Preparation of Metal Coatings on Steel Balls Using Mechanical Coating Technique and Its Process Analysis

Líu, Hao; Yoshida, Hiroyuki; Itoi, Takaomi; Lu, Yun

doi:10.3390/coatings7040053

Cited by 4 publications

(3 citation statements)

References 25 publications

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“…On the other hand, due to the increased impacts frequency of the milling balls in the same time period, more powder particles began to move and adhere to the surface of the milling balls under the impact of the milling balls, accelerating the formation of the coatings. This suggests that a higher revolution speed can accelerate the coating of Ni powder particles on the surface of milling balls, which is consistent with the results of other studies [16,17].…”

Section: Influence Of the Milling Time And The Rotation Speedsupporting

confidence: 92%

Fabrication of Nickel Coatings on Zirconia Balls by Mechanical Ball Milling and the Process Analysis

Chen

et al. 2022

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The Ni coatings were prepared from nickel metal powder and zirconia ceramic balls by mechanical coating technique. The relationship between rotation speed and coatings thickness was studied, the thickness of the coatings was characterized by the weight increase of the zirconia balls after mechanical coating. The composition and microstructure of the coatings with maximum thickness were analyzed by scanning electron microscope (SEM), energy dispersive spectroscopy (EDS), and X-ray Diffraction (XRD). The results revealed that the formation of coatings consists of thickening from the cold welding between Ni particles and the thinning from the exfoliation of coatings work hardening. The thickness of the coatings reaches the maximum when the above two process progress are close to each other. The results proved that higher speed was favor of the coatings formation, the maximum thickness was obtained at the 15 h for rotation speed of 240 rpm, and microscopic images show that the average thickness was about 20 μm.

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Section: Influence Of the Milling Time And The Rotation Speedsupporting

confidence: 92%

Fabrication of Nickel Coatings on Zirconia Balls by Mechanical Ball Milling and the Process Analysis

Chen

et al. 2022

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“…For the past decades, material science has emerged as one of the major scientific fields aiming at the improvement of the physical and chemical properties of materials, taking their projected purpose into consideration. The stainless steel (SS) family represents one of the most utilized alloys, being used in a wide range of applications, such as cutting tools, convenient support in biomedicine, rotor blades of gas turbines, aircraft parts, automobiles, pipelines, and naval vessels [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. The selection of the specific SS to be used in a certain application is done considering the economic aspects as well as its physical and chemical properties.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of the Corrosion Resistance of 304 Stainless Steel by Cr–N and Cr(N,O) Coatings

et al. 2018

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Chromium nitride and oxynitride coatings were deposited as monolayers ((Cr-N), Cr(N,O)) and bilayers (Cr-N/Cr(N,O), Cr(N,O)/Cr-N) on 304 steel substrates by reactive cathodic arc method. The coatings were characterised by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectrometry (EDS), surface profilometry, and scratch tester. The anticorrosive properties of the coatings were assessed by electrochemical tests in 0.10 M NaCl + 1.96 M H 2 O 2 , carried out at 24 • C. Cr 2 N, CrN, and Cr(N,O) phases were identified in the coatings by grazing incidence X-ray diffraction (GI-XRD) measurements. The measured adhesion values ranged from 19 N to 35 N, the highest value being obtained for the bilayer with Cr(N,O) on top. Electrochemical tests showed that Cr(N,O) presence in both mono-and bilayered coatings determined the lowest damage in corrosive solution, as compared to the Cr-N coatings. This improvement was ascribed to the more compact structure, lower coatings porosity, and smoother surface.

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“…As a new film-and coating-preparation method, mechanical coating technology is widely used to prepare various coatings, such as metal coating [2,3], amorphous composite metal coating and photocatalytic coating [4 -6]. Consequently, the preparation of TiO2 photocatalytic film by mechanical ball milling has become a hot topic.…”

Section: Introduction mentioning

confidence: 99%

The Effects of the Content of NiO on the Microstructure and Photocatalytic Activity of the NiO/TiO2 Composite Film

Zhang¹,

Tang²,

Chen³

et al. 2018

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The NiO/TiO2 composite films with the NiO content of 3 %, 5 %, 10 %, 13 %, 15 % and 20 % were prepared by mechanical coating technology and subsequent oxidation process. The composition and microstructure of the films were analyzed by X-ray Diffraction (XRD), scanning electron microscope (SEM), and energy dispersive spectroscopy (EDS). The photocatalytic activity was evaluated and the effects of the content of NiO on microstructure and photocatalytic activity of the films were studied. The results show that NiO particles are dispersed in the Ti coatings, and the NiO concentration in the inner layer of the coatings is higher than in the outer layer. With the addition of NiO in the NiO/Ti coating, the ductility is deteriorated and the thickness is reduced of the NiO/Ti coatings. The films with NiO/TiO2/Ti composite microstructure are obtained by the oxidation of NiO/Ti coatings. Photocatalytic efficiency of the films is obviously enhanced with the help of the p-n junction heterostructure in the NiO/TiO2 films. The optimum content of NiO is about 13 %, and the degradation rate of methyl orange solution reaches the maximum value of 88.44 %.

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Preparation of Metal Coatings on Steel Balls Using Mechanical Coating Technique and Its Process Analysis

Cited by 4 publications

References 25 publications

Fabrication of Nickel Coatings on Zirconia Balls by Mechanical Ball Milling and the Process Analysis

Fabrication of Nickel Coatings on Zirconia Balls by Mechanical Ball Milling and the Process Analysis

Enhancement of the Corrosion Resistance of 304 Stainless Steel by Cr–N and Cr(N,O) Coatings

The Effects of the Content of NiO on the Microstructure and Photocatalytic Activity of the NiO/TiO2 Composite Film

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