Effect of TiN/CrN Multilayer Coating by Cathodic Arc Deposition on Wear and Corrosion Behaviours of AZ91D Magnesium Alloy

Tian, Lin; Liu, Er Qiang; Fan, Ai Lan; Qin, Lin; Liu, Dao Xin; Tang, Bin; Pan, Jun

doi:10.4028/www.scientific.net/msf.610-613.870

Cited by 11 publications

(4 citation statements)

References 10 publications

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“…Many macro-particles are seen on the surface of both TiN and CrN/TiN coatings by observing the SEM images of the coating surfaces in Figure 2(a,b). Similar macro-particles were observed for TiN [27] and TiN/ CrN [26] coatings deposited by CAE-PVD. The size of these macro-particles is approximately the same in both coatings, but they are present in TiN single-layer more than CrN/TiN multilayer.…”

Section: Electrochemical Testssupporting

confidence: 79%

“…Multilayer coatings have received specific attention in order to solve these problems. CAE-PVD coating has received much attention because of the unique characteristics that gives to the coating structure [23][24][25][26][27][28]. Creating coatings with a dense, uniform, continuous structure, excellent adhesion to the substrate, good control on the morphology of coatings during deposition using parameter modification, possibility of coating for high melting point coatings and above all possibility of deposition in various coating rates ranging from one nanometer per minute to several micrometers per hours are the remarkable features of the CAE method [29][30][31].…”

Section: Introductionmentioning

confidence: 99%

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Comparing electrochemical behavior of applied CrN/TiN nanoscale multilayer and TiN single-layer coatings deposited by CAE-PVD method

Fazel

Elmkhah

Fattah‐alhosseini

et al. 2020

Journal of Asian Ceramic Societies

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The main goal of this study is to compare the electrochemical behavior of CrN/TiN multilayer coating and TiN single-layer coating applied by cathodic arc evaporation (CAE)-physical vapor deposition (PVD) on the substrate of Ti-6Al-4 V in Hank's solution. So, a TiN single-layer coating was formed using PVD method as well as CrN/TiN multilayer coating under totally the same conditions including deposition temperature, working pressure, bias voltage, cathode current and deposition time. To identify the phases in the coatings, X-ray diffraction (XRD) was utilized in order and field emission scanning electron microscopy (FE-SEM) was used in order to study the microstructure of coating. Potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS) tests were also carried out for corrosion measurements. In the corrosion evaluation, the PDP and EIS tests were performed for the samples after immersion in Hank's solution for 24 hours to reach the steady state. The obtained results from PDP curves showed that the specimen with CrN/TiN multilayer coating exhibited better corrosion behavior than the TiN single-layer coatings. This improvement in corrosion resistance is probably due to the high density of the layers in the CrN/TiN multilayer coating that prevents the penetration of the corrosive solution to the substrate.

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Section: Electrochemical Testssupporting

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Comparing electrochemical behavior of applied CrN/TiN nanoscale multilayer and TiN single-layer coatings deposited by CAE-PVD method

Fazel

Elmkhah

Fattah‐alhosseini

et al. 2020

Journal of Asian Ceramic Societies

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show abstract

“…The corrosion currents and corrosion potentials are obtained from Fig. 4 by Tafel analysis and the corrosion rate is calculated based on Faraday law [11]. The calculated values are shown in Table 1.…”

mentioning

confidence: 99%

Microstructure and Corrosion Resistance of TiN Coating on HSS by Pulsed Bias Cathodic Arc Ion Plating

Xiao

Tang

Tian

et al. 2011

MSF

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TiN coating with thickness of 2.5μm was deposited on high-speed steel (HSS) substrate by pulsed bias cathodic arc ion plating. The surface and cross-section morphologies, composition depth profile and phase structure were characterized by FESEM, GDOES and XRD, respectively. Scratch test for adhesion evaluation, microhardness test for hardness measurement, and potentiodynamic polarization for corrosion resistance test were used. The results show that the TiN coating exhibits smooth surface, dense columnar grain structure and an obviously preferred orientation of TiN(111). The adhesion of the coating to substrate is exceeded more than 100N. The hardness of the coating is about 26 GPa. The low corrosion current density (Icorr) and rather high corrosion potential (Ecorr) value imply that the TiN coating displays a good corrosion resistance in 0.5mol/l NaCl solution. However, pitting is still existed due to the defects in the coating.

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“…The corrosion current i corr and corrosion potential E corr are obtained from Fig. 5 by Tafel analysis and the corrosion rate Vr is calculated based on Faraday law [9]. The calculated data are shown in Table 1.…”

mentioning

confidence: 99%

Microstructure and Corrosion Resistance of Aluminized Coatings on Magnesium Alloy by Pulsed Bias Magnetron Sputtering

Tian

Zhu

Zhang

et al. 2011

MSF

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Aluminized coatings were prepared on AZ91D magnesium alloy using pulsed bias magnetron sputtering. Effects of deposition temperature on the microstructure and corrosion resistance were studied. The microstructure, element distribution and hardness of the coatings were characterized using optical microscopy (OM), X-ray diffraction (XRD), glow discharge optical emission spectroscopy (GDOES), and microhardness tester, respectively. The corrosion behavior of the aluminized coatings was studied by measuring anodic polarization curves in 0.5 wt% NaCl solution and compared with that of bare AZ91D. Results show that the aluminized coatings are composed of a deposition layer and a diffusion layer. With deposition temperature increasing, the thickness of deposition layer decreases while diffusion layer thickness increases. The interdiffusion of Al element with other elements in AZ91D magnesium alloy substrate results in a metallurgical bonding of the coatings with substrate. The coatings are mainly composed of γ-Al and α-Mg phase. A small amount of β-Al12Mg17 phase appears at higher temperature of 450°C. The surface microhardness of magnesium alloy is obviously improved by the aluminized coatings. The hardness gradually decreases along the depth of aluminized coatings and the hardness gradient becomes smooth with the increasing of deposition temperature. The corrosion resistance of magnesium alloy is increased considerably by the aluminized coatings with more positive corrosion potential and an order of magnitude decrease of the corrosion rate than the bare magnesium alloy.

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Effect of TiN/CrN Multilayer Coating by Cathodic Arc Deposition on Wear and Corrosion Behaviours of AZ91D Magnesium Alloy

Cited by 11 publications

References 10 publications

Comparing electrochemical behavior of applied CrN/TiN nanoscale multilayer and TiN single-layer coatings deposited by CAE-PVD method

Comparing electrochemical behavior of applied CrN/TiN nanoscale multilayer and TiN single-layer coatings deposited by CAE-PVD method

Microstructure and Corrosion Resistance of TiN Coating on HSS by Pulsed Bias Cathodic Arc Ion Plating

Microstructure and Corrosion Resistance of Aluminized Coatings on Magnesium Alloy by Pulsed Bias Magnetron Sputtering

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