Corrosion resistance of low-carbon steel modified by plasma nitriding and diamond-like carbon

Fenili, Cleber Pereira; Souza, Fernando S. de; Marin, Guilherme; Probst, Sônia Maria Hickel; Binder, Cristiano; Klein, Aloı́sio Nelmo

doi:10.1016/j.diamond.2017.11.001

Cited by 33 publications

(10 citation statements)

References 45 publications

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“…This tendency is commonly known as pitting corrosion, and it is made evident in Figure 2c for the samples implanted for 30 minutes at a potential of 0,06 V. A more notable tendency of this phenomena is presented in Figure 2d for blanks and samples implanted for 90 minutes at potentials of 0,06 V and 0,12 V, respectively. (Anandan et al, 2007;Maleki-Ghaleh et al, 2014;Muthukumaran et al, 2010;Padhy et al, 2010;Pereira et al, 2017;Osozawa and Okato, 1976). Several works have attributed the beneficial effect of nitrogen ion implantation in ferrous alloys to different physical and chemical phenomena such as the supersaturation of the atomic structure, the generated stresses, and the defect density (Sanabria et al, 2020).…”

Section: Electrochemical Analysismentioning

confidence: 99%

“…Other works reported that the increase in defect density generated by the expansion of the lattice would reduce localized corrosion. Finally, the beneficial response of the radiation damage of certain materials exposed to ion implantation was more evident than the chemical effect itself (Muthukumaran et al, 2010;Anandan et al, 2007;Padhy et al, 2010;Pereira et al, 2017;Maleki-Ghaleh et al, 2014;Fossati et al, 2006).…”

Section: Electrochemical Analysismentioning

confidence: 99%

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Electrochemical Behavior of a Stainless Steel Superficially Modified with Nitrogen by Three-dimensional Ion Implantation

et al. 2021

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Martensitic-grade stainless steels are widely used in diverse industrial and surgical applications, despite their natural tendency to suffer local and uniform corrosion when continuously exposed to aggressive operation conditions. In order to enhance their surface properties, this paper characterized the performance, in saline solutions, of AISI 420 stainless steel, which was surface-modified by three-dimensional ion implantation using electrochemical techniques. The surface of the samples was implanted with ionized nitrogen particles with an energy of 10 keV, varying the implantation time between 30 and 90 minutes. After the surface treatment, the samples were exposed to a NaCl 3% (w/w) aqueous solution for 21 days. Tafel extrapolation, linear polarization resistance, and electrochemical impedance spectroscopy tests were performed, with the purpose of quantifying the effect of the ion implantation technique against electrochemical corrosion. To establish a comparison, the same tests were also performed on non-treated samples. The results indicated an increase in the corrosion potential, polarization resistance, and a decrease in the current density of implanted samples, thus demonstrating that, by delaying corrosive activity, traditional ion implantation offers better protection against electrochemical corrosion in AISI 420 stainless steel samples implanted with nitrogen.

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Section: Electrochemical Analysismentioning

confidence: 99%

Section: Electrochemical Analysismentioning

confidence: 99%

Electrochemical Behavior of a Stainless Steel Superficially Modified with Nitrogen by Three-dimensional Ion Implantation

et al. 2021

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“…DLC coatings can be prepared by different deposition techniques, including Physical Vapor Deposition (PVD), Chemical Vapor Deposition (CVD) and Liquid Phase Electrodeposition. DLC film exhibits low surface roughness, high hardness, low friction coefficient, strong wear and corrosion resistance, inherently self-lubricating, and can be deposited on the cutting tools, molds, bearings, seal rings and other key components, which is an important development direction in the field of high hardness and wear-resisting coatings in the future [9][10][11][12]. DLC coating helps to improve the durability and adaptability of cutting tools, which is considered to be the strategic material in the 21st century.…”

Section: Introductionmentioning

confidence: 99%

Finite element investigation of cutting performance of Cr/W-DLC/DLC composite coated cutting tool

Hao

Zhang

et al. 2021

Int J Adv Manuf Technol

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Coupled with a thermo-mechanical metal cutting process, rapid tool wear, higher surface roughness and mass heat are caused by the rapid plastic deformation of the workpiece and by the friction along the tool-chip interface. This phenomenon is more predominant in the machining of difficult-to-cut materials. DLC film has been applied as coating material in the machining of difficult-to-cut materials, and shows a good cutting performance. In this study, Cr/W-DLC/DLC coated tools were compared with other three coated tools (i.e., TiC-, TiAlN-, Al 2 O 3 -) to investigate the cutting performance in the machining of Al-Si alloy (AC9B). In addition, the influence of Cr/W-DLC/DLC coated tools on the cutting performance under different cutting speeds was studied. Cutting force, cutting temperature, heat transfer coefficient of the rake face of the tool, cutting deformation rate, plastic deformation of machined surface, the interface temperature and stress were investigated numerically based on Finite Element Method (FEM). Actual cutting experiments were carried out to the verification of the FEM models by means of the cutting force and cutting temperature measurement. The investigation results showed that Cr/W-DLC/DLC coated tools has the lowest cutting force and cutting temperature, good cutting deformation characteristics and lower coating-substrate interface temperature and stress, however appears the maximum value of heat partition coefficient into the cutting tool. With the increasing of cutting speeds, cutting force and cutting temperature showed an increase trend, while the plastic deformation depth of machined surface and heat partition into cutting tool all showed a decrease trend. This investigation can provide the theory basis or technical guidance for the cutting practice of Cr/W-DLC/DLC coated tools.

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“…However, the coating properties can vary widely due to the substrate composition and synthesis conditions, for example, different qualities of the carbon layer can both support or worsen the substrate corrosion resistance. Diamond-like carbon coating, deposited after plasma nitriding, was found to enhance corrosion resistance [7], while carbon nanotubes and nanofibers, may accelerate intergranular corrosion, due to the chromium depletion of the near-surface steel region and chromium carbide precipitation at grain boundaries [8].…”

Section: Introductionmentioning

confidence: 99%

Development of Microstructured Carbon Coatings by Substrate-Catalytic CVD

2021

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Carbon nanostructured films were synthesized by chemical vapor deposition (CVD) on H18 stainless steel (AISI 440C) sheets with an H2/CH4/N2 gas mixture at various substrate temperatures. During the synthesis, the iron and chromium oxide layer was formed between the steel and carbonaceous layer. The carbon films exhibited wall-like and spherical morphologies and structures, as characterized by scanning electron microscopy and Raman spectroscopy. It was found that the synthesis temperature affects the microsphere density and, therefore, also in the electrochemical behavior. The electrochemical behavior of nanostructured carbon coatings strongly depends on the CVD deposition conditions. The best corrosion resistance (Rp = 11.8 MΩ·cm2, Icorr = 4.4 nA·cm−2) exhibits a nanostructured carbon sample with a moderate amount of sp2-C-rich carbon microspheres CμSs synthesized at 700 °C. The corrosion resistance of the nanostructured carbon coating is better than raw stainless steel.

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Corrosion resistance of low-carbon steel modified by plasma nitriding and diamond-like carbon

Cited by 33 publications

References 45 publications

Electrochemical Behavior of a Stainless Steel Superficially Modified with Nitrogen by Three-dimensional Ion Implantation

Electrochemical Behavior of a Stainless Steel Superficially Modified with Nitrogen by Three-dimensional Ion Implantation

Finite element investigation of cutting performance of Cr/W-DLC/DLC composite coated cutting tool

Development of Microstructured Carbon Coatings by Substrate-Catalytic CVD

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