Abrasive wear maps for High Velocity Oxy Fuel (HVOF) sprayed WC-12Co and Cr 3 C 2 −25NiCr coatings

Vashishtha, Nitesh; Sapate, S. G.

doi:10.1016/j.triboint.2017.04.037

Cited by 70 publications

(32 citation statements)

References 60 publications

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“…Each coating technique differs in many respects such as form of feed stock materials (powders, wire, rod), coating thickness, substrate temperature, component geometry and/or size constraint etc [17]. The selection of materials for wear resistant applications is influenced by the way wear takes place such as sliding, abrasive and erosive wear [18][19][20][21][22][23].The prediction of wear resistance under a given wear situation is influenced by the contact conditions, variables affecting the wear, There are many factors that influence the coating characteristics such as effect of heat treatments, compositions, binders, types of spraying method, temperatures, size of feedstock powder, types of hard metals etc.HVOF sprayed WC-12Co and75 Cr3C2-25NiCr coatings are used at high temperature, wear and corrosion. WC-12Co and 75Cr3C2-25NiCr coatings are used under different wear conditions such as sliding wear (e.g.…”

Section: Introductionmentioning

confidence: 99%

Tribological behavior of thin film coating-a review

Yadaw

Singh²,

Chattopadhyaya³

et al. 2018

IJET

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An automotive industry sectors are facing major challenges to produce materials of high hardness, low wear rate and corrosive resistant due to international intrinsic norms. Scientist and researchers are developing new materials with different surface properties to come over the international intrinsic norms and hence, they are trying to enhance tribological behavior and increase the life of automotive parts, make the parts corrosive resistant. Therefore, it has become essential to explore the new combinations of coating materials. A tribome-chanical effect of hard metal (WC-12 % Co and Cr3C2-25 % NiCr) coating on the cast iron and steel substrate were compared. Micro hardness, porosity, microstructure, corrosion and economical factor were compared and concluded that the hardness of WC-12%Co & Cr3C2-25NiCr coated on mild steel substrate were comparatively superior but the Cr3C2-NiCr coated cast iron substrate was better over WC-12%Co because it was more economical and corrosive resistant and competitive wear characteristics and as the temperature and load are increased, the Cr3C2-NiCr shows excellent wear resistances.

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Section: Introductionmentioning

confidence: 99%

Tribological behavior of thin film coating-a review

Yadaw

Singh²,

Chattopadhyaya³

et al. 2018

IJET

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“…plasma spray, detonation gun, flame spray etc.) [15][16][17][18][19] . High particle velocity and low flame temperature in HVOF process leads to low decomposition of WC and Cr 3 C 2 particles, which has been reported beneficial for wear resistance of WC-Co and Cr 3 C 2 -NiCr coatings 16,20,21 .…”

Section: Introductionmentioning

confidence: 99%

“…The important factors which influence abrasive wear behaviour of carbide based coatings are carbide particle size, hardness of carbide phase, nature of binder apart from abrasive particle properties; size, shape and hardness. The important abrasive wear mechanisms in WC and Cr 3 C 2 based coatings involve fatigue, binder extrusion, carbide pull out, carbide fracture, intergranular cracking and splat fracture severity of which depends on abrasive wear situations 9,19,32,33 . Tribo film formation during abrasive wear process also alters wear and friction response of thermally sprayed cermet coating as influenced by sliding speed, load, nature, composition and thermodynamic stability of oxides 19,34,35 .…”

Section: Introductionmentioning

confidence: 99%

“…The important abrasive wear mechanisms in WC and Cr 3 C 2 based coatings involve fatigue, binder extrusion, carbide pull out, carbide fracture, intergranular cracking and splat fracture severity of which depends on abrasive wear situations 9,19,32,33 . Tribo film formation during abrasive wear process also alters wear and friction response of thermally sprayed cermet coating as influenced by sliding speed, load, nature, composition and thermodynamic stability of oxides 19,34,35 . The formation of WO 3 , dense CoWO 4 tribo films due to tribo oxidation phenomenon helped in reducing friction coefficient and wear rate of WC-Co coating, whereas spinel phase NiCrO 4 formation in abrasive wear of Cr 3 C 2 -NiCr coatings resulted in improved friction and wear response 19,35 .…”

Section: Introductionmentioning

confidence: 99%

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Effect of Experimental Parameters on Wear Response of Thermally Sprayed Carbide Based Coatings

Vashishtha

Sapate

2018

Mat. Res.

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Friction and abrasive wear response of WC-12 Co and Cr 3 C 2-25 NiCr coatings was studied. Abrasive wear experiments were conducted with SiC abrasive particles with varying load and sliding speeds. The results were analyzed using SEM, XRD and XPS observations of worn surfaces, wear debris and worn out abrasive paper. Friction coefficient diminished with rise in sliding speed and increased for increase in load while wear rates decreased for increasing sliding speed for both coatings. WC-12 Co coating had better wear resistance than Cr 3 C 2-25 NiCr coating while Cr 3 C 2-25 NiCr coating displayed lower friction coefficient. The variation in wear rate and friction response of coatings was due to combined effects of adhesion, abrasion and tribo oxidation effects. The composition of tribo films was strongly influenced by load and sliding velocity and altered friction and wear response of the coatings.

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“…A lot of researchers have explored this process to obtain carbide based coatings like WC-Co, NiCr-Cr3C2 [1][2][3][4][5][6][7]. The potential of this process to obtain oxide based coatings have largely been ignored due to the low deposition temperatures unlike that of plasma spraying which is conventionally adopted for oxide coatings.…”

Section: Introductionmentioning

confidence: 99%

Development and Characterization of Ni-YSZ Coating on Stainless Steel by HVOF Process

Srivastava¹,

Chakradhar²,

Prasad³

2017

IJERT

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Abstract-The objective of this study is to deposit oxide based cermet coating i.e. Nickel -yttria stabilized zirconia, Ni-YSZ on stainless steel (SS) by HVOF process. The YSZ content in the coating is 30 and 50 wt. %. The coating has been characterized by X-ray diffraction (XRD) and scanning electron microscopy (FESEM). XRD studies reveal the presence of Ni and YSZ in the coating. The microstructural studies of the Ni-YSZ coating revealed the presence of porosity and micro cracks. The pin-ondisc studies revealed that the wear resistance of Ni-30YSZ coating is better than that of Ni-50YSZ and bare SS substrate under dry sliding conditions. Also, the coefficient of friction is low for Ni-30YSZ coating compared to the Ni-50YSZ coating. The wear rate of Ni-30YSZ coating is equivalent to that of hard chrome coating suggesting it to be a probable substitute. It was seen from the polarization studies that the HVOF deposited Ni-YSZ coatings displayed poor corrosion resistance compared to the uncoated SS due to the presence of porosity and micro-cracks a characteristic feature of HVOF coatings.

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Abrasive wear maps for High Velocity Oxy Fuel (HVOF) sprayed WC-12Co and Cr 3 C 2 −25NiCr coatings

Cited by 70 publications

References 60 publications

Tribological behavior of thin film coating-a review

Tribological behavior of thin film coating-a review

Effect of Experimental Parameters on Wear Response of Thermally Sprayed Carbide Based Coatings

Development and Characterization of Ni-YSZ Coating on Stainless Steel by HVOF Process

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