Fabrication of Superhydrophobic Surfaces of Titanium Dioxide and Nickel through Electrochemical Deposition on Stainless Steel Substrate

Binary microstructures at both micro- and nano-scale are constructed by the electrochemical depositing Ni and TiO2 on the stainless steel surface. Superhydrophobicity is achieved with a water contact angle greater than 150° after modifying the textured surface with fluoroalkylsilane (FAS-17, CF3(CF2)7CH2CH2Si(OCH3)3). The morphology of the Ni-TiO2 compound coating is studied by scanning electron microscopy.

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Effects of WC Particle Types on the Microstructures and Properties of WC-Reinforced Ni60 Composite Coatings Produced by Laser Cladding

Metals ◽

10.3390/met9050583 ◽

2019 ◽

Vol 9 (5) ◽

pp. 583 ◽

Cited By ~ 5

Author(s):

Pengxian Zhang ◽

Yibin Pang ◽

Mingwei Yu

Keyword(s):

Stainless Steel ◽

Uniform Distribution ◽

Laser Cladding ◽

Steel Surface ◽

Stainless Steel Substrate ◽

Steel Substrate ◽

Composite Coatings ◽

304 Stainless Steel ◽

Stainless Steel Surface ◽

Different Types

WC-reinforced Ni60 composite coatings with different types of WC particles were prepared on 304 stainless steel surface by laser cladding. The influences of spherical WC, shaped WC, and flocculent WC on the microstructures and properties of composite coatings were investigated. The results showed that three types of WC particles distribute differently in the cladding coatings, with spherical WC particles stacking at the bottom, shaped WC aggregating at middle and lower parts, with flocculent WC particles dispersing homogeneously. The hardnesses, wear resistances, corrosion resistances, and thermal shock resistances of the coatings are significantly improved compared with the stainless steel substrate, regardless of the type of WC that is added, and especially with regard to the microhardness of the cladding coating; the addition of spherical or shaped WC particles can be up to 2000 HV0.05 in some areas. Flocculent WC, shaped WC, and spherical WC demonstrate large to small improvements in that order. From the results mentioned above, the addition of flocculent WC can produce a cladding coating with a uniform distribution of WC that is of higher quality compared with those from spherical WC and shaped WC.

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Comparison studies of the protective properties of silane/polyrhodanine and polyrhodanine/silane bilayer coatings applied on stainless steel

Anti-Corrosion Methods and Materials ◽

10.1108/acmm-07-2017-1814 ◽

2018 ◽

Vol 65 (2) ◽

pp. 190-196 ◽

Cited By ~ 1

Author(s):

Edyta Owczarek

Keyword(s):

Stainless Steel ◽

Photoelectron Spectroscopy ◽

Steel Surface ◽

Steel Substrate ◽

Dip Coating ◽

Stainless Steel Surface ◽

Protective Properties ◽

Content Type ◽

Anticorrosion Properties ◽

Bilayer Coatings

Purpose The purpose of this paper is to evaluate and compare the protective, anticorrosion properties of silane- and polyrhodanine-based bilayer coatings pRh/IBTES and IBTES/pRh on an X20Cr13 stainless steel substrate. Design/methodology/approach IBTES/pRh and pRh/IBTES have been coated using the dip-coating method and the cyclic voltammetry technique. The electrochemical measurements have been used to assess the anticorrosion properties of the resulting bilayer coatings. Morphological and chemical characterizations have been performed using scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). Findings The results clearly show that the combination of both the deposits of polyrhodanine and silane yields a more protective structure that affords better protection against corrosion with time. The best barrier properties are achieved by the substrates coated with polyrhodanine film upon which silane is subsequently adsorbed – the pRh/IBTES bilayer coating. Originality/value The paper reveals that the procedure of modification of silane films with polyrhodanine had a marked effect on the anti-corrosive performance of the obtained two types of bilayers coatings (pRh/IBTES, IBTES/pRh) applied on a stainless steel surface. The coating where polyrhodanine was first electrodeposited on the steel surface and then the silane layer adsorbed (pRh/IBTES) achieved the best protective properties.

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Scanning Electron Microscopic Examination of Yersinia enterocolitica Attached to Stainless Steel at Selected Temperatures and pH values1

Journal of Food Protection ◽

10.4315/0362-028x-51.6.445 ◽

1988 ◽

Vol 51 (6) ◽

pp. 445-448 ◽

Cited By ~ 33

Author(s):

PAULA J. HERALD ◽

EDMUND A. ZOTTOLA

Keyword(s):

Stainless Steel ◽

Yersinia Enterocolitica ◽

Steel Surface ◽

Electron Microscopic Examination ◽

Growth Conditions ◽

Stainless Steel Surface ◽

Electron Microscopic ◽

Scanning Electron Microscopic ◽

Steel Surfaces ◽

Scanning Electron

Attachment of Yersinia enterocolitica to stainless steel surfaces at 35, 21, and 10°C was investigated using scanning electron microscopy (SEM). Cells adhered at all three temperatures, but, in general, the greatest number of adhered cells were observed at pH 8 and 21°C. Multi-flagellated cells were noted under these growth conditions. When grown at pH 9.5 and 21°C, fibrils were observed between cells and extending to the stainless steel surface. Fewer cells with flagella were seen at this pH. Adherence may be related to the flagella and any exopolymer surrounding the cells.

