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Technology for the preparation and application of cermet coatings and claddings in thermal power plants

Zongde LIU, Miao LIU, Liping ZHAO

Frontiers in Energy 2011, Volume 5, Issue 3,   Pages 257-262 doi: 10.1007/s11708-010-0129-3

Abstract: Next, the paper summarizes the development of preparation technology for cermets and cermet coatingsand claddings, finally explaining the application and development of submicron-grain cermet coatingsand claddings through reaction synthesis technology.

Keywords： cermets     cermet coatings/claddings     electro-thermal explosion spraying     reaction synthesis    

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Extrapolation reconstruction of wind pressure fields on the claddings of high-rise buildings

Yehua SUN, Guquan SONG, Hui LV

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 3,   Pages 653-666 doi: 10.1007/s11709-018-0503-5

Abstract: Recent research about reconstruction methods mainly used the interpolation reconstruction of the fluctuating wind pressure field on the surface. However, to investigate wind pressure at the edge of the building, the work presented in this paper focuses on the extrapolation reconstruction of wind pressure fields. Here, we propose an improved proper orthogonal decomposition (POD) and Kriging method with a von Kármán correlation function to resolve this issue. The studies show that it works well for not only interpolation reconstruction but also extrapolation reconstruction. The proposed method does require determination of the Hurst exponent and other parameters analysed from the original data. Hence, the fluctuating wind fields have been characterized by the von Kármán correlation function, as an a priori function. Compared with the cubic spline method and different variogram, preliminary results suggest less time consumption and high efficiency in extrapolation reconstruction at the edge.

Keywords： extrapolation reconstruction     proper orthogonal decomposition     Kriging method     von Kármán function     Hurst exponent     rescaled range analysis    

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Effect of electrolyte concentration on the tribological performance of MAO coatings on aluminum alloys

Chao Wang, Jun Chen, Jihua He, Jing Jiang, Qinyong Zhang

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 6,   Pages 1065-1071 doi: 10.1007/s11705-019-1909-x

Abstract: In order to investigate the effect of the electrolyte concentration on the properties of MAO coatingsThe surface morphologies and phase compositions of the coatings produced with different electrolytesThe roughness and thickness of the coatings were measured using a pocket roughness meter and an eddy-currentThe friction coefficient and wear rate of the coatings increased with an increase in the Na SiO andA decrease in the porosity and roughness and an increase in the α-Al O content of the coatings reduced

Keywords： aluminum alloy     micro-arc oxidation     coating     electrolyte concentration     tribological performance    

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Wind tunnel test study on the wind pressure coefficient of claddings of high-rise buildings

Yong QUAN, Yi LIANG, Fei WANG, Ming GU

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 4,   Pages 518-524 doi: 10.1007/s11709-011-0128-4

Abstract: The area-averaged most unfavorable wind pressure coefficients (MUWPCs) on various regions of building surfaces and the influence of the side ratio and the terrain category were studied based on wind tunnel test data of scale models of typical high-rise buildings with rectangular cross-sections. The negative area-averaged MUWPCs in the middle-height edge areas generally increased with an increasing / side ratio. The area-averaged MUWPCs can be well fitted with a function of the average area reduced by the square of the building depth, . In addition, no unique pattern was found for the effect of the terrain category on the MUWPCs.

Keywords： side ratio     area-averaged pressure coefficients     cladding     terrain category    

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Research on a quantificational method for chromatic-light emotions of architectural wall coatings in

Ting WANG, Ma JIAN, Gang LIU, Xiaoxi LIU, Mingyu ZHANG

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 4,   Pages 498-502 doi: 10.1007/s11709-010-0096-0

Abstract: This paper took chromatic-light-induced-emotion towards architectural wall coatings in landscape as the

Keywords： landscape illumination     architectural wall coatings     chromatic-light emotion     quantitative research    

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Development of oxide based diffusion barrier coatings for CFC components applied in modern furnaces

Kirsten BOBZIN, Lidong ZHAO, Thomas SCHLAEFER, Thomas WARDA

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 4,   Pages 392-396 doi: 10.1007/s11465-011-0241-z

Abstract: CFC-carriers for e.g. brazing furnaces, within the frame of this study thermally sprayed diffusion barrier coatingsCoatings of mullite and ZrO2-7%βY2O3 (YSZ) were prepared byThe coatings were investigated in terms of their microstructure and thermal shock behaviour.In order to prove the suitability of the coatings for the application in brazing furnaces, the wettabilityBoth coatings exhibited good thermal shock behaviour and an excellent non-wetting behaviour against the

Keywords： diffusion barrier coatings     carbon fibre reinforced carbon (CFC)     plasma spraying     microstructure     furnace    

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Feasibility study of plasma sprayed Al2O3 coatings as diffusion barrier on CFC

