Influence of rare earths on electrochemical corrosion and wear resistance of RE–Cr/Ti pack coatings on cemented 304 stainless steel

Xing, Xiu‐Shuang; Wang, Hefeng; Lu, P.; Zhi-jun, Han

doi:10.1016/j.surfcoat.2016.02.001

Cited by 21 publications

(6 citation statements)

References 32 publications

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“…It indicates that 304 stainless steel and Al [35]. The density of Al 2 O 3 is 3.5 g/cm 3 , and the density of Ni is 8.9 g/cm 3 . Ni has good wettability with 304 stainless steel.…”

Section: Resultsmentioning

confidence: 95%

“…Al 2 O 3 content is greatly reduced in the lower part of the ceramic layer, so the microhardness of the cladding zone first increases and then decreases. This is related to significance difference between the Al 2 O 3 (3.5 g/cm3 ) and 304 stainless steel densities (7.93 g/cm 3 ) causing the concentration gradient of Al 2 O 3 . This microhardness trend is related to composite coating microstructure composition…”

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confidence: 99%

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Microstructure, microhardness and corrosion resistance of laser cladding Al2O3@Ni composite coating on 304 stainless steel

2021

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The microstructure, microhardness and corrosion resistance of laser cladding Al 2 O 3 @Ni composite coating were investigated. The Al 2 O 3 @Ni core-shell metalceramic powders synthesized via electroless plating method were used as laser cladding materials. According to the results of scanning electron microscopy and energy dispersive spectrometer, the microstructure of the Al 2 O 3 @Ni composite coating gradually transitioned from columnar crystal to cellular crystal and equiaxed crystal along the bottom to the surface. Furthermore, the Ni particles and Al 2 O 3 particles separated when laser heating, then formed Ni metallurgical bonding layer and Al 2 O 3 ceramic layer, respectively. The microhardness of Al 2 O 3 @Ni composite coating was up to 917.0 HV, which was about 5.7 times that of 304 stainless steel. In addition, immersion and electrochemical tests revealed that Al 2 O 3 @Ni composite coating exhibited excellent corrosion resistance compared with 304 stainless steel. The corrosion current density of the Al 2 O 3 @Ni composite coating (36.493 lA cm -2 ) was about 67.0% lower than that of 304 stainless steel (110.592 lA cm -2 ). Meanwhile, the corrosion mechanism of Al 2 O 3 @Ni composite coating was revealed. Dense Al 2 O 3 @Ni composite coating can inhibit the penetration of Cland H ? , making the corrosion reaction difficult to occur. Instruction 304 stainless steel is extensively used in chemical plants, food processing and mechanical engineering due to a combination of excellent corrosion resistance, good processing performance and low cost [1, 2]. In most corrosive conditions, 304 stainless steel proves excellent corrosion resistance, because passive film forms on the surface, which can provide important protective properties [3]. However, many

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“…It indicates that 304 stainless steel and Al [35]. The density of Al 2 O 3 is 3.5 g/cm 3 , and the density of Ni is 8.9 g/cm 3 . Ni has good wettability with 304 stainless steel.…”

Section: Resultsmentioning

confidence: 95%

mentioning

confidence: 99%

Microstructure, microhardness and corrosion resistance of laser cladding Al2O3@Ni composite coating on 304 stainless steel

2021

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“…Over time, new materials that do not affect the performance of the human body and can thus be utilized as biomaterials, specifically in orthopedics, have been developed [10][11][12]. Titanium and its different alloys are commonly used in prosthesis fabrication because these materials possess characteristics such as high corrosion resistance, favorable biocompatibility, and good mechanical features that allow the use of titanium in a wide range of applications [13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

“…It is difficult to generate an oxidation process on the surface of these elements. Therefore, these types of materials can be useful as protective barriers against corrosive processes and could mitigate pitting and prevent degradation of the implant [12,15].…”

Section: Introductionmentioning

confidence: 99%

Enhancement of the Pitting Corrosion Resistance of AISI 316LVM Steel with Ta-Hf-C/Au Bilayers for Biomedical Applications

Guzmán

Aperador

Yate

2017

Journal of Nanomaterials

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Tantalum carbide (TaC), hafnium carbide (HfC), and Ta-Hf-C mixed coatings with and without a gold (Au) interlayer were deposited on 316LVM steel substrates by the magnetron cosputtering technique in order to improve the corrosion resistance of steel substrates in a simulated biological fluid. To study the effect of the gold interlayer on pitting corrosion, the different systems were placed in contact with Ringer’s solution at pH 7.4 and a temperature of 37°C. The electrochemical properties of the coatings were determined using polarization curves. Subsequently, the surface morphologies were observed using scanning electron microscopy (SEM) in order to analyze the corrosion processes on the different surfaces. The gold interlayer was found to significantly improve the electrochemical properties of the system, showing a decrease in the pitting corrosion and deterioration rate, while it is expected that the binary and ternary carbides provide mechanical stability to the bilayers protecting the gold.

