Effect of h-BN addition on the microstructure characteristics, residual stress and tribological behavior of WC-reinforced Ni-based composite coatings

Huang, Xu; Zhang, Jiacheng; Cheng, Yuanfang; Chen, Changrong; Lian, Guofu; Jiang, Jibin; Feng, Meiyan; Zhou, Mengning

doi:10.1016/j.surfcoat.2020.126534

Cited by 24 publications

(4 citation statements)

References 29 publications

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“…BN(h) has a lamellar structure in which strong covalent bonds exist within the basal plane between nitrogen and boron atoms while the weak van der Waals bonds between the atomic planes. This structure provides lubricating properties as it can be easily sheared along the basal plane [17,31]. EDS analysis confirms the silver powder (99 wt.%) with insignificant oxygen content (Figure 3d).…”

Section: Resultsmentioning

confidence: 99%

Friction and wear behaviour of BN(h) and Ag incorporated nickel phosphorous coatings under dry reciprocating sliding conditions

Kiran

Sunil²,

Dumpala

2021

Tribology - Materials, Surfaces & Interfaces

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Ni-P-BN(h)-Ag hybrid composite coatings were fabricated on the steel substrate by a scalable electroless deposition process. The optimum bath composition and operating conditions were selected to obtain defect-free composite coatings with ∼50 μm thickness. Further, to enhance the hardness, as-deposited coatings were subjected to heat treatment in a tubular furnace at 400°C for 1 h. The dry sliding wear behaviour of the as-deposited (AD) and heat-treated (HT400) composite coatings was evaluated using a linear reciprocating tribometer. The average friction coefficient of the hybrid coating was ∼0.14 (in as-deposited condition) and ∼0.16 (in heattreated condition); these values represent 51.72% and 52.94% reduction over non-hybrid Ni-P coatings. The specific wear rate of the as-deposited and heattreated composite coatings was found to be 50% and 43% lower, respectively, than that of conventional Ni-P coatings. Detailed wear track analysis was carried out to identify underlying wear mechanisms and tribochemical interactions.

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Section: Resultsmentioning

confidence: 99%

Friction and wear behaviour of BN(h) and Ag incorporated nickel phosphorous coatings under dry reciprocating sliding conditions

Kiran

Sunil²,

Dumpala

2021

Tribology - Materials, Surfaces & Interfaces

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“…Therefore, seeking a suitable surface coating to improve wear resistance of SK5 steel has become an urgent need to be served. Tungsten carbide (WC) is an important class of wear-resistance material and can be well adjusted by metal melts such as Co, Fe, and Ni, which are widely used to prepare wear-resistance coatings on the surface of mechanical parts [ 1 , 2 , 3 , 4 ].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Tribo-Behavior of WC–Cr3C2–Ni Coatings by Laser Cladding and HVAF Sprayed: A Comparative Assessment

Zhang

Rui-xia

et al. 2023

Materials

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SK5 steel is the base material used for the preparation of the wrinkle scraper, whose service life strongly affects the working efficiency and economic benefits. In this work, WC–Cr3C2–Ni coating was deposited on the SK5 steel substrate by using High-velocity air fuel spray (HVAF) and Laser cladding (LC) processes respectively, named HVAF-WC coating and LC-WC coating. The microstructure and wear resistance of both coatings were analyzed, and were compared with the substrate sample. Results showed that the coatings were adhesive well onto the substrate. More WC with fine crystals is retained in HVAF-WC coating due to low flame flow temperature, while WC of LC-WC coating is characterized by columnar crystals. The wear rate of HVAF-WC and LC-WC coating was 4.00 × 10−7 mm3/(N•m) and 3.47 × 10−6 mm3/(N•m), respectively, which was two and one orders of magnitude lower than SK5 steel with 3.54 × 10−5 mm3/Nm. HVAF-WC coating exhibited the best wear resistance because of significant fine grain strengthening, which wear mechanism is mainly dominated by abrasive wear. Thus, it was thought that HVAF-WC coating is more effective ways to improve the wear resistance of SK5 steel, comparing with LC-WC coating.

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“…Among these coatings, nickel-based tungsten carbide coating (Ni-based WC) has attracted much interest for its excellent wear resistance, service life, and other properties [4]. However, the performance of Ni-based WC coating can not fully meet the current actual demand, due to the interface between WC particles and Ni-base alloy being prone to stress concentration, which would lead to coating crack extension, peeling, and a series of problems [5,6]. Therefore, it is crucial to develop a high wear resistance and high stability of Ni-based WC coating.…”

Section: Introductionmentioning

confidence: 99%

Preparation of high wear resistance nickel based WC coating by carefully adjusting interface structure

Fan

Ou²,

Rong³

et al. 2022

Mater. Res. Express

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In recent years, many scholars have paid attention to wear-resistant coatings for shield machine cutterheads due to their very high consumption rates. Among these coatings, nickel-based tungsten carbide (Ni-based WC) is one of the best, showing both corrosion resistance and wear resistance. However, to further improve the wear resistance of such coatings, there are still numerous issues that need to be resolved. Herein, a new method, distinct from conventional methods, is presented. Specifically, the brittle phase W2C is not widely regarded as the main wear-resistant phase, but we were surprised to find that careful adjustment of its rigid structure can yield satisfactory results. Experimental results and first-principles simulations have indicated that the friction coefficient and weight loss of a coating with a suitable distribution of W2C are only half of those of a traditional Ni-based WC coating (about five times higher than those of the substrate), which can mainly be attributed to the excellent thermal expansion coefficient and hardness of the W2C phase. As we expected, the surface morphology of the material after wear revealed that the suitable W2C layer has a well-defined friction morphology. We hope to provide new ideas for the study of Ni-based WC coatings in shield machine cutterheads.

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Effect of h-BN addition on the microstructure characteristics, residual stress and tribological behavior of WC-reinforced Ni-based composite coatings

Cited by 24 publications

References 29 publications

Friction and wear behaviour of BN(h) and Ag incorporated nickel phosphorous coatings under dry reciprocating sliding conditions

Friction and wear behaviour of BN(h) and Ag incorporated nickel phosphorous coatings under dry reciprocating sliding conditions

Microstructure and Tribo-Behavior of WC–Cr3C2–Ni Coatings by Laser Cladding and HVAF Sprayed: A Comparative Assessment

Preparation of high wear resistance nickel based WC coating by carefully adjusting interface structure

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