Electrochemical Properties of Ni 47 Ti 49 Co 4 Shape Memory Alloy in Artificial Urine for Urological Implant

Handle URI:
http://hdl.handle.net/10754/598138
Title:
Electrochemical Properties of Ni 47 Ti 49 Co 4 Shape Memory Alloy in Artificial Urine for Urological Implant
Authors:
Ahmed, Rasha A.
Abstract:
© 2015 American Chemical Society. The corrosion performance of Ni47Ti49Co4 shape memory alloys (SMA) in artificial urine solution was evaluated in comparison with Ni51Ti49 alloy as reference, at 37°C and pH 5.6-6.4. SEM results revealed less pitting attack for Ni47Ti49Co4 SMA surface after immersion in artificial urine solution. The XRD analysis demonstrated the formation of passive film on Ni47Ti49Co4 SMA. The XPS analysis indicated that the film mainly consisted of O, Ti, Co, P, and a small amount of Ni, and the concentration of Ni ions release was greatly reduced compared to that of the Ni51Ti49 SMA. Linear polarization results illustrated that corrosion potential (Ecorr), corrosion current density (icorr), and ac polarization resistance (Rp) were affected greatly by alloying Co to Nitinol alloy. Our observations indicated that the corrosion resistance of the ternary alloy, Ni47Ti49Co4 SMA, offers superior corrosion resistance in artificial urine when compared to Ni51Ti49 SMA, which was suitable for medical applications.
Citation:
Ahmed RA (2015) Electrochemical Properties of Ni 47 Ti 49 Co 4 Shape Memory Alloy in Artificial Urine for Urological Implant . Ind Eng Chem Res 54: 8397–8404. Available: http://dx.doi.org/10.1021/acs.iecr.5b00838.
Publisher:
American Chemical Society (ACS)
Journal:
Industrial & Engineering Chemistry Research
Issue Date:
2-Sep-2015
DOI:
10.1021/acs.iecr.5b00838
Type:
Article
ISSN:
0888-5885; 1520-5045
Sponsors:
I am grateful for the financial support of the Chemistry Department, University of Taif, Kingdom of Saudi Arabia. I also thank Core laboratories in King Abdullah University of Science and Technology (KAUST) for performing XRD and XPS analysis.
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Full metadata record

DC FieldValue Language
dc.contributor.authorAhmed, Rasha A.en
dc.date.accessioned2016-02-25T13:13:23Zen
dc.date.available2016-02-25T13:13:23Zen
dc.date.issued2015-09-02en
dc.identifier.citationAhmed RA (2015) Electrochemical Properties of Ni 47 Ti 49 Co 4 Shape Memory Alloy in Artificial Urine for Urological Implant . Ind Eng Chem Res 54: 8397–8404. Available: http://dx.doi.org/10.1021/acs.iecr.5b00838.en
dc.identifier.issn0888-5885en
dc.identifier.issn1520-5045en
dc.identifier.doi10.1021/acs.iecr.5b00838en
dc.identifier.urihttp://hdl.handle.net/10754/598138en
dc.description.abstract© 2015 American Chemical Society. The corrosion performance of Ni47Ti49Co4 shape memory alloys (SMA) in artificial urine solution was evaluated in comparison with Ni51Ti49 alloy as reference, at 37°C and pH 5.6-6.4. SEM results revealed less pitting attack for Ni47Ti49Co4 SMA surface after immersion in artificial urine solution. The XRD analysis demonstrated the formation of passive film on Ni47Ti49Co4 SMA. The XPS analysis indicated that the film mainly consisted of O, Ti, Co, P, and a small amount of Ni, and the concentration of Ni ions release was greatly reduced compared to that of the Ni51Ti49 SMA. Linear polarization results illustrated that corrosion potential (Ecorr), corrosion current density (icorr), and ac polarization resistance (Rp) were affected greatly by alloying Co to Nitinol alloy. Our observations indicated that the corrosion resistance of the ternary alloy, Ni47Ti49Co4 SMA, offers superior corrosion resistance in artificial urine when compared to Ni51Ti49 SMA, which was suitable for medical applications.en
dc.description.sponsorshipI am grateful for the financial support of the Chemistry Department, University of Taif, Kingdom of Saudi Arabia. I also thank Core laboratories in King Abdullah University of Science and Technology (KAUST) for performing XRD and XPS analysis.en
dc.publisherAmerican Chemical Society (ACS)en
dc.titleElectrochemical Properties of Ni 47 Ti 49 Co 4 Shape Memory Alloy in Artificial Urine for Urological Implanten
dc.typeArticleen
dc.identifier.journalIndustrial & Engineering Chemistry Researchen
dc.contributor.institutionTaif University, Taif, Saudi Arabiaen
dc.contributor.institutionMinistry of Justice, Cairo, Egypten
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