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

Biesuz, Mattia; Sglavo, Vincenzo M.

doi:10.1016/j.surfcoat.2015.12.063

Cited by 59 publications

(26 citation statements)

References 25 publications

(45 reference statements)

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“…The VC coatings have high adherence on steel substrates [51], hardness in the 1700-3150 HV range [52], high mechanical strength [53], high chemical resistance, and excellent wear resistance [27]. Besides being chemically compatible to grow CVD diamond films, VC has a convenient intermediate thermal expansion coefficient of 6.06 × 10 −6 K −1 [54][55][56], lying midway between diamond and steel.…”

Section: Thermodiffused Vanadium Carbide Coating (Tdvc)mentioning

confidence: 99%

Interlayers Applied to CVD Diamond Deposition on Steel Substrate: A Review

et al. 2017

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Academics and industry have sought after combining the exceptional properties of diamonds with the toughness of steel. Since the early 1990s several partial solutions have been found but chemical vapor deposition (CVD) diamond deposition on steel substrate continues to be a persistent problem. The main drawbacks are the high carbon diffusion from gas phase into substrate, the transition metals on the material surface that catalyze sp 2 bond formation, instead of sp 3 bonds, and the high thermal expansion coefficient (TEC) mismatch between diamond and steels. An intermediate layer has been found necessary to increase diamond adhesion. Literature has proposed many efficient intermediate layers as a diffusion barrier for both, carbon and iron, but most intermediate layers shown have not solved TEC mismatch. In this review, we briefly discuss the solutions that exclusively work as diffusion barrier and discuss in a broader way the ones that also solve, or may potentially solve, the TEC mismatch problem. We examine some multilayers, the iron borides, the chromium carbides, and vanadium carbides. We go through the most relevant results of the last two and a half decades, including recent advances in our group. Vanadium carbide looks promising since it has shown excellent diffusion barrier properties, its TEC is intermediary between diamond and steel and, it has been thickened to manage thermal stress relief. We also review a new deposition technique to set up intermediate layers: laser cladding. It is promising because of its versatility in mixing different materials and fusing and/or sintering them on a steel surface. We conclude by remarking on new perspectives.

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Section: Thermodiffused Vanadium Carbide Coating (Tdvc)mentioning

confidence: 99%

Interlayers Applied to CVD Diamond Deposition on Steel Substrate: A Review

et al. 2017

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“…Additionally, Fe-Cr solid solution, chromium carbides (Cr23C6, Cr7C3 and CrC, etc.) or alloyed cementite ((Cr,Fe)7C3 and (Cr,Fe)23C6) can be formed on the carbon steels after the chromizing treatment [36][37][38][39]. Thereby, the surface layer of the steels becomes more compact due to the entry of large-sized Cr atoms and the formation of chromium compounds.…”

Section: Introductionmentioning

confidence: 99%

Evolution of the Microstructure and Properties of Pre-Boronized Coatings During Pack-Cementation Chromizing

Zeng

Yang

et al. 2020

Coatings

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The effect of chromizing time on the microstructure and properties of B-Cr duplex-alloyed coating prepared by a two-step pack-cementation process was investigated. The phases, microstructure, and element distribution of three coatings obtained were characterized by X-ray diffraction (XRD), secondary electron imaging (SEI), backscattering electron imaging (BSEI), and energy dispersive spectroscopy (EDS), respectively. The results show that as the chromizing time increases, the net-like Fe2B and rod-like CrFeB phases in the coating gradually disappear, and finally completely transform into the block-like Cr2B and CrxCy (Cr7C3 and Cr23C6) phases. The growth kinetics analysis shows that interface reaction dominates the coating growth during the early stage of chromizing, while atomic diffusion gradually controls the coating growth at the later stage. The evolution mechanism of the B-Cr duplex-alloyed coating was also discussed.

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“…Biesuz and Sglavo [16] evaluated vanadium carbide coatings applied on AISI 4140 steel by salt bath TRD and its formation kinetics. Consistent and adhesive VC layers were produced in all temperatures and times.…”

Section: Introductionmentioning

confidence: 99%

Improvement of the Tribological Characteristics of AISI 8620, 8640 and 52100 Steels through Thermo-Reactive Treatments

et al. 2019

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The production of vanadium and niobium carbides (VC and NbC) layers on AISI 8620, 8640, and 52100 steels may increase hardness and wear resistance of substrates. Thermochemical treatments were performed at 1000 °C for 2 and 4 h. The characterization of the treated samples was carried out by means of Knoop microhardness tests, “calotest” type microadhesive wear test, layer adhesion test according to VDI 3198 standard, and X-ray diffraction. Compact and uniform layers of VC and NbC were obtained in all treatments, with hardness up to 2500 HK and microadhesive wear resistance far superior to that of the substrates, indicating the great efficiency of these treatments for tribological applications.

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

Cited by 59 publications

References 25 publications

Interlayers Applied to CVD Diamond Deposition on Steel Substrate: A Review

Interlayers Applied to CVD Diamond Deposition on Steel Substrate: A Review

Evolution of the Microstructure and Properties of Pre-Boronized Coatings During Pack-Cementation Chromizing

Improvement of the Tribological Characteristics of AISI 8620, 8640 and 52100 Steels through Thermo-Reactive Treatments

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