Passive and electrochemical response of friction stir processed pure Titanium

Fattah‐alhosseini, Arash; Vakili-Azghandi, Mojtaba; Sheikhi, Mohsen; Keshavarz, Mohsen

doi:10.1016/j.jallcom.2017.02.095

Cited by 46 publications

(14 citation statements)

References 31 publications

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“…These electrochemical factors (corrosion potential (E corr ) and corrosion current density (i corr )) were obtained using the Tafel technique. 51,[58][59][60] The obtained results indicate that both the thermodynamic tendency of corrosion and the corrosion kinetics decreases by rising the content of PN2/PAr from 5.2% to 17.6%. Thus, a specimen with a content of 17.6% P N2 /P Ar exhibits the lowest corrosion current density and so the best corrosion resistance.…”

Section: Eis and Pdp Testsmentioning

confidence: 79%

“…Table 4 illustrates the extracted electrochemical factors from the plots of PDP. These electrochemical factors (corrosion potential ( E corr ) and corrosion current density ( i corr )) were obtained using the Tafel technique 51,58–60 . The obtained results indicate that both the thermodynamic tendency of corrosion and the corrosion kinetics decreases by rising the content of PN2/PAr from 5.2% to 17.6%.…”

Section: Resultsmentioning

confidence: 99%

“…In this section, the electrochemical behavior of all samples in distinct percentages of 5.2, 11.1, and 17.6 at a couple of distinct immersion times of 48 and 168 h within the Hank's physiological electrolyte was evaluated using EIS technique as a quick, powerful, nondestructive, convenient, efficient, and surface state‐sensitive method 48–50 . Another advantage of the EIS method is that the reliability of the empirical electrochemical results could be studied via employing the Kramers‐Kronig transforms (KKTs) 51,52 . The obtained Nyquist and Bode plots for coated specimens in distinct percentages of 5.2, 11.1, and 17.6 at a couple of distinct immersion times of 48 and 168 h within the Hank's physiological electrolyte are illustrated in Figures 6 and 7, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…[48][49][50] Another advantage of the EIS method is that the reliability of the empirical electrochemical results could be studied via employing the Kramers-Kronig transforms (KKTs). 51,52 The obtained Nyquist and Bode plots for coated specimens in distinct percentages of 5. seen at medium frequency showing the values of phase are really about the angle of 80.…”

Section: Eis and Pdp Testsmentioning

confidence: 97%

See 3 more Smart Citations

Studying the in vitro corrosion response of nanostructured TaN coatings in Hank's physiological solution

Babaei

Fattah‐alhosseini

Elmkhah

et al. 2021

Int J Applied Ceramic Tech

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The goal of this research is to determine the effect of N 2 pressure to argon pressure on the microstructural analysis and corrosion behavior of nanostructured TaN deposited coatings using a reactive DC-magnetron sputtering (RDCMS) technique.The samples coated microstructure was studied by the X-ray diffraction (XRD) and scanning electron microscope (SEM), and elemental distribution was studied using energy-dispersive X-ray spectroscopy (EDS). To investigate the corrosion behavior of nanostructured TaN coatings, the potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS) tests were performed in Hank's physiological solution. The results of different tests revealed that the coating with a content of 17.6% P N2 /P Ar consisted of hexagonal and orthorhombic TaN phases and had denser microstructure and free pores. This coating showed superior corrosion behavior in comparison to the other ones. Also, the corrosion resistance of this coating raised by increasing the time of immersion from 48 to 168 h.

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Section: Eis and Pdp Testsmentioning

confidence: 79%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Eis and Pdp Testsmentioning

confidence: 97%

See 2 more Smart Citations

Studying the in vitro corrosion response of nanostructured TaN coatings in Hank's physiological solution

Babaei

Fattah‐alhosseini

Elmkhah

et al. 2021

Int J Applied Ceramic Tech

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“…Several previous studies have demonstrated that FSP can enhance both the strength and ductility of face-centered cubic (fcc) metals (Al, Cu, etc.) [16][17][18]. Nevertheless, there is little to know for FSP Zr to enhance its strength and ductility simultaneously [19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Mechanical Properties of Pure Zirconium via Friction Stir Processing

Wang

Han

Yuan

et al. 2019

Acta Metall. Sin. (Engl. Lett.)

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Friction stir processing (FSP), as a new kind of severe plastic deformation technique, can refine and homogenize the microstructure of metallic material. In this study, the effect of FSP on the microstructure and mechanical properties of pure Zr was investigated using electron backscatter diffraction analysis, microhardness and room-temperature tensile testing. The fine-grained (FG) structure with an average grain size of ~ 5.3 μm was obtained in the processed zone, where the average microhardness was ~ 198 HV, 1.6 times higher than that of base metal. Furthermore, tensile property of FG pure Zr exhibited obvious anisotropy owing to strong texture. Both grain size and texture had a significant effect on strength and ductility of FG pure Zr. High yield strength (248 MPa) and ultimate tensile strength (483 MPa), as well as good uniform elongation (10%) were achieved, which demonstrated that FSP was an effective method to fabricate bulk FG pure Zr with high strength and good ductility.

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