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“…Though previous researchers have studied the influence of rare earths on some electrodeposited coatings, most of them have been applied to the process of chromium, nickel, copper, iron and their alloy plating. There have been few reports that have focused on the role of rare earth compounds in Pd alloy electroplating [1][2][3]7,8]. In order to further improve the performance of Pd-Ni alloy coating and understand the effects of rare earth metals on the electroplating process of Pd-Ni, in this paper, different contents of CeCl 3 were introduced in a Pd-Ni basic plating electrolyte; the throwing power of the rare earth on the plating solution was studied, and the main physical properties of the coating such as bonding strength, hardness, porosity, and corrosion resistance in a hot, diluted H 2 SO 4 solution were investigated by weight loss and polarization tests combined with the XRD and SEM/EDS methods.…”

mentioning

confidence: 99%

The Improvement of Hardness and Corrosion Resistance of Electroplated Pd-Ni Film on 316L Stainless Steel by CeCl3

Wang

Zuo

et al. 2020

Coatings

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By using the methods of XRD, SEM/EDS, electrochemical polarization, and a weight loss test, the effects of the rare earth salt CeCl 3 on the adherence, hardness, porosity and corrosion resistance of an electroplated Pd-Ni film on 316L stainless steel were studied. The results showed that by adding 1.0 g L −1 CeCl 3 in the plating bath, the obtained Pd-Ni film was obviously improved. The grain size was refined, and the microstructure was more compact and uniform. The film hardness and the adherence to the substrate increased, and the corrosion resistance in a 20 wt % H 2 SO 4 solution (80 • C) obviously increased. Ce 3+ increased the throwing power of the bath, which resulted in more uniform current distribution and strengthened the cathodic polarization degree during the electroplating process.The rare earths have been used in many fields such as electroplating, surface conversion coating, heat treatment, metal corrosion protection, and friction resistance, which makes them good prospects for applications [1-6] due to their unique electronic structures and chemical activity. Electroplating is a traditional surface protection technology. In the electroplating process, adding a small amount of soluble rare earth salt in the plating bath can improve the properties of the coatings, such as some physical properties and corrosion resistance [1,3,4] In addition, a rare earth salt can improve the throwing power (T.P.) of the plating solution, reduce the grain size of the plating alloy, and make the microstructure of the coating more uniform [7-9]. The T.P. is a measure of an electroplating solution's ability to plate a uniform film over an irregularly shaped cathode, which can be evaluated by using a Haring-Blum rectangular cell. Under the same plating conditions, the larger the T.P. value, the stronger throwing power of the electroplating solution and the more uniform the film formed on the surface of the substrate [9].The palladium film has excellent corrosion resistance, abrasive resistance, electrical conductivity, catalytic properties, hydrogen evolution performance, and a white appearance, all of which have led to its use as good hydrogen storage and catalytic materials. It has also been widely used in the electronics industry, in applications such as semiconductors and printed circuit boards, and the decorative industry [10,11]. In our previous study, Pd film plating on stainless steel was shown to greatly improve corrosion resistance in strong reductive corrosive environments, such as a hot, diluted sulfuric solution, by effectively improving the passive ability of the steel [12]. Pd-Ni and Pd-Cu alloy coatings with good surface micro-hardness and adhesive strength were deposited on 316L stainless steel by electroplating, and these coatings showed very good corrosion resistance in a hot sulfuric acid solution and an acetic

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Influence of rare earths on electrochemical corrosion and wear resistance of RE–Cr/Ti pack coatings on cemented 304 stainless steel

Cited by 21 publications

References 32 publications

Microstructure, microhardness and corrosion resistance of laser cladding Al2O3@Ni composite coating on 304 stainless steel

Microstructure, microhardness and corrosion resistance of laser cladding Al2O3@Ni composite coating on 304 stainless steel

Enhancement of the Pitting Corrosion Resistance of AISI 316LVM Steel with Ta-Hf-C/Au Bilayers for Biomedical Applications

The Improvement of Hardness and Corrosion Resistance of Electroplated Pd-Ni Film on 316L Stainless Steel by CeCl3

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