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Synthesis, morpho-structural characterization and electrophoretic deposition of aegirine obtained by the hydrothermal method in the Si-Fe-Na-H2O system

Facta universitatis - series Physics Chemistry and Technology ◽

10.2298/fupct1501051r ◽

2015 ◽

Vol 13 (1) ◽

pp. 51-58

Author(s):

Marjan Randjelovic

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Stainless Steel ◽

Electrophoretic Deposition ◽

Stainless Steel Substrate ◽

Steel Substrate ◽

Hydrothermal Process ◽

Efficient Procedure ◽

Selection Of ◽

Scanning Electron

Aegirine belongs to a group of minerals known as inosilicates. In this study, a fast and efficient procedure is proposed for the synthesis of aegirine nanoparticles by means of the hydrothermal process, starting from a suspension of simple hydroxide/silicate precursors. Structural properties of the obtained mineral were assessed by the XRD technique. It was found that aegirine was the only crystalline phase present. The expected needle-like morphology, characteristic of inosilicates, was confirmed by scanning electron microscopy (SEM). Through an appropriate selection of solvents and dispersants, an electrophoretic deposition and immobilization of aegirine on stainless steel was achieved. Native layers of aegirine displayed a very smooth morphology, while after calcination, a detachment of the layers from the stainless steel substrate and the appearance of cracks in the coating was observed. This phenomenon could be prevented by the use of appropriate additives.

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Fabrication of Superhydrophobic Surface of TiO2 through Sol-Gel Process on Stainless Steel Substrate

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.512-515.1032 ◽

2012 ◽

Vol 512-515 ◽

pp. 1032-1035 ◽

Cited By ~ 1

Author(s):

Ya Wei Hu ◽

Hui Rong He ◽

Yang Min Ma

Keyword(s):

Stainless Steel ◽

Steel Substrate ◽

Sol Gel ◽

Dip Coating ◽

Contact Angles ◽

Tio2 Coating ◽

Crystallographic Structure ◽

Stainless Steel Surface ◽

Water Contact ◽

Sol Gel Process

Nano-structured TiO2 coating was constructed through sol-gel process and dip-coating method on the stainless steel surface using tetra-n-butyl titanate as precursor. The phase and the crystallographic structure of the TiO2 coating were characterized by an X-ray diffractometer (XRD), and the surface topography and structures of the TiO2 coating were characterized by a scanning electron microscope (SEM). The superhydrophobic property of the TiO2 coating modified with the fluoroalkylsilane (FAS, CF3(CF2)7CH2CH2Si(OCH3)3) was characterized by the water contact angles. It was observed that the TiO2 coating showed superhydrophobicity with water contact angle 155.3° after modifying with FAS, and the superhydrophobicity was corrosion-resistance.

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Fabrication of Super-Hydrophobic Surface on Stainless Steel Using Chemical Etching Method

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.562-565.33 ◽

2013 ◽

Vol 562-565 ◽

pp. 33-38 ◽

Cited By ~ 5

Author(s):

Hai Feng Zhang ◽

Xiao Wei Liu ◽

Min Zhao ◽

Dong Bo Wang ◽

Chang Zhi Shi

Keyword(s):

Stainless Steel ◽

Superhydrophobic Surface ◽

Chemical Etching ◽

Steel Surface ◽

Hydrophobic Surface ◽

Solution Concentration ◽

Etching Time ◽

Stainless Steel Surface ◽

Water Contact ◽

Steel Disc

Superhydrophobic surface have many applications such as drag reduction in the micro-electromechanical systems. A novel method of fabricating superhydrophobic surface is proposed using the simple wet chemical etching in this paper. Firstly, the surface of steel disc is polished by abrasive paper and then treated with chemical etching. Secondly, the surface of steel is modified with 1H,1H,2H,2H-Perfluorooctyltrimethoxysilane. The superhydrophobic surface was obtained on the stainless steel surface. Finally, the effects of the etching time and etching solution concentration were analyzed to the superhydrophobic performance. The experimentation results show that superhydrophobic performance is the best when the HCl concentration is 2mol/L, the etching time is 20 minute respectively. The water contact angle (CA) of the rotor surface is 152°. The water droplets are hardly able to stick to the steel surface．

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Erosion Behavior of Al-12Si-2Mg-15Cu Alloy against 304 Stainless Steel Surface

