Corrosion Protection of Cerium Conversion Coating Modified with a Self-Assembled Layer of Phosphoric Acid Mono-n-Alkyl Ester

2006 ◽  
Vol 9 (3) ◽  
pp. B15 ◽  
Author(s):  
Y. Kobayashi ◽  
Y. Fujiwara
Keyword(s):  
Phosphoric Acid ◽  
Corrosion Protection ◽  
Conversion Coating ◽  
Alkyl Ester ◽  
Self Assembled ◽  
Self Assembled Layer

scholarly journals Design and Multidimensional Screening of Flash-PEO Coatings for Mg in Comparison to Commercial Chromium(VI) Conversion Coating

Metals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 337
Author(s):  
Ewa Wierzbicka ◽  
Marta Mohedano ◽  
Endzhe Matykina ◽  
Raul Arrabal
Keyword(s):  
Corrosion Resistance ◽  
Corrosion Protection ◽  
Electrochemical Impedance ◽  
Salt Spray ◽  
Conversion Coating ◽  
Neutral Salt ◽  
Chromium Vi ◽  
Alkaline Electrolytes ◽  
Az31b Alloy ◽  
Plasma Electrolytic

REACH (Registration, Evaluation, Authorisation and Restriction of Chemicals) regulations demand for an expedient discovery of a Cr(VI)-free alternative corrosion protection for light alloys even though the green alternatives might never be as cheap as current harmful technologies. In the present work, flash- plasma electrolytic oxidation coatings (FPEO) with the process duration < 90 s are developed on AZ31B alloy in varied mixtures of silicate-, phosphate-, aluminate-, and fluoride-based alkaline electrolytes implementing current density and voltage limits. The overall evaluation of the coatings’ anticorrosion performance (electrochemical impedance spectroscopy (EIS), neutral salt spray test (NSST), paintability) shows that from nine optimized FPEO recipes, two (based on phosphate, fluoride, and aluminate or silicate mixtures) are found to be an adequate substitute for commercially used Cr(VI)-based conversion coating (CCC). The FPEO coatings with the best corrosion resistance consume a very low amount of energy (~1 kW h m−2 µm−1). It is also found that the lower the energy consumption of the FPEO process, the better the corrosion resistance of the resultant coating. The superb corrosion protection and a solid environmentally friendly outlook of PEO-based corrosion protection technology may facilitate the economic justification for industrial end-users of the current-consuming process as a replacement of the electroless CCC process.

Controlled release and corrosion protection by self-assembled colloidal particles electrodeposited onto magnesium alloys

2015 ◽  
Vol 3 (8) ◽  
pp. 1667-1676 ◽  
Author(s):  
Jiadi Sun ◽  
Ye Zhu ◽  
Long Meng ◽  
Wei Wei ◽  
Yang Li ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Magnesium Alloy ◽  
Controlled Release ◽  
Magnesium Alloys ◽  
Corrosion Protection ◽  
Colloidal Particles ◽  
Self Assembled ◽  
Bioactive Agents

Self-assembled nanoparticles loaded with bioactive agents were electrodeposited to provide the magnesium alloy with controlled release and corrosion resistance properties.

scholarly journals Two-Dimensional Layered Oxide Structures Tailored by Self-Assembled Layer Stacking via Interfacial Strain

2016 ◽  
Vol 8 (26) ◽  
pp. 16845-16851 ◽  
Author(s):  
Wenrui Zhang ◽  
Mingtao Li ◽  
Aiping Chen ◽  
Leigang Li ◽  
Yuanyuan Zhu ◽  
...  
Keyword(s):  
Two Dimensional ◽  
Layered Oxide ◽  
Layer Stacking ◽  
Interfacial Strain ◽  
Self Assembled ◽  
Self Assembled Layer

A Self-Assembled Supramolecular Material Containing Phosphoric Acid for Ultrafast and Efficient Capture of Uranium from Acidic Solutions

2018 ◽  
Vol 7 (1) ◽  
pp. 950-960 ◽  
Author(s):  
Ning Pan ◽  
Yongdong Jin ◽  
Xiaoqiang Wang ◽  
Xiaoping Hu ◽  
Fangting Chi ◽  
...  
Keyword(s):  
Phosphoric Acid ◽  
Acidic Solutions ◽  
Self Assembled ◽  
Supramolecular Material

Catechol/polyethyleneimine conversion coating with enhanced corrosion protection of magnesium alloys: potential applications for vascular implants

2018 ◽  
Vol 6 (43) ◽  
pp. 6936-6949 ◽  
Author(s):  
Hao Zhang ◽  
Lingxia Xie ◽  
Xiaolong Shen ◽  
Tengda Shang ◽  
Rifang Luo ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Surface Modification ◽  
Magnesium Alloys ◽  
Corrosion Protection ◽  
Conversion Coating ◽  
Good Corrosion Resistance ◽  
Potential Applications

A catechol/polyethyleneimine conversion coating on a MgZnMn alloy possessed good corrosion resistance. Heparin was further grafted on it and this showed the potential for surface modification of magnesium-based vascular implants.

Mimicking the competitive and cooperative behaviors with multi-terminal synaptic memtransistors

2020 ◽  
Vol 8 (18) ◽  
pp. 6063-6071 ◽  
Author(s):  
Chaoyue Zheng ◽  
Yuan Liao ◽  
Ziyu Xiong ◽  
Ye Zhou ◽  
Su-Ting Han
Keyword(s):  
Cooperative Behaviors ◽  
Self Assembled ◽  
Self Assembled Layer

The multi-terminal memtransistor is fabricated with a self-assembled layer of APTES to mimic the synaptic competitive and cooperative behaviors.

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