Microstructure, wear and corrosion behaviors of plasma sprayed NiCrBSi-Zr coating

Xiao, Jinkun; Wu, Yuqing; Zhang, Wei; Chen, Juan; Wei, Xinlong; Zhang, Chao

doi:10.1016/j.surfcoat.2018.12.114

Cited by 48 publications

(13 citation statements)

References 39 publications

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“…The pores at the coating/substrate interface are produced by the sandblasting and the stacking of in-flight particles [32]. Therefore, pores are widely found in the as-sprayed NiCrBSi coating [33][34][35]. The remelting process is frequently employed to improve the properties of the as-sprayed NiCrBSi coatings.…”

Section: Analysis Of the Pores At The Coating/substrate Interfacesmentioning

confidence: 99%

A New Method for Evaluating the Bond Strength of Plasma-Sprayed NiCrBSi Coatings

Chen

Liu

Xuan

et al. 2022

Metals

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The bond strength is a critical consideration for the plasma-sprayed NiCrBSi coatings. However, the conventional methods for testing the bond strength of NiCrBSi coatings always cost time and money. If there is a simple method that could predict the bond strength of the prepared NiCrBSi coatings without destroying the coatings, it would be significantly beneficial for industrial applications. In this work, a new method was proposed based on the total areas of the interfacial pores for the NiCrBSi coatings. The NiCrBSi coating was prepared by plasma spraying technology and the as-sprayed coating was subsequently remelted by plasma arc using the powers of 20 kW, 25 kW, and 30 kW, respectively. The interfacial microstructures, the size distributions and total areas of the interfacial pores, interfacial hardness, and bond strength of all prepared coating samples were investigated. After remelting, the number and the total area of interfacial pores decrease with increasing the remelting power. Correspondingly, the interfacial hardness and bond strength of coatings increase with increasing the remelting power The bond strength of coatings basically has a linear relationship with the total area of interfacial pores. The built relationship may be used to predict the bond strength of NiCrBSi coatings.

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Section: Analysis Of the Pores At The Coating/substrate Interfacesmentioning

confidence: 99%

A New Method for Evaluating the Bond Strength of Plasma-Sprayed NiCrBSi Coatings

Chen

Liu

Xuan

et al. 2022

Metals

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“…The coating structure is formed from the continuous deposition of molten particles that will accumulate a coating characterized by flattened particles and lamellar microstructure [6]. Among the various existing processes, thermal spraying is the one with the most numerous configurations, both in terms of energy sources (plasma, flame, electric arc) and materials used (metals, ceramics, polymers, composites, etc.)…”

Section: Ii1 Thermal Spraymentioning

confidence: 99%

Influence of cutting parameters on surface integrity and machining forces in top milling of metallic spraying metal coatings

Oliveira

Hamano

Chuvas

et al. 2022

ITEGAM

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This work aims to evaluate the behavior of coatings applied by electric arc thermal spraying on a low carbon steel substrate when subjected to a milling process under different cutting conditions (cutting speed and tool tip radius). It was observed how these cutting conditions influenced the surface integrity of the machined part (roughness) and the machining forces generated during the process. An evaluation of the types and levels of tool wear in the milling operations was carried out. To obtain the results, samples of ASTM-A36 steel sheets thermally sprayed with and without sealant were milled with cutting speeds of 50 m/min and 84 m/min, and inserts with tip radius of 0.4 mm and 0.8 mm. The cutting parameters used were based on previous work and information from the cutting tool manufacturer. The present work indentifies that cutting speed set to 50m/min led to lower machining forces and better tool wear performance. The results obtained indicated that the tool with the smallest tip radius provided better cutting conditions, in the coating without application of sealant. The tool with the largest tip radius presented lower machining forces for the application of sealant. There were no expressive differences in the finish of the machined surfaces, but the experimental values obtained for the average roughness (1µm to 1,79 µm) remained in accordance with the limits indicated in the literature. The predominant tool wear was the plastic deformation in the tip of the inserts and crater wear located on rake face.

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“…Therefore, how to ameliorate the wear resistance of mechanical parts is an urgent problem. Ceramic coatings have been extensively studied as wearresistant layers, such as WC-WCoB, WC-Cr 3 C 2 -Ni, NiCrBSi-Zr and YSZ coatings [3][4][5][6], which greatly ameliorated the friction performance of the metallic part. However, the wear resistance of these coatings is severely challenged by adverse industrial conditions.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Wear Behaviors of Plasma-Sprayed MoAlB Ceramic Coating

Sun

et al. 2021

Coatings

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MoAlB ceramic coatings were prepared on a 316 steel surface by atmospheric plasma spraying with different arc power levels. The phase composition, microstructure and wear resistance of coatings against GCr15 and Si3N4 counterparts were studied. The MoAlB ceramic decomposed and was oxidized to form MoB and Al2O3 during plasma spraying. With the increase of the arc power, MoAlB experienced more decomposition, but the coatings became denser. When the arc power increased from 30 to 36 kW, the wear rates of coatings against GCr15 and Si3N4 balls reduced by 91% and 78%, respectively. The characterization of wear tracks shows that when against GCr15 counterparts, the main wear mechanisms are abrasive and adhesive wear, and when against Si3N4 counterparts, fatigue and abrasive wear are dominant. The refinement of wear resistance by increasing arc power can be attributed to the improvement of density and adhesive strength among splats.

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Microstructure, wear and corrosion behaviors of plasma sprayed NiCrBSi-Zr coating

Cited by 48 publications

References 39 publications

A New Method for Evaluating the Bond Strength of Plasma-Sprayed NiCrBSi Coatings

A New Method for Evaluating the Bond Strength of Plasma-Sprayed NiCrBSi Coatings

Influence of cutting parameters on surface integrity and machining forces in top milling of metallic spraying metal coatings

Microstructure and Wear Behaviors of Plasma-Sprayed MoAlB Ceramic Coating

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