The corrosion protection ability of TiAlN coatings produced with CA-PVD under superimposed pulse bias

Er, Dilan; Azar, Golnaz Taghavi Pourian; Kazmanlı, Kürşat; Ürgen, Mustafa

doi:10.1016/j.surfcoat.2018.04.034

Cited by 35 publications

(13 citation statements)

References 37 publications

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“…This is due to the greater capacitance of the films compared to the permeable CrO x passive layer formed on the uncoated 304 ss substrates, against electrolyte diffusion toward the coating/304-ss interface. The experimental measurement uncertainties in Table 2 are well within expected values based upon previous results for transition-metal-nitride/ss corrosion studies as shown in references [69,75]. Overall, the fits to the equivalent circuit are better than 95% in all cases.…”

Section: Impedance Measurementssupporting

confidence: 85%

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Corrosion Resistant TiTaN and TiTaAlN Thin Films Grown by Hybrid HiPIMS/DCMS Using Synchronized Pulsed Substrate Bias with No External Substrate Heating

et al. 2019

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Ti0.92Ta0.08N and Ti0.41Al0.51Ta0.08N thin films grown on stainless-steel substrates, with no external heating, by hybrid high-power impulse and dc magnetron sputtering (HiPIMS/DCMS), were investigated for corrosion resistance. The Ta target was operated in HiPIMS mode to supply pulsed Ta-ion fluxes, while two Ti (or Ti and Al) targets were operated in DCSM mode in order to provide a high deposition rate. Corrosion resistance was investigated using potentiodynamic polarization and electrochemical impedance spectroscopy employing a 3.5% NaCl solution at room temperature. The 300-nm-thick transition-metal nitride coatings exhibited good corrosion resistance due to film densification resulting from pulsed heavy Ta-ion irradiation during film growth. Corrosion protective efficiencies were above 99.8% for both Ti0.41Al0.51Ta0.08N and Ti0.92Ta0.08N, and pore resistance was apparently four orders of magnitude higher than for bare 304 stainless-steel substrates.

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Section: Impedance Measurementssupporting

confidence: 85%

“…To better understand the EIS results in Figure 6, the data are fit with an equivalent circuit (EC) model [55,[68][69][70], which represents the transport of charge, with the equivalent amplitude and phase angle [54], during the electrochemical experiments. Values of the circuit components are a function of frequency ω.…”

Section: Impedance Measurementsmentioning

confidence: 99%

Corrosion Resistant TiTaN and TiTaAlN Thin Films Grown by Hybrid HiPIMS/DCMS Using Synchronized Pulsed Substrate Bias with No External Substrate Heating

et al. 2019

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“…Therefore, S 1 and S 2 can be calculated according to the geometric relationship [38]: where H 1 and H 2 represent the depths of the coating below and above the surface of the substrate, respectively, W denotesthe width of the coating. Based onthe measured values of H 1 , H 2 and W,the dilution rates of three coatingswere calculated according to equations (1)- (3). As shown in table 1, the dilution ratehas no significant changes with the increase in x (70.9% for x=0, 72.4% for x=1.0 and 70.1% for x=2.0).…”

Section: Resultsmentioning

confidence: 99%

“…Up to now, many surface modification methods have been explored and applied to improve surface properties of titanium alloys [1], including electroplating [2], physical vapor deposition [3], chemical vapor deposition [4], micro-arc oxidation [5], and so on [6][7][8][9]. However, the protective coatings prepared by above methods are usually thin (micrometer scale in thickness) and loose in microstructure, and have a weak bonding with the substrate, whose applications are greatly limited in the harsh corrosion wear environment.…”

Section: Introductionmentioning

confidence: 99%

Investigation into corrosion and wear behaviors of laser-clad coatings on Ti6Al4V

Zhang

Jiang

et al. 2020

Mater. Res. Express

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TiAlCoCr x FeNihigh-entropy alloys (HEAs) coatings were fabricated on the surface of Ti6Al4V by laser cladding. Their microstructural evolution with the increase in x value (x=0, x=1.0, x=2.0) was investigated in detail. Besides that, the investigation into the effects of the Cr content on their corrosion behaviors and mechanical properties (in terms of hardness and wear resistance) was also carried out comprehensively. The results indicated that two kinds of phases (a solid solution with thehexagonal close-packed (HCP) structureand Ti 2 Ni) were synthesized in the coatings, and the HCP content was gradually increased with the increase in x accompanied with the decrease in Ti 2 Ni content. A HEA coating only composed of single HCP was successfully prepared when x reached 2.0. The electrochemical and immersion tests all confirmed that the coating with x=2.0demonstrated the most excellent corrosion resistance in a0.1 mol·L −1 HCl solution from different aspects including corrosion tendency and corrosion rate without the applied potential, the formation difficult/stability of the passive film and the dissolution rate in the passive state, and corrosion surface morphology. The averagemicrohardness values of the coatings weregraduallyincreasedfrom 656HV 0.2 to 800 HV 0.2 with increasing xfrom 0 to 2.0, which wereabout double that of the substrate (350 HV 0.2 ). Wear resistance of the coatings also exhibited the upward tendency with increasing the x values (0.562 mm 3 at x=2.0, 0.640 mm 3 at x=1.0, 0.641 mm 3 at x=0 and 1.419 mm 3 for the substrate). More Cr addition into the cladding material will contribute to the formation of a HEA coating composed of single HCPwith excellent corrosion and wear resistance.

