High-temperature erosion behaviour of plasma-sprayed NiCrBSi–graphite coatings

Anand, E. Edward; Natarajan, S.

doi:10.1080/02670844.2018.1467143

Cited by 8 publications

(6 citation statements)

References 38 publications

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“…Cr 3 C 2 addition in NiCrBSi powder produced excellent wear resistance coating and bond strength [12,13]. Plasma-sprayed NiCrBSi powder with 4% graphite addition improved the erosion resistance and microhardness [14]. An abrasive, adhesive, and oxidative wear mechanism exists for HVOF-sprayed composite coating of nickel-based powder and WC-Co [15].…”

Section: Introductionmentioning

confidence: 99%

Tribological Behaviour of Plasma and HVOF-sprayed NiCrSiBFe Coatings

Rukhande¹,

Rathod²

2020

Surface Engineering

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Investigation of tribological behaviour of NiCrSiBFe coating on SS 316L sliding against AISI 52100 bearing steel, alumina (Al 2 O 3 ), and silicon nitride (Si 3 N 4 ) under dry conditions carried out. Air Plasma Spraying (APS) and High Velocity Oxy Fuel (HVOF) thermal spraying methods used to deposit the coatings. The dry sliding wear tests were carried out with the ball on disc machine following the ASTM G99 standard and the normal loads used were 10N, 15N, and 20N along with the constant sliding velocity of 0.5 m s −1 at room temperature. The particle analysis, XRD, SEM, EDX, and nanoindentation were used for the characterisation of the powder, coatings, and worn surfaces. The spraying methods, counter materials, and normal loads were ranked based on the wear loss and coefficient of friction. The main wear mechanisms on the coating's wear track are abrasive and adhesive. The HVOF spraying method revealed enhanced wear resistance property as compared to the plasma-sprayed coating.

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Section: Introductionmentioning

confidence: 99%

Tribological Behaviour of Plasma and HVOF-sprayed NiCrSiBFe Coatings

Rukhande¹,

Rathod²

2020

Surface Engineering

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“…They found that the addition of Y 2 O 3 increased the hardness of 1048HV to 1154HV due to the increased density which subsequently improved the slurry erosion performance. Anand and Natarajan used plasma spray method to apply graphite mixed NiCrBSi coating on 304 stainless steel [59]. Up to 4% of graphite addition, hardness, and erosion performance were improved.…”

Section: Surface Modificationsmentioning

confidence: 99%

Surface and bulk modification techniques to mitigate silt erosion in hydro turbines: a review of techniques and parameters

Singh

Nath

2022

Surface Engineering

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Silt erosion causes big efficiency and economic losses to hydro turbines and other industries involving the relative motion of the slurry/silt. This article reviews various techniques employed in the literature to mitigate the silt erosion. The main prominence is given to the latest technologies rather than the number of articles on the same technology. The available techniques are classified into two broad categories namely, surface modification techniques, and bulk material modification techniques; then reviewed systematically. The parameters (properties) which largely influence the material loss, for corresponding techniques, are also familiarized. In addition to this, how these parameters were improved and why these parameters enhanced the slurry erosion performance are discussed. Surface coating increases the surface hardness, is found to be the most addressed and most successful technique for the said purpose. The hardness of the substrate was found to be the most addressed property which can largely control the silt erosion.

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“…Also, it is known for producing dense coatings with low oxide formation. The APS deposited NiCrBSi-graphite coatings show the minor effect on the erosion behaviour up to 650 °C [11]. The laser remelting composite coatings of NiCrBSi and WC on stainless steel shows the enhanced sliding wear performance up to 600 °C [19].…”

Section: Introductionmentioning

confidence: 97%

“…In some of the research, the NiCrBSi composite coating developed by different processes for high-temperature conditions. The process like laser remelting [6,7], laser cladding [8], pack cementation method [9], plasma spraying [10][11][12], HVOF [13][14][15][16] used for the deposition of the coating. The high-velocity oxy-fuel (HVOF) and atmospheric plasma spray (APS) processes are the extensively used thermal spraying methods for the NiCrBSi powder [17,18].…”

Section: Introductionmentioning

confidence: 99%

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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High-temperature erosion behaviour of plasma-sprayed NiCrBSi–graphite coatings

Cited by 8 publications

References 38 publications

Tribological Behaviour of Plasma and HVOF-sprayed NiCrSiBFe Coatings

Tribological Behaviour of Plasma and HVOF-sprayed NiCrSiBFe Coatings

Surface and bulk modification techniques to mitigate silt erosion in hydro turbines: a review of techniques and parameters

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

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