Properties and Tribologic Behavior of Titanium Carbide Coatings on AISI D2 Steel Deposited by Thermoreactive Diffusion

Kurt, Bülent; Günen, Ali; Kanca, Yusuf; Koç, Vahdettin; Gök, Mustafa Sabri; Kirar, Ersan; Askerov, Khangardash

doi:10.1007/s11837-018-3108-5

Cited by 19 publications

(6 citation statements)

References 23 publications

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“…[29][30][31][32][33] Metallurgical bonding can be formed between the substrate and the coating, producing excellent processing performance. 34 It has been extensively considered that the coating prepared by pack-cementation chromising has the superiority of excellent wear and/or corrosion resistance, [35][36][37][38] which becomes the key for AFA steels to be able to be applied to high-load, high-speed, high-temperature and corrosion-resistant gears and/or shafts. However, a carbon-poor zone may arise between the Cr-rich layer and the substrate, and the carbon-poor zone will cause performance degradation because its hardness is lower than that of the substrate.…”

Section: Introductionmentioning

confidence: 99%

Gradient Cr–AlN composite coating prepared on alumina-forming austenitic steel

Zhang,

Feng,

Wang

et al. 2024

Surface Engineering

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A gradient composite coating of Cr–AlN with an outer Cr-rich layer and an inner AlN-rich layer was deposited on the alumina-forming austenitic (AFA) steel surface by pack-cementation chromising. The phase composition, element distribution, and microstructure of the coating were characterised and analysed. The microhardness and the friction and wear performance at 600 °C were tested. The results show that the outer Cr-rich layer mainly consists of a polycrystalline Cr–Fe solid solution and a small amount of Cr2C and (Cr, Fe)2N1− x particles. The inner layer contains plenty of AlN particles with different sizes dispersed on the Cr–Fe solid solution. The formation of AlN particles is closely related to the spontaneous chlorination and nitridation reaction. The addition of Y2O3 particles in the encapsulated powder promotes the uniformity of Cr plating and the growth of AlN particles. The gradient composite coating remarkably improves the microhardness and high-temperature wear resistance of AFA steel.

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Section: Introductionmentioning

confidence: 99%

Gradient Cr–AlN composite coating prepared on alumina-forming austenitic steel

Zhang,

Feng,

Wang

et al. 2024

Surface Engineering

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“…Many methods are used to prepare TiC coatings on D surfaces, such as electroplate, [19] CVD, [20] PVD, [21] magnetron sputtering, [22] microwave heating, [11] molten salt method, [23] and the thermoreactive diffusion technique. [24,25] Among them, the molten salt method can quickly transport the reaction source atoms to the surface of the reaction matrix for the combination reaction by using low melting point salts as the molten pool and reaction medium, which can realize the combination reaction at a lower normal reaction temperature. Compared with other preparation methods, the molten salt method is a more efficient, convenient, low-cost, and clean preparation process, which has great potential for industrial application.…”

Section: Introductionmentioning

confidence: 99%

Effect of Chlorine Salts on TiC Coating Morphology and Bonding Strength of Diamond Surface in Molten Salt Reaction

Meng

Huang

2023

Cryst. Res. Technol.

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To obtain a high‐quality TiC coating on the diamond (D) surface and improve the interfacial properties of metal matrix composites, the optimized molten salt method is used to prepare TiC coatings on the D surface. The effects of NaCl, KCl, and NaCl–KCl molten salts on the uniformity, surface morphology, composition, and bonding ability of TiC coatings are investigated by scanning electron microscopy, energy‐dispersive X‐ray spectroscopy (EDS), X‐ray diffraction, and cold–hot cycling experiments. The results show that the boiling and pickling processes after the molten salt reaction can effectively remove the residual chloride salts and Ti powders to obtain clean TiC‐coated D. The TiC particles of the coating surfaces prepared by NaCl and KCl molten salts are finer and more uniform, which is due to their higher melting points and shorter real reaction time compared with NaCl–KCl mixed salts. The TiC coating prepared by KCl has the best bonding ability and can withstand 50 times as many cold–hot cycles due to its uniform fine deposition particles and appropriate thickness. And, during cold–hot cycles, it can be found that the TiC coating cracking and shedding occur primarily at the edges and corners of the D with internal thermal stress concentration.

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“…Due to the chemical composition, a very satisfactory level of plasticity and toughness can be achieved by hardening and tempering after appropriate heat treatment for HSLA steel [45]. Surface hardening processes are among the most straightforward and cost-effective ways to enhance iron-based materials' mechanical properties and corrosion resistance [46]. With these methods, quenching, laser hardening, and similar surface modification processes can be performed without any atomic diffusion relying on the chemical combination of the material.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Marine Corrosion and Tribocorrosion Resistance of Offshore Mooring Chain Steel by Aluminizing Process

Alkan

2022

Brodogradnja

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The safety of mooring systems and accessories is one of the most critical issues in the structural integrity of floating oil/gas and renewable offshore structures. Mooring chains and accessories operate under dynamic conditions in harsh marine environments. They are subject to severe wear and corrosion between their links due to relative movement from waves, wind, and ocean currents that disrupt structural integrity. To cope with this problem, the pack-aluminizing process was applied on the R4 grade offshore mooring chain steel for 2 h at 850 °C to improve corrosion and wear-corrosion (tribocorrosion) resistance in 3.5% NaCl. The tribocorrosion behaviour of untreated and aluminized samples was investigated by a tribo-electrochemical setup that simultaneously allows for collecting the wear and corrosion data. Potentiodynamic and potentiostatic corrosion and tribocorrosion tests were carried out to understand corrosion kinetics. Optical, SEM, XRD and EDS analyses were performed to characterize the aluminide layer and surface morphologies before and after tribocorrosion investigations. In polarization scans under corrosion and tribocorrosion conditions, the current showed a significant activation stretch of several orders of magnitude, with minor potential changes in the anodic region. Due to the galvanic effects of sliding under natural electrochemical conditions, the untreated R4 alloy exhibited cathodic properties in the wear track, while the aluminium coating was out of the wear track due to its oxide-forming ability. At the cathodic potential, two hard Al2O3 materials under pure mechanical effects and third bodies emerging from cracks on the coating surface increase the friction coefficient (COF), while the oxide product film, which has a lubricating ability and pits which reduces the contact area, caused a decrease in COF at the high anodic potential. The study revealed that while the aluminide layer improved the corrosion and tribological character of R4 alloy, material loss from wear track increased due to micro fractures and cracks in the coating layer during sliding tribocorrosion conditions.

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Properties and Tribologic Behavior of Titanium Carbide Coatings on AISI D2 Steel Deposited by Thermoreactive Diffusion

Cited by 19 publications

References 23 publications

Gradient Cr–AlN composite coating prepared on alumina-forming austenitic steel

Gradient Cr–AlN composite coating prepared on alumina-forming austenitic steel

Effect of Chlorine Salts on TiC Coating Morphology and Bonding Strength of Diamond Surface in Molten Salt Reaction

Enhancement of Marine Corrosion and Tribocorrosion Resistance of Offshore Mooring Chain Steel by Aluminizing Process

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