Real-time imaging of coating growth during plasma electrolytic oxidation of titanium

2007 ◽  
Vol 53 (4) ◽  
pp. 1987-1994 ◽  
Author(s):  
E. Matykina ◽  
A. Berkani ◽  
P. Skeldon ◽  
G.E. Thompson
Keyword(s):  
Real Time ◽  
Plasma Electrolytic Oxidation ◽  
Real Time Imaging ◽  
Electrolytic Oxidation ◽  
Plasma Electrolytic ◽  
Coating Growth

Spectroscopic and real-time imaging investigation of tantalum plasma electrolytic oxidation (PEO)

2011 ◽  
Vol 205 (23-24) ◽  
pp. 5406-5413 ◽  
Author(s):  
S. Stojadinović ◽  
J. Jovović ◽  
M. Petković ◽  
R. Vasilić ◽  
N. Konjević
Keyword(s):  
Real Time ◽  
Plasma Electrolytic Oxidation ◽  
Real Time Imaging ◽  
Electrolytic Oxidation ◽  
Plasma Electrolytic

scholarly journals Investigation of Growth Mechanism of Plasma Electrolytic Oxidation Coating on Al-Ti Double-Layer Composite Plate

Materials ◽  
2019 ◽  
Vol 12 (2) ◽  
pp. 272 ◽  
Author(s):  
Quanzhi Chen ◽  
Weizhou Li ◽  
Kui Ling ◽  
Ruixia Yang
Keyword(s):  
Double Layer ◽  
Growth Mechanism ◽  
Plasma Electrolytic Oxidation ◽  
Composite Plate ◽  
Electrochemical Impedance ◽  
Electric Energy ◽  
Layer Composite ◽  
Electrolytic Oxidation ◽  
Plasma Electrolytic ◽  
Coating Growth

The aluminum–titanium (Al-Ti) double-layer composite plate is a promising composite material, but necessary surface protection was required before its application. In this paper, plasma electrolytic oxidation (PEO) was employed to fabricate a ceramic coating on the surface of a Al-Ti double-layer composite plate. To investigate the coating growth mechanism on the Al-Ti double-layer composite plate, a single-Al plate and a single-Ti plate were introduced for comparison experiments. Results showed that, the composite of Al and Ti accelerated the coating growth rate on the part-Ti portion of the composite plate, and that of the part-Al portion was decreased. Electrochemical impedance spectroscopy analysis indicated that the equivalent circuit of the Al-Ti coating was formed by connecting two different circuits in parallel. The reaction behavior revealed that the electric energy during the PEO would leak from the circuit with the weaker blocking effect, and confirmed that the electric energy distribution followed the law of low-resistance distribution. Finally, the mechanism was extended to the PEO treatment on general metal matrix composites to broaden the application theory of the technology.

INVESTIGATION OF THE INFLUENCE OF COMPONENT COMPOSITION OF PEO ELECTROLYTES ON THEIR STABILITY AND COATING PROPERTIES

2020 ◽  
pp. 102-112
Author(s):  
Ya.S. Kuzin ◽  
◽  
I.A. Kozlov ◽  
S.V. Sibileva ◽  
M.A. Fomina ◽  
...  
Keyword(s):  
Plasma Electrolytic Oxidation ◽  
Liquid Glass ◽  
Component Composition ◽  
Structure And Properties ◽  
Coating Properties ◽  
Properties Of Coatings ◽  
Electrolytic Oxidation ◽  
Alkaline Electrolytes ◽  
Plasma Electrolytic ◽  
Coating Growth

The efficiency of various variants of the component composition of alkaline electrolytes of plasma electrolytic oxidation (PEO) was studied. Technical liquid glass, NaOH, Na2B4O7, Na3PO4, and NaAlO2 were used as components of aqueous solutions. All of the studied components of electrolytes are the most common for use in PEO processes of aluminum alloys. The influence of the component composition of electrolytes on their stability during 30 days of exposure was evaluated, and the most stable compositions were selected. The structure and properties of coatings formed on samples of aluminum alloy AK6 during PEO are studied. The dependences of the hardness of coatings and their growth rate on the composition of the electrolyte are established. Possible variants of coating growth in the PEO process with different component composition of electrolytes are proposed.

Kinetic features of wear-resistant coating growth by plasma electrolytic oxidation

2018 ◽  
Vol 6 (3) ◽  
pp. 150-158 ◽  
Author(s):  
Satish Tailor ◽  
Alexander G Rakoch ◽  
Alexandra A Gladkova ◽  
Phan Van Truong ◽  
Daria M Strekalina ◽  
...  
Keyword(s):  
Plasma Electrolytic Oxidation ◽  
Wear Resistant Coating ◽  
Wear Resistant ◽  
Resistant Coating ◽  
Electrolytic Oxidation ◽  
Plasma Electrolytic ◽  
Coating Growth ◽  
Kinetic Features

scholarly journals INFLUENCE OF PLASMA-ELECTROLYTIC OXIDATION PROCESS TECHNOLOGICAL PARAMETERS OF ALUMINUM ON COATING GROWTH RATE

2021 ◽  
pp. 165-178
Author(s):  
V. M. Posuvailo ◽  
V. V. Vytvytskiy ◽  
M. M. Romaniv ◽  
T. O. Pryhorovska
Keyword(s):  
Growth Rate ◽  
Plasma Electrolytic Oxidation ◽  
Oxide Coating ◽  
Electrical Parameters ◽  
Technological Parameters ◽  
Electrolytic Oxidation ◽  
Electrolyte Component ◽  
Coating Synthesis ◽  
Plasma Electrolytic ◽  
Coating Growth

There has been carried out an analysis of methods of oxide covering formation productivity increasing during plasma electrolytic oxidation of aluminum in electrolyte. There has been developed a technology of blank manufacturing and part strengthening by plasma electrolytic oxidation in the electrolyte, as well as the workbench has been modernized. There has been studied the process of oxidoceramic coating synthesis for the D16T aluminum deformed alloy of during plasma electrolytic oxidation in the electrolyte for different process parameters. It is established that the growth rate of oxidoceramic coating can be significantly increased by electrolyte component concentration involved in aluminum oxidation and rational choice of process electrical parameters. Hydrogen peroxide addition leads to obtained oxoceramic coating thickness increasing due to O, O2, OH, OH– concentration increasing in the electrolyte. It is established that the optimal concentration of H2O2 ranges from 5 g/l to 7 g/l.  A further increase of peroxide concentration leads to a decrease in peroxide effect on oxoceramic coating growth rate on the D16T aluminum deformed alloy due to pH changes of the electrolyte and the deterioration of the oxide coating.

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