STRUCTURE, MORPHOLOGY, AND ELEMENTAL-PHASE COMPOSITION OF J02002 STEEL AS A RESULT OF ELECTROLYTIC-PLASMA PROCESSING

2019 ◽  
Vol 23 (1) ◽  
pp. 25-36
Author(s):  
A. D. Mikhalev ◽  
K. A. Dyadyura ◽  
Ihor Lebedynskyi ◽  
S. N. Bratushka ◽  
Yaroslav O. Kravchenko
Keyword(s):  
Phase Composition ◽  
Plasma Processing ◽  
Structure Morphology ◽  
Electrolytic Plasma Processing

Phase Composition and Microhardness of Surface Layers 34CrNi1Mo Steel after Electrolytic-Plasma Processing

2013 ◽  
Vol 446-447 ◽  
pp. 142-145 ◽  
Author(s):  
Мazhyn Skakov ◽  
Lyudmila Yerygina ◽  
Michael Scheffler
Keyword(s):  
Phase Composition ◽  
Plasma Processing ◽  
Reference Value ◽  
Surface Layers ◽  
X Ray ◽  
Carbide Phases ◽  
Electrolytic Plasma Processing ◽  
Temperature Force ◽  
Heating Mode ◽  
Research Structure

Present work is devoted to phase composition research, structure and microhardness of structural steel 34CrNi1Mo after electrolytic-plasma processing in a cathode heating mode. Technology of electrolyte-plasma hardening provides reliable quality and the required mechanical properties of the products which are often subjected to wear and temperature-force actions. Results of microscopic researches and X-ray structure analysis are presented in this work. It is established that microstructure of steel detail modified layer being processed in electrolytic plasma at a temperature of 850 °C during 5 minutes, is generally represented by martensite quenching. The phase composition of steel 34CrNi1Mo after electrolytic-plasma carburization is presented by structure of α-Fе phase and carbide phases Fe2C, Fe3C. Surface microhardness increases more than by 2.5 times in comparison with a reference value.

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

Research of Electrolytic-Plasma Carbonitriding and Nitriding Influence on Phase Composition of the Stainless Steel

2013 ◽  
Vol 404 ◽  
pp. 40-43
Author(s):  
Маzhyn Skakov ◽  
Sherzod Kurbanbekov ◽  
Almira Zhilkаshinova
Keyword(s):  
Stainless Steel ◽  
Phase Composition ◽  
Austenitic Steel ◽  
Phase Structure ◽  
Plasma Processing ◽  
High Hardness ◽  
Residual Austenite ◽  
Nitride Phase ◽  
Modified Layer ◽  
Surface Modified

In the present work we have studied the phase structure of surface modified layer of austenitic steel 12Cr18Ni10Ti after electrolytic-plasma carbonitriding and nitriding. It was determined that the carbonitriding and nitriding with the subsequent hardening formed carbide and nitride phase. Also it is revealed that steel 12Cr18Ni10Ti after the electrolyte-plasma processing has high hardness. The microstructure of samples surface is presented by martensite and residual austenite. Optimum modes of steel 12Cr18Ni10Ti carbonitriding and nitriding by electrolytic-plasma way have been identified.

Structural-Phase Transformations in R6m5 Steel while Electrolytic-Plasma Processing

2014 ◽  
Vol 904 ◽  
pp. 217-221 ◽  
Author(s):  
Маzhyn Skakov ◽  
Erlan Batyrbekov ◽  
Bauyrzhan Rakhadilov ◽  
Michael Scheffler
Keyword(s):  
High Speed ◽  
Structural Phase ◽  
Plasma Processing ◽  
High Speed Steel ◽  
R6m5 Steel ◽  
Electrolytic Plasma Processing ◽  
Modified Layer ◽  
Surface Modified ◽  
Structural Phase Transformations ◽  
Surface Changes

The article examines regularities of high-speed steel surface changes in the phase and structural states of during the electrolytic-plasma processing. It is determined that after modification by electrolytic-plasma influence on the surface of R6M5 high-speed steel formation of small pores, microdefects and fine inclusion. Surface modified layer consists of nitrogen austenite, nitrogen martensite and fine nitride particles.

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