Kirsten BOBZIN, Lidong ZHAO, Nils KOPP, Thomas WARDA

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 4,   Pages 371-375 doi: 10.1007/s11465-012-0339-y

Abstract: Within this study the feasibility of plasma sprayed Al2O3 coatings as diffusionAl2O3 coatings were prepared by air plasma spraying (APS).The coatings were investigated in terms of their microstructure, bonding to CFC substrates and thermalThe coatings had a good bonding and thermal shock behavior at 1060°C.network formed within the coating, showing that the plasma sprayed Al2O3 coatings

Keywords： diffusion barrier coatings     CFC     plasma spraying     microstructure     Al2O3    

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Effects of additive NaI on electrodeposition of Al coatings in AlCl

Tianyu Yao, Haiyan Yang, Kui Wang, Haiyan Jiang, Xiao-Bo Chen, Hezhou Liu, Qudong Wang, Wenjiang Ding

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 1,   Pages 138-147 doi: 10.1007/s11705-020-1935-8

Abstract: Effects of NaI as an additive on electrodeposition of Al coatings in AlCl -NaCl-KCl (80-10-10 wt-%) moltenThe electrodeposition of Al coatings in the AlCl -NaCl-KCl molten salts electrolyte proceeds via three-dimensional

Keywords： NaI     additive     electrodeposition     molten salts     Al coating    

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Preparation and characterization of nanocrystalline ZrO2-7%Y2O3 powders for thermal barrier coatings

Kirsten BOBZIN, Lidong ZHAO, Thomas SCHLAEFER, Thomas WARDA

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 2,   Pages 176-181 doi: 10.1007/s11465-011-0220-4

Abstract: nanocrystalline powders with high levels of crystalline disorders for deposition of thermal barrier coatings

Keywords： nanostrucured powders     yttria stabilized zirconia (YSZ)     high-energy ball milling     thermal barrier coatings    

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Bio-based Waterborne Poly(Vanillin-Butyl Acrylate)/MXene Coatings for Leather with Desired Warmth Retention

Jianzhong Ma,Li Ma,Lei Zhang,Wenbo Zhang,Qianqian Fan,Buxing Han,

Engineering doi: 10.1016/j.eng.2023.06.005

Abstract: The resulting MV not only imparted antibacterial properties to coatings layered on leather, but couldnanocomposite miniemulsion on the leather surface, MXene gradually migrated to the surface of leather coatingsnanosheets increased the air permeability, water vapor permeability, and thermal stability of these coatingsprovides a new insight into the preparation of novel, green, and waterborne bio-based nanocomposite coatings

Keywords： MXene nanosheets     Vanillin     Styrene substitute     Leather coating     Photothermal conversion     Warmth retention     Antibacterial properties    

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Fabrication of superhydrophobic SiO2/PS coatings on wood surface

Zhang Ming and Wang Chengyu

Strategic Study of CAE 2014, Volume 16, Issue 4,   Pages 83-86

Abstract: sol-gel process，which as well as polystyrene was employed in the bionic and stably superhydrophobic coatingsScanning electron microscope (SEM) studies revealed that the composite coatings possess two dimensional

Keywords： superhydrophobic     wood surface     drop-coating method     composite coatings    

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Durability of plasma-sprayed Cr3C2-NiCr coatings under rolling contact conditions

Xiancheng ZHANG, Fuzhen XUAN, Shantung TU, Binshi XU, Yixiong WU

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 1,   Pages 118-135 doi: 10.1007/s11465-011-0127-0

Abstract: paper was to address the rolling contact fatigue (RCF) failure mechanisms of plasma-sprayed Cr3C2-NiCr coatingsThe failure modes of coatings were identified on the basis of wore surface observations of the failedcoatings.When the coatings were subjected to abrasion and spalling type failures, the failure of the coating wasThe coatings were prone to fail in delamination under higher contact stresses.

Keywords： rolling contact fatigue     coating     Weibull distribution     failure mode     mechanism    

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Time of flight improved thermally grown oxide thickness measurement with terahertz spectroscopy

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 4, doi: 10.1007/s11465-022-0705-3

Abstract: spectroscopy technology is commonly used to measure the thickness of ceramic coat in thermal barrier coatings

Keywords： thermal barrier coatings     thermally grown oxide     terahertz spectroscopy     time of flight    

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Influence of surface modified mixed metal oxide nanoparticles on the electrochemical and mechanical properties of polyurethane matrix

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 1,   Pages 1-14 doi: 10.1007/s11705-022-2176-9

