Preparation of Ni-SiC nano-composite coating by rotating magnetic field-assisted electrodeposition

2020 ◽  
Vol 57 ◽  
pp. 787-797 ◽  
Author(s):  
Renjie Ji ◽  
Kun Han ◽  
Hui Jin ◽  
Xiaopeng Li ◽  
Yonghong Liu ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Composite Coating ◽  
Rotating Magnetic Field ◽  
Nano Composite ◽  
Nano Composite Coating

Experimental investigation of electrodeposited Ni-Al2O3/ZrO2 nano composite on HSLA ASTM A860 alloy

2021 ◽  
Author(s):  
Chandrasekhara Sastry Chebiyyam ◽  
Pradeep N ◽  
Shaik AM ◽  
Hafeezur Rahman A ◽  
Sandeep Patil
Keyword(s):  
Grain Size ◽  
Corrosion Resistance ◽  
Composite Coating ◽  
Base Alloy ◽  
Composite Coatings ◽  
Nano Particles ◽  
Alloy Sample ◽  
Nano Composite ◽  
Nano Coating ◽  
Nano Composite Coating

Abstract Nano composite coatings on HSLA ASTM A860 alloy, adds to the barrier efficacy by increase in the microhardness, wear and corrosion resistance of the substrate material. Additionally, reduction of delamination of the nano composite coating sample is ascertained. Ball milling is availed to curtail the coating samples (Al2O3/ZrO2) to nano size, for forming a electrodeposited product on the substrate layer. The curtailment in grain size was ascertained to be 17.62% in Ni-Al2O3/ZrO2 nano composite coating. During the deposition process, due to the presence of Al2O3/ZrO2 nano particles an increase in cathode efficiency is ascertained. An XRD analysis of the nano composite coating indicates a curtailment in grain size along with increase in the nucleation sites causing a surge in the growth of nano coating layer. In correlation to uncoated HSLA ASTM A36 alloy sample, a surge in compressive residual stress by 47.14%, reduction of waviness by 32.14% (AFM analysis), upsurge in microhardness by 67.77% is ascertained in Ni-Al2O3/ZrO2 nano composite coating. Furthermore, in nano coated Ni-Al2O3/ZrO2 composite a reduction is observed pertaining to weight loss and friction coefficients by 27.44% and 13% in correlation to plain uncoated alloy respectively. A morphology analysis after nano coating indicates, Ni-Al2O3/ZrO2 particles occupy the areas of micro holes, reducing the wide gaps and crevice points inside the matrix of the substrate, enacting as a physical barrier to upsurge the corrosion resistance by 67.72% in correlation to HSLA ASTM A860 base alloy.

Microstructures and properties of plasma sprayed FeAl/CeO2/ZrO2 nano-composite coating

2010 ◽  
Vol 256 (13) ◽  
pp. 4176-4184 ◽  
Author(s):  
Bin Yin ◽  
Guang Liu ◽  
Huidi Zhou ◽  
Jianmin Chen ◽  
Fengyuan Yan
Keyword(s):  
Composite Coating ◽  
Nano Composite ◽  
Nano Composite Coating ◽  
Plasma Sprayed

Preparation of Co-YSZ/HAp Nano-composite Coating on Ti Substrate by Electrochemical Method

2006 ◽  
Vol 22 (05) ◽  
pp. 590-595
Author(s):  
WANG Zhou-Cheng ◽  
◽  
◽  
HUANG Long-Men ◽  
TANG Yi ◽  
...  
Keyword(s):  
Composite Coating ◽  
Electrochemical Method ◽  
Nano Composite ◽  
Nano Composite Coating

scholarly journals Development and characterization of magnetron sputtered self-lubricating Au-Ni/a-C nano-composite coating on CuCrZr alloy substrate

2019 ◽  
Vol 492 ◽  
pp. 540-549 ◽  
Author(s):  
Zhaoxi Chen ◽  
Li Qiao ◽  
Julien Hillairet ◽  
Yuntao Song ◽  
Viviane Turq ◽  
...  
Keyword(s):  
Composite Coating ◽  
Nano Composite ◽  
Alloy Substrate ◽  
Nano Composite Coating

Comparative study on Ni and Ni-α-Al2O3 nano composite coating on Al6061 substrate material

2020 ◽  
Vol 24 ◽  
pp. 975-982 ◽  
Author(s):  
C.R. Raghavendra ◽  
S. Basavarajappa ◽  
Irappa Sogalad ◽  
Siddaligayya Mathad
Keyword(s):  
Comparative Study ◽  
Composite Coating ◽  
Substrate Material ◽  
Nano Composite ◽  
Nano Composite Coating ◽  
Α Al2o3

Influence of Nanocomposite Surface Coating on Biofilm Formation In Situ

2007 ◽  
Vol 7 (12) ◽  
pp. 4642-4648 ◽  
Author(s):  
M. Hannig ◽  
L. Kriener ◽  
W. Hoth-Hannig ◽  
C. Becker-Willinger ◽  
H. Schmidt
Keyword(s):  
Free Energy ◽  
Composite Coating ◽  
Surface Free Energy ◽  
Biofilm Formation ◽  
Tooth Surface ◽  
Dense Layer ◽  
Electron Microscopic ◽  
Nano Composite ◽  
Nano Composite Coating

Caries and periodontitis, the most wide-spread oral diseases around the world, are caused by bacterial adherence and biofilm formation onto the natural as well as restored tooth surface. One possible way to prevent the pathogenic consequences of intraoral biofilm formation might be the modification of the tooth surface by application of an anti-adhesive coating that interferes with the bacterial attachment and subsequent bacterial accumulation. The objective of this study was to investigate the effect of an experimental, low surface free energy nano-composite coating material on biofilm formation in situ. For this purpose, an organic/inorganic nano-composite coating (NANOMER®, INM, Saarbrücken, Germany) with a surface free energy of 18–20 mJ/m2 was applied to enamel as well as titanium specimens. The nano-composite coated specimens and un-coated controls were attached to removable intraoral splints and carried by volunteers over 24 h in the oral cavity. After intraoral exposure, specimens were processed for transmission electron microscopic analysis. On non-coated enamel and titanium control samples a multi-layer of adherent bacteria was found. In contrast, on nano-composite coated specimens strongly reduced biofilm formation was observed. In most areas of the surface-coated specimens only a 10–20 nm thick electron dense layer of adsorbed salivary proteins with adherent protein agglomerates of 20–80 nm diameter could be detected. In addition, detachment of the adsorbed biofilm from the nano-composite coated surfaces was evident in electron microscopic micrographs. The present investigation provides ultrastructural evidence that it is possible to cover enamel as well as titanium with a nano-composite coating revealing easy-to-clean surface properties that cause reduced biofilm formation and accelerated removal of adherent biofilms under oral conditions.

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