Nb–Cr complex carbide coatings on AISI D2 steel produced by the TRD process

Castillejo, Fabio; Olaya, Jhon J; Arroyo-Osorio, José Manuel

doi:10.1007/s40430-014-0147-x

Cited by 18 publications

(3 citation statements)

References 7 publications

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“…The hardness values obtained for the carbide coatings are shown in Table 3. The lowest hardness value for M3 is obtained in the sample corresponding to chromium carbide (14.7 GPa), and for the M4 sample, vanadium carbide values above 20 GPa were recorded, which are consistent with other studies [24,25]. Overall, a significant increase in hardness for the chromium-vanadium systems (M1 and M2) was not observed, possibly because there is no substantial atomic substitution between the crystal lattices of the materials that form the coatings.…”

Section: Resultssupporting

confidence: 88%

Wear and Corrosion Resistance of Chromium–Vanadium Carbide Coatings Produced via Thermo-Reactive Deposition

2019

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Chromium carbide, vanadium carbide, and chromium–vanadium mixture coatings were deposited on AISI D2 steel via the thermo-reactive deposition/diffusion (TRD) technique. The carbides were obtained from a salt bath composed of molten borax, ferro-chrome, ferro-vanadium, and aluminum at 1020 °C for 4 h. Analysis of the morphology and microstructure of the coatings was done via scanning electron microscopy (SEM) and X-ray diffraction (XRD), respectively. The hardness of the coatings was evaluated using nano-indentation, and the friction coefficient was determined via pin-on-disk (POD) testing. The electrochemical behavior was studied through potentiodynamic polarization tests and electrochemical impedance spectroscopy (EIS). The XRD results show evidence of the presence of V8C7 in the vanadium carbide coating and Cr23C6 and Cr7C3 in the chromium carbide coating. The hardness value for the vanadium–chromium carbide coating was 23 GPa, which was higher than the 6.70 ± 0.28 GPa for the uncoated steel. The wear and corrosion resistance obtained was higher for the niobium–chromium carbide coating, due to the nature of the ceramic carbide produced.

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Section: Resultssupporting

confidence: 88%

Wear and Corrosion Resistance of Chromium–Vanadium Carbide Coatings Produced via Thermo-Reactive Deposition

2019

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“…Other effects like different nucleation rates among the carbides or inhomogeneity in the salt bath can not be a priori excluded, anyway. Moreover, one has to point out that the V6C5 deficiency cannot be accounted for by thermodynamic effects as it has been suggested for the binary Nb-Cr TRD system [28]. As a matter of fact, at the TRD process temperature, the formation energy of vanadium (-104 ÷ -106 kJ/mol, for mole of carbon) is much lower than that of chromium (-63 ÷ -67, kJ/mol, for mole of carbon) [26] and this would lead to the formation of V6C5 rather than Cr7C3.…”

Section: Resultsmentioning

confidence: 99%

Chromium and vanadium carbide and nitride coatings obtained by TRD techniques on UNI 42CrMoS4 (AISI 4140) steel

Biesuz

Sglavo

2016

Surface and Coatings Technology

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“…In many applications, tool steels are coated with transition metal carbides to improve corrosion resistance. Some authors report the improvement in the corrosion resistance of AISI D2 (111,112,113,114,115,116,117) and AISI H13 115) tool steel with the production of a layer of chromium niobium carbide on the steel surface, and other works have reported that for tool steels the corrosion behavior could be more influenced by its phase composition that the nanocrystalline structure (118) .…”

Section: Tool Steelsmentioning

confidence: 99%

An Overview on the Corrosion Behavior of Steels Processed by Severe Plastic Deformation

Cardonaa

Castillejo

2023

Mater. Trans.

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Ultrafine grained (UFG) and nanostructured steels have gained attention in the last years because of the possibility of improving both strength and ductility, but also because of their potential for improving several properties in metal applications which allows replacing some conventional steels. The refinement of the microstructure obtained through Severe Plastic Deformation (SPD) has allowed for the improvement of mechanical properties and the performing of several studies related to corrosion control, mitigation, and protection. In this review, the corrosion behavior of ultra-fine grained (UFG) steels is presented regarding the existing literature and the microstructural changes produced through different SPD processes. A focus is placed on the importance of the processes for grain refinement and microstructural changes and, therefore, on the corrosion behavior.Keywords: Severe plastic deformation, corrosion behavior, steels Carbon and alloyed steelsCarbon and alloy steels are the most important engineering alloys because they are widely used in many applications. However, they are very susceptible to corrosion environments and require some corrosion control.

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Nb–Cr complex carbide coatings on AISI D2 steel produced by the TRD process

Cited by 18 publications

References 7 publications

Wear and Corrosion Resistance of Chromium–Vanadium Carbide Coatings Produced via Thermo-Reactive Deposition

Wear and Corrosion Resistance of Chromium–Vanadium Carbide Coatings Produced via Thermo-Reactive Deposition

Chromium and vanadium carbide and nitride coatings obtained by TRD techniques on UNI 42CrMoS4 (AISI 4140) steel

An Overview on the Corrosion Behavior of Steels Processed by Severe Plastic Deformation

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