Effect of Temperature on Anti-Corrosive Properties of Diamond-Like Carbon Coating on S355 Steel

Scendo, M.; Staszewska-Samson, Katarzyna

doi:10.3390/ma12101659

Cited by 8 publications

(4 citation statements)

References 25 publications

(31 reference statements)

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“…where I corr is the corrosion current density, M is the molecular weight of the reacting substrate, n is the number of electrons exchanged, and ρ is the density of materials [27].…”

Section: Corrosion Behaviormentioning

confidence: 99%

Structure and Properties of DLC Films Deposited on Mg Alloy at Different C2H2 Flows of Magnetron Sputtering Process

Sun

Cheng

2021

Coatings

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Diamond-like carbon (DLC) film is widely used due to its excellent properties, such as high hardness and high wear resistance. To investigate the advantages of DLC film applied on the surface of Mg alloy, direct current (DC) pulse magnetron sputtering was used to prepare DLC film via plasma sputtering a graphite target and introducing C2H2 gas. The silicon interlayer was fabricated by sputtering the Si target. A scanning electron microscope (SEM), transmission electron microscope (TEM), a nano-indentation instrument, an electrochemical workstation and a pin-on-disc tester were employed to obtain the surface morphology, microstructure, mechanical properties, corrosion behavior and wear resistance of the obtained film, respectively. The results show that the DLC films are dense and compact, and the structure changes from amorphous to nanocrystalline with the increase of C2H2 flow. The film prepared at low C2H2 flow has larger surface roughness, lower deposition rate, higher hardness and elasticity modulus, poorer corrosion resistance and better wear resistance, compared with the film prepared at higher acetylene flow. The self-corrosion potential of the obtained DLC film is higher than −0.95 V, the corrosion current density is 10−7 A/cm2 orders of magnitude, and the wear rate is 10−9 mm3/Nm orders of magnitude. The friction coefficient of the film is less than 0.065, the hardness is 17.3 to 22.1 MPa, and the elastic modulus is 145 to 170 MPa. The DLC films obtained on the surface of AZ91 alloy have good comprehensive properties.

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“…where I corr is the corrosion current density, M is the molecular weight of the reacting substrate, n is the number of electrons exchanged, and ρ is the density of materials [27].…”

Section: Corrosion Behaviormentioning

confidence: 99%

Structure and Properties of DLC Films Deposited on Mg Alloy at Different C2H2 Flows of Magnetron Sputtering Process

Sun

Cheng

2021

Coatings

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“…where Me are the Fe, Ni, Cr, and other metals. It turned out that when the potential of the electrode was changed in the anodic direction, the adsorption layer with the participation of chloride ions [22] was created onto the S235JR surface:…”

Section: Corrosion Testmentioning

confidence: 99%

“…The potentiodynamic polarization curves (Figure 7) were used to designate the corrosion parameters of the tested materials, i.e., S235JR steel, WIn/S, and PIn/S. For this purpose, the method of the extrapolation of rectilinear sections of the Tafel LSV curves were used [21,22]. The values of the corrosion parameters of the tested materials are listed in Table 5.…”

Section: Corrosion Parametersmentioning

confidence: 99%

Corrosion Behavior of Inconel 625 Coating Produced by Laser Cladding

2021

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Anti-corrosion properties of Inconel 625 (In) laser cladding coatings onto the (S235JR) steel (S) were investigated. The coatings were produced with the use of wire (WIn/S) or powder (PIn/S). The mechanical properties of the Inconel 625 coatings were characterized by microhardness measurements. The PIn/S shows the highest hardness. The surface and microstructure of the specimens were observed by a scanning electron microscope (SEM). The surface analysis of the laser cladding coatings by energy-dispersive spectroscope (EDS) indicated that the structure of the WIn, and PIn coatings depend on its production technique. The microstructure of the WIn and PIn coatings have a dendritic columnar character. Corrosion test materials were carried out by using electrochemical methods. The corrosive environment was acidic chloride solution. It turned out that the PIn/S coating, which was produced by laser cladding method with the use of Inconel 625 powder, has the best anti-corrosion properties in an aggressive chloride environment.

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“…The thermogravimetric test was considered in registering the weight gain of the tested materials (W = ∆m/A), as a function of exposure time at a certain temperature (i.e., ∆m/A = f(t)) [29]. In this case the heat treatment of the Al/Cu alloy was carried out at 400 • C or 600 • C in the air atmosphere the exposure time was 9 h, Figure 6.…”

Section: Thermogravimetric Testmentioning

confidence: 99%

Influence of Heat Treatment on the Corrosion Resistance of Aluminum-Copper Coating

Scendo

Spadło

Staszewska-Samson

et al. 2020

Metals

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Influence of heat treatment on the corrosion resistance of the aluminum-copper (Al-Cu) coating on the aluminum substrate was investigated. The coating was produced by the electrical discharge alloying (EDA) method. The surface and microstructure of the specimens were observed by a scanning electron microscope (SEM). The phase analysis of the composite materials by X-ray diffraction (XRD) and energy-dispersive spectroscopy (EDS) indicated that intermetallic compounds (i.e., CuAl2 and Cu9Al4) were formed through reactions between Al and Cu. during the EDA process. A significant increase in the hardness of the Al-Cu coating was affected by the improvement of the alloy structure. The heat treatment of materials was carried out at 400 °C or 600 °C in the air atmosphere. A corrosion test of materials was carried out by using electrochemical methods. The corrosive environment was acidic chloride solution. After heat treatment at 400 °C the mechanical properties of the Al/Cu alloy increased significantly and the oxide layer protect of the alloy surface against corrosion. However, after heat treatment at elevated temperature, i.e., 600 °C it was found that the (Al2O3)ads and (CuO)ads coatings were destroyed. The mechanical properties of the Al/Cu alloy decreased, and its surface has undergone deep electrochemical corrosion.

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Effect of Temperature on Anti-Corrosive Properties of Diamond-Like Carbon Coating on S355 Steel

Cited by 8 publications

References 25 publications

Structure and Properties of DLC Films Deposited on Mg Alloy at Different C2H2 Flows of Magnetron Sputtering Process

Structure and Properties of DLC Films Deposited on Mg Alloy at Different C2H2 Flows of Magnetron Sputtering Process

Corrosion Behavior of Inconel 625 Coating Produced by Laser Cladding

Influence of Heat Treatment on the Corrosion Resistance of Aluminum-Copper Coating

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