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“…Nitride-based hard coatings such as TiN, CrN and TiAlN have high requirements on mold surface treatment due to their excellent hardness and tribological properties (Calışkan et al , 2017; Matei et al , 2015; Fenker et al , 2014). The high corrosion resistance of nitride-based coatings has become an important consideration for corrosion protection (Er et al , 2018). Similarly, ceramic oxides are widely used to promote corrosion performance (Zavareh et al , 2018; Wang et al , 2009b), which have applied to the mold industry (Li et al , 2006; Wang et al , 2009a).…”

Section: Introductionmentioning

confidence: 99%

Appraisal on corrosion performances of CrNi, TiAlN/CrNi and CrNi–Al₂O₃–TiO₂ coatings on H13 hot work mold

Dejun

2020

ACMM

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Purpose The purpose of this paper is to evaluate the salt spray corrosion (SSC) and electrochemical corrosion performances of CrNi, TiAlN/NiCr and CrNi–Al2O3–TiO2 coatings on H13 steel, which improved the corrosion resistance of H13 hot work mold. Design/methodology/approach CrNi, TiAlN/NiCr and CrNi–Al2O3–TiO2 coatings were fabricated on H13 hot work mold steel using a laser cladding and cathodic arc ion plating. The SSC and electrochemical performances of obtained coatings were investigated using a corrosion test chamber and electrochemical workstation, respectively. The corrosion morphologies, microstructure and phases were analyzed using an electron scanning microscope, optical microscope and X-ray diffraction, respectively, and the mechanisms of corrosion resistance were also discussed. Findings The CrNi coating is penetrated by corrosion media, producing the oxide of Fe3O4 on the coating surface; and the TiAlN coating is corroded to enter into the CrNi coating, forming the oxides of TiO and NiO, the mechanism is pitting corrosion, whereas the CrNi–Al2O3–TiO2 coating is not penetrated, with no oxides, showing the highest SSC resistance among the three kinds of coatings. The corrosion potential of CrNi coating, TiAlN/CrNi and CrNi–Al2O3–TiO2 coatings was –0.444, –0.481 and –0.334 V, respectively, and the corresponding polarization resistances were 3,074, 2,425 and 86,648 cm2, respectively. The electrochemical corrosion resistance of CrNi–Al2O3–TiO2 coating is the highest, which is enhanced by the additions of Al2O3 and TiO2. Originality/value The CrNi, TiAlN/CrNi and CrNi–Al2O3–TiO2 coatings on H13 hot work mold were firstly evaluated by the SSC and electrochemical performances.

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The corrosion protection ability of TiAlN coatings produced with CA-PVD under superimposed pulse bias

Cited by 35 publications

References 37 publications

Corrosion Resistant TiTaN and TiTaAlN Thin Films Grown by Hybrid HiPIMS/DCMS Using Synchronized Pulsed Substrate Bias with No External Substrate Heating

Corrosion Resistant TiTaN and TiTaAlN Thin Films Grown by Hybrid HiPIMS/DCMS Using Synchronized Pulsed Substrate Bias with No External Substrate Heating

Investigation into corrosion and wear behaviors of laser-clad coatings on Ti6Al4V

Appraisal on corrosion performances of CrNi, TiAlN/CrNi and CrNi–Al₂O₃–TiO₂ coatings on H13 hot work mold

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The corrosion protection ability of TiAlN coatings produced with CA-PVD under superimposed pulse bias

Cited by 35 publications

References 37 publications

Corrosion Resistant TiTaN and TiTaAlN Thin Films Grown by Hybrid HiPIMS/DCMS Using Synchronized Pulsed Substrate Bias with No External Substrate Heating

Corrosion Resistant TiTaN and TiTaAlN Thin Films Grown by Hybrid HiPIMS/DCMS Using Synchronized Pulsed Substrate Bias with No External Substrate Heating

Investigation into corrosion and wear behaviors of laser-clad coatings on Ti6Al4V

Appraisal on corrosion performances of CrNi, TiAlN/CrNi and CrNi–Al2O3–TiO2 coatings on H13 hot work mold

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Appraisal on corrosion performances of CrNi, TiAlN/CrNi and CrNi–Al₂O₃–TiO₂ coatings on H13 hot work mold