Materials Science Forum ◽

10.4028/www.scientific.net/msf.788.171 ◽

2014 ◽

Vol 788 ◽

pp. 171-175

Author(s):

Xiao Hua Zhang ◽

Si Rong Yu ◽

Jun Xu

Keyword(s):

Stainless Steel ◽

Erosion Rate ◽

Steel Surface ◽

Diffusion Rate ◽

Steel Substrate ◽

304 Stainless Steel ◽

Effect Of Temperature ◽

Stainless Steel Surface ◽

Erosion Behavior ◽

Potential Applications

The compatibility between phase change alloys and container steels at the high temperature is limiting their potential applications in energy storage systems. In this paper, we investigated the erosion behavior of Al-12Si-2Mg-15Cu alloy against 304 stainless steel surface. The effect of temperature and immersion time on the erosion behavior was studied. The erosion rate and erosion thickness increased with the temperature increasing. With the increase of time, the erosion layer thickness increased, but the erosion rate decreased. The mechanisms which accounted for the formation and growth of diffusion layer were studied. The results show that the corrosion is mainly due to the diffusion of Al. The presence of Si element resists the growth of Fe-Al compounds and make erosion layer brittle. Ni-compounds can decrease the diffusion rate of Al atoms. Furthermore, the erosion layer adjacent to the steel substrate is brittle and its micro-hardness is higher.

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Fibrinogen adsorption and platelet adhesion to metal and carbon coatings

Thrombosis and Haemostasis ◽

10.1160/th04-03-0171 ◽

2004 ◽

Vol 92 (11) ◽

pp. 1032-1039 ◽

Cited By ~ 28

Author(s):

Matteo Santin ◽

Stephen Denyer ◽

Andrew Lloyd ◽

Dennis G.Teer ◽

Sue Field ◽

...

Keyword(s):

Stainless Steel ◽

Platelet Adhesion ◽

Vapour Deposition ◽

Stainless Steel Substrate ◽

Steel Substrate ◽

Stainless Steel Surface ◽

Carbon Coatings ◽

Metal Materials ◽

Isotropic Graphite ◽

Fibrinogen Adsorption

SummaryIn order to study the haemocompatibility of metal and carbon coatings, fibrinogen adsorption and platelet adhesion to various coatings have been investigated.Two metallic coatings titanium and zirconium, and two carbon coatings isotropic diamondlike and isotropic graphite-like coatings, were prepared by plasma vapour deposition onto stainless steel substrate. It has been shown that the adsorption of fibrinogen to metal and carbon coatings and its post-adsorptive transition are dependent on both the material properties and the fibrinogen environment. The adsorption of fibrinogen from human plasma on titanium and zirconium coatings is similar to that on uncoated stainless steel surface. Both carbon coatings adsorb much greater amount of fibrinogen from plasma, and fibrinogen retention by carbon surfaces is also greater than by metal surfaces. Increased numbers of adhered platelets have been found on both carbon coatings in comparison to the metal materials, although this does not correlate with the amount of adsorbed fibrinogen.

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Controlling the Leidenfrost Temperature Through Laser-Assisted Surface Micro/Nano Texturing

Volume 2: Heat Transfer Enhancement for Practical Applications; Heat and Mass Transfer in Fire and Combustion; Heat Transfer in Multiphase Systems; Heat and Mass Transfer in Biotechnology ◽

10.1115/ht2013-17771 ◽

2013 ◽

Author(s):

Corey Kruse ◽

Troy Anderson ◽

Dennis Alexander ◽

George Gogos ◽

Sidy Ndao

Keyword(s):

Stainless Steel ◽

Smooth Surface ◽

Steel Surface ◽

304 Stainless Steel ◽

Stainless Steel Surface ◽

Textured Surface ◽

Textured Surfaces ◽

Transfer Coefficients ◽

Surface Features ◽

Leidenfrost Temperature

In the present work, the effect of surface features and wettability on the Leidenfrost temperature are experimentally investigated. The surface features were fabricated on a 304 stainless steel surface using a femtosecond laser. This technique allows for a wide variety of surface microstructures (spikes, mounds, holes, and pyramids) to be created, ranging in size, shape, and spacing. Changing the fluence and shots of the laser produce different micro/nano textured surfaces. A smooth surface sample was fabricated as a reference surface with a measured Leidenfrost temperature as a benchmark. The droplet lifetime experimental method was employed to determine the Leidenfrost temperature for both the smooth and the textured surfaces. A precision dropper was used to control the droplet size to 4.2 microliters (diameter of 2.0mm) while surface temperatures were measured by means of an embedded thermocouple. In comparison to the smooth stainless steel surface, a shift in the Leidenfrost temperature, as high as 55 °C, was observed with the textured surface. The textured surface hasa high emissivity, compared to the smooth surface. As a result, in addition to the shift in the Leidenfrost temperature, significant enhancement of the film boiling heat transfer coefficients were also observed.

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