Hybrid silica sol-gel symmetric buried channel waveguide on silicon

2004 ◽  
Author(s):  
Paulo J. Moreira ◽  
Paulo V. S. Marques ◽  
Antonio P. Leite
Keyword(s):  
Sol Gel ◽  
Silica Sol ◽  
Channel Waveguide ◽  
Buried Channel ◽  
Hybrid Silica

scholarly journals Triethylphosphite as a network forming agent enhances in vitro biocompatibility and corrosion protection of hybrid organic–inorganic sol–gel coatings for Ti6Al4V alloys

2014 ◽  
Vol 2 (45) ◽  
pp. 7955-7963 ◽  
Author(s):  
A. A. El hadad ◽  
V. Barranco ◽  
A. Jiménez-Morales ◽  
G. J. Hickman ◽  
J. C. Galván ◽  
...  
Keyword(s):  
Corrosion Protection ◽  
Sol Gel ◽  
Silica Sol ◽  
In Vitro Biocompatibility ◽  
Hybrid Silica

Introduction of phosphorous into hybrid silica sol–gel coatings on Ti6Al4V gives materials demonstrating higher levels of intermolecular condensation and fibrinogen uptake as well as improved in vitro biocompatibility and corrosion protection.

Hybrid silica sol–gel coatings on Austempered Ductile Iron (ADI)

2005 ◽  
Vol 59 (17) ◽  
pp. 2219-2222 ◽  
Author(s):  
Andrés Pepe ◽  
Pablo Galliano ◽  
Silvia Ceré ◽  
M. Aparicio ◽  
A. Durán
Keyword(s):  
Ductile Iron ◽  
Sol Gel ◽  
Silica Sol ◽  
Austempered Ductile Iron ◽  
Hybrid Silica

scholarly journals Effects of TiO2/SiO2 Reinforced Nanoparticles on the Mechanical Properties of Green Hybrid Coating

2015 ◽  
Vol 47 ◽  
pp. 56-66 ◽  
Author(s):  
Mohammed Gobara
Keyword(s):  
Mechanical Properties ◽  
Sol Gel ◽  
Hardness Test ◽  
Silica Sol ◽  
X Ray Diffraction ◽  
Properties Of Coatings ◽  
X Ray ◽  
Hybrid Silica ◽  
Transmission Electron ◽  
Adhesion Performance

Titanium and silica oxides nanoparticles were introduced into hybrid silica sol–gel/epoxy coating to enhance the mechanical properties of coatings. Titanium dioxide (TiO2) and silica oxide (SiO2) were chemically synthesised before adding to the prepared silica sol gel coating. X-ray diffraction (XRD), Energy-dispersive x-ray analysis (EDX) and Transmission Electron microscope (TEM) were used to characterize the prepared nanoparticles. The coating was then applied to 3003 aluminium alloy (AA3003) surface. The adhesion performance of different sol gel coating compositions was investigated using shear test to define the influence of nanoparticles on adhesive strength of the coating. The Rockwell C hardness test was used to study the micro-hardness of different compositions of sol gel coating. Also, contact angel was used to investigate the hydrophobicity of the coatings. The results showed that there was a significant improvement of the adhesion performance of hybrid silica sol gel coating due to addition of TiO2 and the hydrophobicity of sol gel coating was increased due to addition of SiO2 nanoparticles.

Performance evaluation of mercapto functional hybrid silica sol–gel coating on copper surface

2014 ◽  
Vol 251 ◽  
pp. 135-142 ◽  
Author(s):  
Shusen Peng ◽  
Zhixiang Zeng ◽  
Wenjie Zhao ◽  
Jianmin Chen ◽  
Jin Han ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Sol Gel ◽  
Copper Surface ◽  
Silica Sol ◽  
Hybrid Silica

Synthesis of hybrid silica sol–gel coatings containing Zn particles on carbon steel and Al/Zn coated carbon steel

2005 ◽  
Vol 59 (29-30) ◽  
pp. 3937-3940 ◽  
Author(s):  
Andrés Pepe ◽  
Mario Aparicio ◽  
Silvia Ceré ◽  
Alicia Durán
Keyword(s):  
Carbon Steel ◽  
Sol Gel ◽  
Silica Sol ◽  
Hybrid Silica ◽  
Coated Carbon

scholarly journals Performance evaluation of mercapto functional hybrid silica sol–gel coating and its synergistic effect with f-GNs for corrosion protection of copper surface

RSC Advances ◽  
2018 ◽  
Vol 8 (14) ◽  
pp. 7438-7449 ◽  
Author(s):  
Shu Tian ◽  
Zhixiong Liu ◽  
Luli Shen ◽  
Jibin Pu ◽  
Wenqing Liu ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Synergistic Effect ◽  
Corrosion Protection ◽  
Sol Gel ◽  
Copper Surface ◽  
Silica Sol ◽  
Anticorrosion Coating ◽  
Hybrid Silica

An anticorrosion coating on copper consisting of mercapto functional hybrid silica sol–gel and f-GNs nanoplates with a synergistic effect was prepared.

scholarly journals Hybrid Sol–Gel Silica Coatings Containing Graphene Nanosheets for Improving the Corrosion Protection of AA2024-T3

Nanomaterials ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 1050 ◽  
Author(s):  
Nasima Afsharimani ◽  
Alicia Durán ◽  
Dušan Galusek ◽  
Yolanda Castro
Keyword(s):  
Colloidal Silica ◽  
Corrosion Behaviour ◽  
Graphene Nanosheets ◽  
Sol Gel ◽  
Electrochemical Measurement ◽  
Silica Sol ◽  
Silica Network ◽  
Corrosion Properties ◽  
Hybrid Silica ◽  
Modified Graphene

In the present work, nanostructured graphene nanosheets were added to hybrid silica sols and deposited on aluminium alloy A2024-T3 to study the effect on the corrosion behaviour. Sols were prepared using tetraethyl-orthosilicate (TEOS), 3-glycidoxypropyl-trimethoxysilane (GPTMS) and a colloidal silica suspension (LUDOX) as silica precursors with adding chemically modified graphene nanosheets (GN-chem). The graphene nanosheets were modified through a straightforward and simple hydrothermal approach and then, dispersed into a silica sol (SiO2/GN-chem). ATR-FTIR was used to optimize the silica sol–gel synthesis and to confirm the cross-linking of the silica network. The corrosion behaviour of the SiO2/GN-chem coatings was also analysed by electrochemical measurement (potentiodynamic polarization) in 0.05 M NaCl solution. The results showed that the incorporation of modified graphene nanosheets into hybrid silica sol–gel coatings affected the corrosion properties of the substrates. An improvement in the corrosion resistance was observed likely due to the enhanced barrier property and hydrophobic behaviour obtained by incorporation of GN-chem and colloidal silica nanoparticles.

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