Effect of molybdenum on the high-temperature properties of TiC-TiB2 reinforced Fe-based composite laser cladding coatings

Zhang, M.; Liu, S.S.; Luo, S. X.; Qu, Kaiqian

doi:10.1016/j.jallcom.2018.01.275

Cited by 32 publications

(4 citation statements)

References 23 publications

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“…The constituent phases of the TB 2 -Co coating were identified by x-ray diffractrometer (XRD). The same peaks of the TiB 2 and α-Fe were reported by Zhang et al [35].…”

Section: X-ray Diffraction Characterizationsupporting

confidence: 86%

Enhancement of tribological and mechanical properties of TiB₂ - Co cladded layer developed by tungsten inert gas cladding on AISI 1020 Steel

Kumar

Das

2022

Surf. Topogr.: Metrol. Prop.

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In the present study, various compositions of TiB2-Co coating were deposited on AISI 1020 mild steel by tungsten inert gas cladding method. In this work, various heat energy of TIG with a fixed travelling speed of 1.5 mm/sec was used to deposit the coating layer. The aim of this study was to investigate the optimal heat input of TIG to develop a thick layer in terms of coating microstructure and bonding quality. The influence of cobalt addition and current variation on microhardness and wear properties of the cladded layer was also investigated. The metallographic examination and microstructural analysis were investigated by X-ray diffraction, scanning electron microscope (SEM) and energy dispersive spectroscopy. The microhardness and wear rate have been analyzed by Vickers microhardness and dry sliding wear test, respectively. The investigations reveal that the influence of heat input on the wear resistance and hardness of the coated layer was significant. The microhardness value increases with increase in wt.% of TiB2 coating powder when TIG parameter is constant. The microhardness value also increases with decrease in heat input of the TIG when composition of the coating is kept constant. The maximum microhardness value was achieved up to 2563 HV0.1 which was 15 times higher than the substrate hardness value of 170 HV0.1. From the wear test result, it was noticed that the minimum wear rate found was 8.24 × 10-8 g/Nm for the coating composed by lower heat input (720 J/mm) and higher wt.% of TiB2 (90 wt.%).

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“…The constituent phases of the TB 2 -Co coating were identified by x-ray diffractrometer (XRD). The same peaks of the TiB 2 and α-Fe were reported by Zhang et al [35].…”

Section: X-ray Diffraction Characterizationsupporting

confidence: 86%

Enhancement of tribological and mechanical properties of TiB₂ - Co cladded layer developed by tungsten inert gas cladding on AISI 1020 Steel

Kumar

Das

2022

Surf. Topogr.: Metrol. Prop.

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“…This was due to the reaction of the C element with Ti and Cr elements in the molten pool, and then Cr 7 C 3 and TiC were formed. Zhang [32] also achieved similar results.…”

Section: The Influence Of Tib2 and Nickel-coated Graphite Content Cha...supporting

confidence: 57%

Effect of TiB2 Content on Properties of Nickel-Coated Graphite Self-Lubricating Coating Prepared by Laser Cladding

Liu

Pang

2021

Coatings

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To improve the anti-wear and friction-reducing properties of self-lubricating coatings, Ni60/Nickel-coated graphite/TiB2 composite coatings with different contents were prepared by laser cladding. The coating properties were characterized by X-ray diffractometer (XRD), scanning electron microscope (SEM), energy spectrometer (EDS), electrochemical workstation, micro-Vickers hardness tester, and friction and wear tester. The results showed that with the increase in TiB2 content, the graphite morphology changed from spherical at 0 wt.% TiB2 content to a little black graphite alone at 14 wt.% TiB2 to irregular agglomerates at 22 wt.% TiB2. Furthermore, the hardness of the coatings increased with increasing TiB2 content, and the 63% Ni60 + 15% nickel-coated graphite + 22% TiB2 coating had the highest hardness. TiC and Cr7C3 were generated in the coatings with the addition of nickel-coated graphite, creating a dispersion reinforcement effect, so that the hardness of these coatings was higher than that of the 86% Ni60 + 0% nickel-coated graphite + 14% TiB2 coating without the addition of nickel-coated graphite. In addition, the 71% Ni60 + 15% Ni-coated graphite + 14% TiB2 coating had the lowest friction coefficient, wear loss, and wear volume, thus exhibiting excellent friction reduction and anti-wear properties. The 71% Ni60 + 15% nickel-coated graphite + 14% TiB2 coating had excellent corrosion resistance.

