Cold gas dynamic spraying of WC–Ni cemented carbide coatings

D, Lioma; Sacks, Natasha; Botef, Ionel

doi:10.1016/j.ijrmhm.2014.08.017

Cited by 45 publications

(22 citation statements)

References 30 publications

(71 reference statements)

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“…The particle retains the pseudo-deformability when the following particles impact on it, permitting thick nanocrystalline WC-12Co coatings to be fabricated. Research by Lioma et al 252 WC-12Co-xNi also indicated that the porous structure favors particle deposition. However, Yandouzi et al 156 deposited both nano-sized and microcrystalline WC-Co coatings, and the nanostructured coating showed higher porosity and the lower hardness due to lack of plastic deformation, as in nanocrystalline Al coatings.…”

Section: Nanostructured Metal-ceramic Composite Coatingsmentioning

confidence: 94%

A Review of Advanced Composite and Nanostructured Coatings by Solid-State Cold Spraying Process

Assadi

Gaertner

et al. 2018

Critical Reviews in Solid State and Materials Sciences

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Cold spraying (CS) has been widely explored over the last decade due to its low process temperature and limited thermal effect on spray materials. As a solid-state process, the inherent deficiencies of traditional thermal spraying such as oxidation, decomposition and grain growth are avoided. This article summarizes the research work on the fabrication of composites and nanostructured coatings by the promising CS process. After a brief introduction to CS and its deposition mechanisms, the preparation methods of spray powders are classified. Different methods are appropriate for particles of various properties, and the tendency is to design composite powders by combined methods in order to create coatings with specified properties. Then the co-deposition mechanism of composite particles as well as research findings on metal-metal, metal-ceramic and metal-intermetallic composite coatings are reviewed concerning the deposition characteristics, microstructure and its relation to properties. Moreover, CS has been used to deposit a variety of nanostructured materials, including metals, metal-ceramic composites, and even ceramics, retaining their nanocrystalline nature in the coating without grain growth or phase transformation. Finally, the potential applications of CS and issues to be addressed in coating deposition are discussed.

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Section: Nanostructured Metal-ceramic Composite Coatingsmentioning

confidence: 94%

A Review of Advanced Composite and Nanostructured Coatings by Solid-State Cold Spraying Process

Assadi

Gaertner

et al. 2018

Critical Reviews in Solid State and Materials Sciences

View full text Add to dashboard Cite

show abstract

“…The loss in ductility of particles through work hardening and high velocity impact may lead to formation of hard and brittle coatings which are also susceptible to cracking [132,134]. Consequently, the cold spray process is not ideally suited for deposition of carbide-based hard coatings that are relevant to dust free brake discs, although studies have reported efforts in this direction with promising results [135,136].…”

Section: Cold Gas Dynamic Spray (Cgds)mentioning

confidence: 99%

Coatings for Automotive Gray Cast Iron Brake Discs: A Review

Aranke

Algenaid

Awe³

et al. 2019

Coatings

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Gray cast iron (GCI) is a popular automotive brake disc material by virtue of its high melting point as well as excellent heat storage and damping capability. GCI is also attractive because of its good castability and machinability, combined with its cost-effectiveness. Although several lightweight alloys have been explored as alternatives in an attempt to achieve weight reduction, their widespread use has been limited by low melting point and high inherent costs. Therefore, GCI is still the preferred material for brake discs due to its robust performance. However, poor corrosion resistance and excessive wear of brake disc material during service continue to be areas of concern, with the latter leading to brake emissions in the form of dust and particulate matter that have adverse effects on human health. With the exhaust emission norms becoming increasingly stringent, it is important to address the problem of brake disc wear without compromising the braking performance of the material. Surface treatment of GCI brake discs in the form of a suitable coating represents a promising solution to this problem. This paper reviews the different coating technologies and materials that have been traditionally used and examines the prospects of some emergent thermal spray technologies, along with the industrial implications of adopting them for brake disc applications.

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“…The porosity in WC/Ni and Ni-54WC/Ni coatings with the initial 76 vol.% WC was due to cracking and debonding of splats. 26,27) showed that the mean free path (MFP) between reinforcing particles directly influenced the mechanical properties of MMCs. In Fig.…”

Section: Ni-wc/ni Coatingsmentioning

confidence: 99%

Cold Spray Deposition of Ni and WC-Reinforced Ni Matrix Composite Coatings

Alidokht

Yue

et al. 2017

J Therm Spray Tech

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Ni-WC composites are ideal protective coatings against wear and are often fabricated using laser cladding and thermal spray processes, but the high temperatures of these processes result in decarburization, which deteriorates the performance of the coating. Cold spray has the potential to deposit Ni-WC composite coatings and retain the composition of the initial WC feedstock. However, the insignificant plastic deformation of hard WC particles makes it difficult to build up a high WC content coating by cold spray. By using three different WC powder sizes, the effect of feedstock powder size on WC retention was tested. To improve WC retention, a WC/Ni composite powder in mixture with Ni was also sprayed. Microstructural characterization, including the deformed structure of Ni splats, retention, distribution, and fragmentation of WC, was performed by scanning electron microscopy. An improvement in WC retention was achieved using finer WC particles. Significant improvement in WC particles retention was achieved using WC/Ni composite powder, with the WC content in the coating being close to that of the feedstock.

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Cold gas dynamic spraying of WC–Ni cemented carbide coatings

Cited by 45 publications

References 30 publications

A Review of Advanced Composite and Nanostructured Coatings by Solid-State Cold Spraying Process

A Review of Advanced Composite and Nanostructured Coatings by Solid-State Cold Spraying Process

Coatings for Automotive Gray Cast Iron Brake Discs: A Review

Cold Spray Deposition of Ni and WC-Reinforced Ni Matrix Composite Coatings

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