400
Author(s):  
Kamel Earar ◽  
Camelia Ana Grigore ◽  
Cristian Budacu ◽  
Lucia Carmen Trinca ◽  
Daniel Mareci ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Corrosion Behaviour ◽  
Layer Structure ◽  
Artificial Saliva ◽  
Electrochemical Behaviour ◽  
Grain Structure ◽  
Electrochemical Degradation ◽  
Nitrogen Diffusion ◽  
Implant Alloys ◽  
Modular Component

In the last decade, new titanium alloys such as Ti6Al7Nb and Ti6Al7NbN have been developed in different areas of dentistry. It is known that mechanical/electrochemical interactions accelerate corrosion in implant alloys, and these interactions can be reduced by improving the modular component machining tolerances or by improving the corrosion resistance. The aim of this study was to compare the Ti6Al7Nb and Ti6Al7NbN alloys corrosion resistance in AFNOR artificial saliva. Due to the nitrogen diffusion, the Ti6Al7NbN alloy presents more pronounced grain structure than Ti6Al7Nb. In the electrochemical estimations the polarisation data were converted into instantaneous corrosion rate values (jcorr). The obtained passivation properties were comparable for both alloys. The EIS spectra were best fitted using an equivalent circuit (EC) which was consistent with the model of a two-layer structure for the passive film. The electrochemical and corrosion behaviour of Ti6Al7NbN increased the occurrence of the implant alloy�s electrochemical degradation.

scholarly journals Enhancing Electrical Conductivity and Corrosion Resistance of CrN Coating by Pt Addition

Coatings ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1479
Author(s):  
Hulin Wu ◽  
Yihe Wang ◽  
Lin Xiang ◽  
Guanlin Song ◽  
Zhiwen Xie
Keyword(s):  
Electrical Conductivity ◽  
Corrosion Resistance ◽  
Marine Environment ◽  
Corrosion Current ◽  
Nitride Coating ◽  
Pronounced Increase ◽  
Crn Coating ◽  
Transition Metal Nitride ◽  
Nitride Coatings ◽  
Potential Applications

Transition-metal nitride coating used to protect the electronic connector devices in marine environment is required to have high electrical conductivity and good corrosion resistance. This study synthesized a novel CrN–Pt coating with a dense growth texture. Pt addition induced a pronounced increase in electrical conductivity and corrosion resistance. The resistivity decreased from 0.0149 Ohm·cm in the CrN coating to 0.000472 Ohm·cm in the CrN–Pt coating, while the corrosion current density decreased from 24 nA/cm2 in the CrN coating to 6.3 nA/cm2 in the CrN–Pt coating. The results of the above studies confirm that Pt doping has significant advantages in improving the electrical conductivity and corrosion resistance of nitride coatings for potential applications in the marine environment.

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