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“…The uniform and robust surface of the laser clad resulted in minimal material loss during testing. The incorporation of carbides in the dendritic region increased hardness and wear resistance, albeit reducing the mean free path 40 , 41 . Figure 12 c,d showcases the worn surface of the microwave-clad samples, which exhibited more surface damage and material loss than the laser-clad samples.…”

Section: Resultsmentioning

confidence: 99%

A comparative study on characteristics of composite (Cr3C2-NiCr) clad developed through diode laser and microwave energy

Hebbale¹,

Kumar²,

Soudagar

et al. 2023

Sci Rep

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A typical ferrite/martensitic heat-resistant steel (T91) is widely used in reheaters, superheaters and power stations. Cr3C2-NiCr-based composite coatings are known for wear-resistant coatings at elevated temperature applications. The current work compares the microstructural studies of 75 wt% Cr3C2- 25 wt% NiCr-based composite clads developed through laser and microwave energy on a T91 steel substrate. The developed clads of both processes were characterized through a field emission scanning electron microscope (FE-SEM) attached with energy-dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD) and assessment of Vickers microhardness. The Cr3C2-NiCr based clads of both processes revealed better metallurgical bonding with the chosen substrate. The microstructure of the developed laser clad shows a distinctive dense solidified structure, with a rich Ni phase occupying interdendritic spaces. In the case of microwave clad, the hard chromium carbide particles consistently dispersed within the soft nickel matrix. EDS study evidenced that the cell boundaries are lined with chromium where Fe and Ni were found inside the cells. The X-ray phase analysis of both the processes evidenced the common presence of phases like chromium carbides (Cr7C3, Cr3C2, Cr23C6), Iron Nickel (FeNi3) and chromium-nickel (Cr3Ni2, CrNi), despite these phases iron carbides (Fe7C3) are observed in the developed microwave clads. The homogeneous distributions of such carbides in the developed clad structure of both processes indicated higher hardness. The typical microhardness of the laser-clad (1142 ± 65HV) was about 22% higher than the microwave clad (940 ± 42 HV). Using a ball-on-plate test, the study analyzed microwave and laser-clad samples' wear behavior. Laser-cladding samples showed superior wear resistance due to hard carbide elements. At the same time, microwave-clad samples experienced more surface damage and material loss due to micro-cutting, loosening, and fatigue-induced fracture.

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Effect of molybdenum on the high-temperature properties of TiC-TiB2 reinforced Fe-based composite laser cladding coatings

Cited by 32 publications

References 23 publications

Enhancement of tribological and mechanical properties of TiB₂ - Co cladded layer developed by tungsten inert gas cladding on AISI 1020 Steel

Enhancement of tribological and mechanical properties of TiB₂ - Co cladded layer developed by tungsten inert gas cladding on AISI 1020 Steel

Effect of TiB2 Content on Properties of Nickel-Coated Graphite Self-Lubricating Coating Prepared by Laser Cladding

A comparative study on characteristics of composite (Cr3C2-NiCr) clad developed through diode laser and microwave energy

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Effect of molybdenum on the high-temperature properties of TiC-TiB2 reinforced Fe-based composite laser cladding coatings

Cited by 32 publications

References 23 publications

Enhancement of tribological and mechanical properties of TiB2 - Co cladded layer developed by tungsten inert gas cladding on AISI 1020 Steel

Enhancement of tribological and mechanical properties of TiB2 - Co cladded layer developed by tungsten inert gas cladding on AISI 1020 Steel

Effect of TiB2 Content on Properties of Nickel-Coated Graphite Self-Lubricating Coating Prepared by Laser Cladding

A comparative study on characteristics of composite (Cr3C2-NiCr) clad developed through diode laser and microwave energy

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Product

Resources

About

Enhancement of tribological and mechanical properties of TiB₂ - Co cladded layer developed by tungsten inert gas cladding on AISI 1020 Steel

Enhancement of tribological and mechanical properties of TiB₂ - Co cladded layer developed by tungsten inert gas cladding on AISI 1020 Steel