SURFACE ACTIVATION OF NI-TI ALLOY USING ELECTROCHEMICAL PROCESS FOR BIOMIMETIC DEPOSITION OF HYDROXYAPATITE COATING

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YOUSEFPOUR M.; VALI I.; SAEBNOORI E.

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Paper Information

Journal: INTERNATIONAL JOURNAL OF ENGINEERING Year:2014 | Volume:27 | Issue:10 (TRANSACTIONS A: BASICS) Page(s): 1627-1633

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Title

SURFACE ACTIVATION OF NI-TI ALLOY USING ELECTROCHEMICAL PROCESS FOR BIOMIMETIC DEPOSITION OF HYDROXYAPATITE COATING

Author(s)

YOUSEFPOUR M. | VALI I. | SAEBNOORI E. | Issue Writer Certificate

Keywords

NI-TI ALLOY

ELECTRODEPOSITION

BIOACTIVITY

BIOMIMETIC

CALCIUM PHOSPHIDE LAYER

HYDROXYAPATITE

Abstract

Electrochemical depositions of CALCIUM PHOSPHIDE LAYER on NI-TI ALLOY in concentrated simulated body flood (SBF×5) were carried out by cathodic ELECTRODEPOSITION. This layer was deposited on NI-TI ALLOY substrate under 10mA/cm2 current density for 2 hours at room temperature. Then, in order to investigate the BIOACTIVITY of the pre-calcified samples, they were put in SBF for 1 and 3 days at room temperature. The microstructure, chemical composition, and BIOACTIVITY of the coatings were evaluated using scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) techniques. Results showed that the activation of the surface of the NI-TI ALLOY by electrochemical process can significantly enhance the BIOMIMETIC deposition during time. On the other hand, by increasing immersion time of pre-calcified samples in SBF from 1 to 3 days, the BIOMIMETIC coating uniformly covered the surface of the sample. The ratio of the Ca/P for the pre-calcified sample after immersion in SBF for 3 days was about 1.5 which is very close to the Ca/P ratio of stoichiometric HYDROXYAPATITE.

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APA: Copy

YOUSEFPOUR, M., VALI, I., & SAEBNOORI, E.. (2014). SURFACE ACTIVATION OF NI-TI ALLOY USING ELECTROCHEMICAL PROCESS FOR BIOMIMETIC DEPOSITION OF HYDROXYAPATITE COATING. INTERNATIONAL JOURNAL OF ENGINEERING, 27(10 (TRANSACTIONS A: BASICS)), 1627-1633. SID. https://sid.ir/paper/635718/en

Vancouver: Copy

YOUSEFPOUR M., VALI I., SAEBNOORI E.. SURFACE ACTIVATION OF NI-TI ALLOY USING ELECTROCHEMICAL PROCESS FOR BIOMIMETIC DEPOSITION OF HYDROXYAPATITE COATING. INTERNATIONAL JOURNAL OF ENGINEERING[Internet]. 2014;27(10 (TRANSACTIONS A: BASICS)):1627-1633. Available from: https://sid.ir/paper/635718/en

IEEE: Copy

M. YOUSEFPOUR, I. VALI, and E. SAEBNOORI, “SURFACE ACTIVATION OF NI-TI ALLOY USING ELECTROCHEMICAL PROCESS FOR BIOMIMETIC DEPOSITION OF HYDROXYAPATITE COATING,” INTERNATIONAL JOURNAL OF ENGINEERING, vol. 27, no. 10 (TRANSACTIONS A: BASICS), pp. 1627–1633, 2014, [Online]. Available: https://sid.ir/paper/635718/en

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