NiCrSiBC coatings: Effect of dilution on microstructure and high temperature tribological behavior

Silva, Leandro João da; D'Oliveira, Ana Sofia

doi:10.1016/j.wear.2016.01.015

Cited by 76 publications

(41 citation statements)

References 30 publications

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“…At 700 °C, the wear-track found fully covered with the compacted oxide layers and debris particle. A similar observation has been done by Leandro J. da Silva et al [40] in evaluating the dilution effect on the microstructure and wears at high temperature for NiCrSiBC coatings by plasma method on a stainless steel substrate. Table 3 shows the elements weight percentage perceived at coating wear track.…”

Section: The Co-efficient Of Friction and Wear-track Microstructuresupporting

confidence: 78%

Sliding Wear Investigation of Ni-based Coating for High-Temperature Application

Rukhande¹,

Rathod²,

Bhosale³

2021

Tribol. Ind.

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The effect of high temperature on the sliding wear and friction behaviour of NiCrBSiFe powder coating on stainless steel 316L substrate was investigated. The NiCrSiBFe coatings were obtained using a thermal spray technique. The sliding wear tests were performed as per ASTM G99 on the pin on disc tribometer from room temperature (28 ℃) to 700 ℃ temperature condition. The coating characterization was carried out with X-ray diffraction, scanning electron microscopy, porosity analysis and nanoindentation. A 3D non-contact analysis was performed on the wear-track to obtain the wear rate of the coating at different temperatures. The coefficient of friction and wear rate was obtained for the coatings against silicon nitride (1580 HV 0.3 ) material. The coefficient of friction was obtained as 0.68, 0.15 and 0.51 at room temperature, 300 ℃ and 700 ℃, respectively. The mild wear range confirms the efficacy of the coating at high temperature. The wear rate and coefficient of friction of the coatings were influenced by the oxidation and mechanical properties at the hightemperature conditions. The wear rate increases from 300 o C to 700 o C as the substantial amount of material loss from the coating surface occurred due to the coatings thermal softening and the fragmentation of oxides like CrO3, SiO2 and NiO.

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Section: The Co-efficient Of Friction and Wear-track Microstructuresupporting

confidence: 78%

Sliding Wear Investigation of Ni-based Coating for High-Temperature Application

Rukhande¹,

Rathod²,

Bhosale³

2021

Tribol. Ind.

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“…In the literature, it is found that the tribolayers presence is advantageous due to its lubricating effect, where they act as an interfacial element, reducing the direct contact between body and counter body (Hutchings and Shipway, 2017). There are experimental studies that indicate the observation of this behavior (Silva and D'Oliveira, 2016). In this research, these elements presence, identified only in as-deposited coating for 1000 m sliding distance, contributed to the COF stabilization.…”

Section: Worn Surfaces Analysismentioning

confidence: 63%

“…Despite the advantages highlighted, NI-Cr-B-Si alloy coatings are highly susceptible to cooling cracks appearance (Houdková et al, 2014;Silva and D'Oliveira, 2016;Sousa et al, 2020). LMD deposition process and the laser remelting posttreatment surface have high parametrization complexity due to a large number of variables involved (Davim, 2013;Houdková et al, 2014;Marimuthu et al, 2015;Pôrto et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Effect of Laser Remelting on Tribological Performance of Ni-Cr-B-Si Coatings Deposited by Laser Metal Deposition

et al. 2020

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Ni-superalloys coatings deposited via laser metal deposition (LMD) have been known to perform well in increasing components lifespan and consequently reducing production and repair costs. Although most of these coatings already present good results in its hardness, and tribological behavior, some can be improved by post-deposition treatments, such as laser remelting. In this ambit, the present paper aims to evaluate the laser remelting posttreatment effects on the Ni-Cr-B-Si coating sliding tribological behavior. For this, two conditions were compared: Ni-Cr-B-Si coating as-deposited and Ni-Cr-B-Si coating as-deposited and remelted. The coating's occurrence of superficial macro defects, their microhardness, and tribological performance in the pin-on-disk (ASTM G99) test were compared. Friction coefficient (load cell), volumetric loss (optical interferometry), Archard's wear coefficient and worn surfaces (SEM and EDS), were evaluated. Results show that the laser remelting posttreatment was effective in reducing cooling cracks, increasing hardness and reducing friction coefficient oscillation and volumetric loss average.

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“…Similarly, Ramachandran et al 19 while investigating the role of different testing variables found that the slurry concentration had a greater influence on the wear rate of PTA deposits than the particle size, speed of rotation and slurry bath temperature. Silva et al 20 reported the effect of dilution on the microstructural and wear behavior of metallurgically complex NiCrSiBC alloys being it an important factor affecting the properties of clads. Similarly, Hemmati et al 21 highlighted the role of controlling the dilution level on the microstructural evolution and properties of Ni-based coatings.…”

Section: Introductionmentioning

confidence: 99%

“…Silva et al. 20 reported the effect of dilution on the microstructural and wear behavior of metallurgically complex NiCrSiBC alloys being it an important factor affecting the properties of clads. Similarly, Hemmati et al.…”

Section: Introductionmentioning

confidence: 99%

Laser power and scanning speed influence on the microstructure, hardness, and slurry erosion performance of Colmonoy-5 claddings

Savanth

Singh

Gill

2020

Proceedings of the Institution of Mechanical Engineers, Part L:

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A 4kW Yb: YAG solid-state disc laser, with a four-way co-axial cladding head with powder feeding technique was employed to fabricate single-layer clads of Ni-based hardfacing alloy (Colmonoy-5) on medium carbon steel (ASME SA105) substrate by varying the laser processing parameters namely, beam power level (designated as low: 1200 W, medium: 1400 W, and high: 1600 W) and scanning speed (designated as low: 300 mm/min, medium: 400 mm/min, and high: 500mm/min). The laser clads were evaluated for their microstructural characteristics, microhardness, and slurry erosive wear performance with an aim to understand the effect of process parametric variations on their properties. Microstructural analyses of the clads were carried out using an optical microscope and a field-emission scanning electron microscope with attached energy-dispersive X-ray spectrometer supplemented by their Vickers microhardness testing and X-ray diffraction examination. The variation in laser processing parameters exerted a strong influence on the microstructural features of the clads in terms of γ-Ni dendrite size as well as morphology and distribution of various complex precipitates such as Cr-carbides and borides with relatively uniform distribution observed for the clads corresponding to low laser power and high scanning speed. The variation in laser power had relatively a greater influence on microhardness than the scanning speed variation. Micro-cutting, plastic deformation, crater formation besides ploughing away of the softer matrix were the typical fracture features associated with slurry eroded clads when examined under field-emission scanning electron microscope. Results of the slurry erosive wear tests showed that the clads pertaining to low laser power and high scanning speed exhibited superior wear resistance as compared to their counterparts.

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NiCrSiBC coatings: Effect of dilution on microstructure and high temperature tribological behavior

Cited by 76 publications

References 30 publications

Sliding Wear Investigation of Ni-based Coating for High-Temperature Application

Sliding Wear Investigation of Ni-based Coating for High-Temperature Application

Effect of Laser Remelting on Tribological Performance of Ni-Cr-B-Si Coatings Deposited by Laser Metal Deposition

Laser power and scanning speed influence on the microstructure, hardness, and slurry erosion performance of Colmonoy-5 claddings

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