Electrophoretic deposition of pure MoS2 dry film lubricant coatings

Panitz, J. A.; Dugger, M.T.; Peebles, D.E.; Tallant, D. R.; Hills, C. R.

doi:10.1116/1.578570

Cited by 8 publications

(6 citation statements)

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“…In addition, as postulated by Ciou et al [21], at considerably high voltage the EPD rate is accelerated by the diffusioninduced accumulation of particles, and hence, higher solid concentration in the vicinity of the working electrode. On the other hand, the significant increase of the deposition rate at 20 V may indicate that a certain level of field strength is required to overcome interparticle forces in order to form a Ti 3 SiC 2 deposit on the fiber [22]. The reduced deposition rate at longer time periods is attributed to the high resistivity of the growing layer which causes a significant drop of the electric field in the suspension [9,10].…”

Section: Resultsmentioning

confidence: 95%

Polymer derived ceramics reinforced with Ti3SiC2 coated SiC fibers: A feasibility study

et al. 2015

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Section: Resultsmentioning

confidence: 95%

Polymer derived ceramics reinforced with Ti3SiC2 coated SiC fibers: A feasibility study

et al. 2015

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“…The stainless steel 316L substrates were coated with MoS 2 particles by means of electrophoretic deposition (EPD). The methodology developed by Panitz et al [20] was followed, while solution composition and current density were adjusted to obtain a homogeneous coating on our samples. Here, we present the parameters that resulted in the best coverage, as our main goal was to obtain a MoS 2 coating in order to compare the corrosion behavior with our composite coating.…”

Section: Electrophoretic Deposition Of a Mos 2 Coatingmentioning

confidence: 99%

“…As properties of composite materials are not a weighted average of the properties of the matrix and the particles, analyzing their properties may not be straightforward. For the aim of analyzing the corrosion behavior of the Cu-MoS 2 composite coating, following the work carried out by Panitz et al [20], we produced a plain MoS 2 particle coating by means of electrophoretic deposition (EPD). Consequently, we could evaluate the corrosion behavior of a sample coated only with MoS 2 particles, a sample coated only with copper, and finally we compared the behavior of the Cu or MoS 2 coatings to the Cu-MoS 2 composite coating.…”

Section: Introductionmentioning

confidence: 99%

Cu–MoS2 Superhydrophobic Coating by Composite Electrodeposition

Prado

Virtanen

2020

Coatings

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In this work, a superhydrophobic coating was developed by composite electrodeposition of MoS 2 particles in a copper matrix. AISI 316L stainless steel and N80 carbon steel, with a thin electrodeposited Ni layer to improve adherence of the coating, were used as substrates. Different operational parameters of electrodeposition were studied in order to produce the highest possible contact angle. We demonstrate that, using this method, a coating with a hierarchical structure with feature dimensions in the range of µm to nm is obtained, with advancing contact angle values up to 158.2 • and a contact angle hysteresis equal to 1.8 • . To study the coating composition energy dispersive X-ray, X-ray photoelectron spectroscopy and time-of-flight secondary ion mass spectrometry were performed. Moreover, potentiodynamic polarizations were performed in H 2 SO 4 , NaCl and NaOH solutions to study the corrosion behavior of the coating. As a control, a sample coated only with MoS 2 particles by means of electrophoretic deposition was produced. The results show that the composite coating can be used in applications where copper is used for corrosion protection, with the addition of the desirable effects of its superhydrophobicity. known as the "lotus effect" [5]. In this case, both θ A and θ R will have a high value and the contact angle hysteresis will be low. If the sample presents a high θ A but the water droplet is in a Wenzel state (Figure 1b), in full contact with the surface, θ R will be very low, and the droplet will not roll freely on the surface. Despite the high θ A , this is not considered a superhydrophobic surface. This will be indicated by a low θ R and, consequently, a high contact angle hysteresis.

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“…But EPD has been proven to be a very versatile coating method for a large variety of materials [131,132]. There a numerous publications on all kinds of EPD coatings (aqueous and nonaqueous systems) like hydroxylapatite layers [133][134][135][136], dense titania layers [47,137], zirconia layers [138], silica sol-gel deposition [139], SiC oxidation protection layers [140], electrolyte layers for SOFC [141][142][143][144][145][146], MgO coatings [147,148], 0.1-300 µm thick CeO 2 films [149], CdS/Cu 2 S and TiO 2 for solar cells [150,151], phosphors [152,153], PZT layers [154], BaTiO 3 films 1-5 µm thick [155], quantum sized nano-ZnO films [156], up to 4 mm thick Ni-alumina cermet layers [157], abrasion resistant WC-Co layers [158], diamond films on silicon substrates [159][160][161], MoS 2 lubricant films [162], ordered gold colloid monolayers [27,163], and alumina thermal insulations films [164].…”

Section: Deposition Of Coatingsmentioning

confidence: 99%

Preparation of High-Purity Glasses and Advanced Ceramics Via EPD of Nanopowders

Clasen

2011

Nanostructure Science and Technology

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For the preparation of advanced materials via a powder technological route the shaping process is most important after the synthesis of the powder. Therefore high production rates and the formation of a homogeneous compact are generally desirable. Furthermore, a high green density is necessary to reduce shrinkage during drying and sintering. This is of special importance for near net shaping or microstructuring. For coatings an even thickness with a good coverage of the edges is an additional specification that has to be fulfilled. The typical shaping processes for fine or advanced ceramics with particle sizes in the µm or even sub-µm region are slip casting, forming of high-viscous masses, and dry pressing. The decreasing of particles size leads to the area of nanoparticles with sizes less than 100 nm. These nanopowders show higher sintering activity leading to a decrease of sintering temperature. Thus smaller final grain sizes can be achieved or even quantum size effects can be observed. For glasses new perspectives are opened with nanopowders. Due to the reduction of processing temperatures nanosized glass powders can be completely sintered to transparent glasses via viscous flow below the crystallization temperature. Thus no crucibles are needed any more and high-purity glasses can be prepared. For coatings on substrates with limited temperature stability glazes and enamels can be applied without additional low melting components. Theses fluxes generally reduce the chemical stability of the coating.As these nanopowders tend to aggregate due to the increased influence of van der Waals attraction forces, these nanopowders have to be dispersed perfectly. For that suspensions are most suited and the formation of aerosols (dust of nanopowders) is prevented, which might be hazardous. In electrostatically stabilized suspensions the dispersed particles show a surface charge, which can be directly used for moving this particles in an applied external electric field leading to an electrophoretic deposition (EPD) [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. But it should be kept in mind that the electrostatical as well as

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Electrophoretic deposition of pure MoS2 dry film lubricant coatings

Cited by 8 publications

References 0 publications

Polymer derived ceramics reinforced with Ti3SiC2 coated SiC fibers: A feasibility study

Polymer derived ceramics reinforced with Ti3SiC2 coated SiC fibers: A feasibility study

Cu–MoS2 Superhydrophobic Coating by Composite Electrodeposition

Preparation of High-Purity Glasses and Advanced Ceramics Via EPD of Nanopowders

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