Surface modification by electrolytic plasma processing for high Nb-TiAl alloys

2016 ◽  
Vol 389 ◽  
pp. 1161-1168 ◽  
Author(s):  
Wanyuan Gui ◽  
Guojian Hao ◽  
Yongfeng Liang ◽  
Feng Li ◽  
Xiao Liu ◽  
...  
Keyword(s):  
Surface Modification ◽  
Plasma Processing ◽  
Tial Alloys ◽  
Electrolytic Plasma Processing

scholarly journals Surface Modification of Q195 Structure Carbon Steel by Electrolytic Plasma Processing

Metals ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 831
Author(s):  
Fang Cheng ◽  
Wanyuan Gui ◽  
Junpin Lin
Keyword(s):  
Surface Modification ◽  
Carbon Steel ◽  
Surface Engineering ◽  
Zinc Coating ◽  
Plasma Processing ◽  
Steel Sample ◽  
Substantial Improvement ◽  
Engineering Technology ◽  
Surface Pretreatment ◽  
Electrolytic Plasma Processing

In this study, we applied an emerging, environmentally friendly surface engineering technology, electrolytic plasma processing (EPP), for the surface modification of Q195 structure carbon steel surface pretreatment and further Zn coating. Treating the surfaces of Q195 structure carbon steel by EPP was a quite dynamic process, which was investigated using scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and X-ray diffraction (XRD). The results shown that surface scale can be effectively remove after 40 s EPP treatment, and the EPP-treated Q195 structure carbon steel revealed a slight decrease in elastic modulus and hardness, but a substantial improvement in tensile (especially plastic) mechanical properties. Moreover, the further EPP modification conducted on the pretreated Q195 structure carbon steel sample for production of a layer of compact zinc coating with 15 μm thickness under an optimization EPP process. We also identified the modification mechanism of EPP to Q195 structure carbon steel, which may provide theoretical and practical guidance for future researchers and developers.

Effect of Electrolytes Variation on the Formation of Oxide Layers of Al7075 Alloys by Electrolytic Plasma Processing

2013 ◽  
Vol 378 ◽  
pp. 209-212
Author(s):  
Dong Gun Lee ◽  
Byunh Hyun Ahn ◽  
Je Hyun Lee ◽  
Uk Rae Cho ◽  
Bon Heun Koo
Keyword(s):  
Treatment Process ◽  
Protective Coatings ◽  
Plasma Processing ◽  
Weight Ratio ◽  
High Hardness ◽  
High Strength ◽  
Heavy Duty ◽  
Conventional Steel ◽  
Steel Material ◽  
Electrolytic Plasma Processing

Al7075 alloy has typically good mechanical properties. Al7075 alloy has an ultimate tensile strength and yield strength, which is commonly used in the manufacturing of heavy-duty structures requiring good corrosion resistance and in applications requiring high strength to weight ratio, as well as good fatigue resistance. However, as compared to strength and corrosion of conventional steel material, it has some drawbacks. To overcome these disadvantages, Electrolytic plasma processing (EPP) was used. (EPP) is a novel electrochemical and physical surface treatment process for generating protective coatings on light metals. Because, these coating scan present high hardness and continuous barriers, it can offers good protection against abrasion, corrosion and heat as well as electrical insulation. The EPP treatments were carried out under a hybrid voltage of AC 200V (50Hz) combined with DC 260V power supply.

Pretreatment on Ti substrate for Ti/Pt anode by electrolytic plasma processing

2018 ◽  
Vol 96 (4) ◽  
pp. 174-178 ◽  
Author(s):  
L. Yang ◽  
P. Zhang ◽  
Y. Liu ◽  
J. Liang ◽  
W. B. Tian ◽  
...  
Keyword(s):  
Plasma Processing ◽  
Electrolytic Plasma Processing

Effect of Nitrogen Electrolytes on Al2021 Alloy by Electrolytic Plasma Processing

2013 ◽  
Vol 378 ◽  
pp. 213-219
Author(s):  
Byunh Hyun Ahn ◽  
Dong Gun Lee ◽  
Je Hyun Lee ◽  
Uk Rae Cho ◽  
Bon Heun Koo
Keyword(s):  
Room Temperature ◽  
Coating Layer ◽  
Plasma Processing ◽  
Nitrogen Supply ◽  
X Ray ◽  
Composition And Structure ◽  
Electrolytic Plasma Processing ◽  
Evolution Of Microstructure ◽  
Wear Tests ◽  
Scanning Electron

AlON-Al2O3coatings were prepared on Al2021 alloy by the electrolytic plasma processing (EPP) method. NaNO2, NaNO3and NH4NO3were chosen as nitrogen supply agents. The nitrogen inducing effect was studied by a combined composition and structure analysis of the coating layer carried out by X-ray diffractometer (XRD), scanning electron microscopy (SEM) for the specimens EPP-treated at room temperature for 15 min under a hybrid voltage of 260V DC plus 200V AC (50Hz) power. Microhardness tests and wear tests were carried out to correlate the evolution of microstructure and resulting mechanical properties.

Investigation of the Influence of Electrolytic-Plasma Processing on Structural-Phase State and Mechanical Properties of the 40CrNiAl Alloy

2014 ◽  
Vol 1044-1045 ◽  
pp. 67-70
Author(s):  
Mazhyn Skakov ◽  
Gulnara Yerbolatova ◽  
Nurgamit Kantai ◽  
Michael Scheffler
Keyword(s):  
Mechanical Properties ◽  
Solid Solution ◽  
Phase State ◽  
Structural Phase ◽  
Plasma Processing ◽  
Structural Phase State ◽  
Dispersed Particles ◽  
Electrolytic Plasma Processing

It is shown that as a result of electrolytic plasma carburization is released from the solid solution carbides dispersed particles based alloy components, i.e. hardening occurs. Found that after processing the surface of the alloy samples 40CrNiAl modified form reinforced layers whose thickness depends on the time, temperature and processing of components of the electrolyte.

Dual Electrolytic Plasma Processing for Steel Surface Cleaning and Passivation

2017 ◽  
Vol 26 (10) ◽  
pp. 5009-5015 ◽  
Author(s):  
L. Yang ◽  
P. Zhang ◽  
J. Shi ◽  
J. Liang ◽  
W. B. Tian ◽  
...  
Keyword(s):  
Steel Surface ◽  
Plasma Processing ◽  
Surface Cleaning ◽  
Electrolytic Plasma Processing
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