Abstract: Newly synthesized functional nanoparticles, 3-amino-1,2,4-triazole (ATA)/SiO2–TiO2 were introduced to the polyurethane (PU) matrix. Electrochemical techniques were used to investigate the barrier properties of the synthesized PU–ATA/SiO2–TiO2 nanocomposite coated steel specimen. In natural seawater, electrochemical impedance spectroscopy experiments indicated outstanding protective behaviour for the PU–ATA/SiO2–TiO2 coated steel. The coating resistance (Rcoat) of PU–ATA/SiO2–TiO2 was determined to be 2956.90 kΩ·cm–2. The Rcoat of the PU–ATA/SiO2–TiO2 nanocomposite coating was found to be over 50% higher than the PU coating. The current measured along the scratched surface of the PU–ATA/SiO2–TiO2 coating was found to be very low (1.65 nA). The enhanced ATA/SiO2–TiO2 nanoparticles inhibited the entry of electrolytes into the coating interface, as revealed by scanning electron microscopy/energy dispersive X-ray spectroscopy and X-ray diffraction analysis of the degradation products. Water contact angle testing validated the hydrophobic nature of the PU–ATA/SiO2–TiO2 coating (θ = 115.4°). When the concentration of ATA/SiO2−TiO2 nanoparticles was 2 wt %, dynamic mechanical analysis revealed better mechanical properties. Therefore, the newly synthesised PU–ATA/SiO2–TiO2 nanocomposite provided excellent barrier and mechanical properties due to the addition of ATA/SiO2–TiO2 nanoparticles to the polyurethane, which inhibited material degradation and aided in the prolongation of the coated steel’s life.

Keywords： SiO2/TiO2 nanoparticle     nanocomposite coatings     dynamic mechanical analysis     electrochemical    

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Effect of TGO on the tensile failure behavior of thermal barrier coatings

Le WANG, Yuelan DI, Ying LIU, Haidou WANG, Haoxing YOU, Tao LIU

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 4,   Pages 452-460 doi: 10.1007/s11465-019-0541-2

Abstract: Thermally grown oxide (TGO) may be generated in thermal barrier coatings (TBCs) after high-temperatureTGO increases the internal stress of the coatings, leading to the spalling of the coatings.

Keywords： thermally grown oxides     thermal barrier coatings     acoustic emission technology     digital image correlation    

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Title Author Date Type Operation

Technology for the preparation and application of cermet coatings and claddings in thermal power plants

Zongde LIU, Miao LIU, Liping ZHAO

Journal Article

Extrapolation reconstruction of wind pressure fields on the claddings of high-rise buildings

Yehua SUN, Guquan SONG, Hui LV

Journal Article

Effect of electrolyte concentration on the tribological performance of MAO coatings on aluminum alloys

Chao Wang, Jun Chen, Jihua He, Jing Jiang, Qinyong Zhang

Journal Article

Wind tunnel test study on the wind pressure coefficient of claddings of high-rise buildings

Yong QUAN, Yi LIANG, Fei WANG, Ming GU

Journal Article

Research on a quantificational method for chromatic-light emotions of architectural wall coatings in

Ting WANG, Ma JIAN, Gang LIU, Xiaoxi LIU, Mingyu ZHANG

Journal Article

Development of oxide based diffusion barrier coatings for CFC components applied in modern furnaces

Kirsten BOBZIN, Lidong ZHAO, Thomas SCHLAEFER, Thomas WARDA

Journal Article

Feasibility study of plasma sprayed Al2O3 coatings as diffusion barrier on CFC

Kirsten BOBZIN, Lidong ZHAO, Nils KOPP, Thomas WARDA

Journal Article

Effects of additive NaI on electrodeposition of Al coatings in AlCl

Tianyu Yao, Haiyan Yang, Kui Wang, Haiyan Jiang, Xiao-Bo Chen, Hezhou Liu, Qudong Wang, Wenjiang Ding

Journal Article

Preparation and characterization of nanocrystalline ZrO2-7%Y2O3 powders for thermal barrier coatings

Kirsten BOBZIN, Lidong ZHAO, Thomas SCHLAEFER, Thomas WARDA

Journal Article

Bio-based Waterborne Poly(Vanillin-Butyl Acrylate)/MXene Coatings for Leather with Desired Warmth Retention

Jianzhong Ma,Li Ma,Lei Zhang,Wenbo Zhang,Qianqian Fan,Buxing Han,

Journal Article

Fabrication of superhydrophobic SiO2/PS coatings on wood surface

Zhang Ming and Wang Chengyu

Journal Article

Durability of plasma-sprayed Cr3C2-NiCr coatings under rolling contact conditions

Xiancheng ZHANG, Fuzhen XUAN, Shantung TU, Binshi XU, Yixiong WU

Journal Article

Time of flight improved thermally grown oxide thickness measurement with terahertz spectroscopy

Journal Article

Influence of surface modified mixed metal oxide nanoparticles on the electrochemical and mechanical properties of polyurethane matrix

Journal Article

Effect of TGO on the tensile failure behavior of thermal barrier coatings

Le WANG, Yuelan DI, Ying LIU, Haidou WANG, Haoxing YOU, Tao LIU

Journal Article