scholarly journals Development of a novel cathodic plasma/electrolytic deposition technique

2007 ◽  
Vol 201 (21) ◽  
pp. 8771-8781 ◽  
Author(s):  
T. Paulmier ◽  
J.M. Bell ◽  
P.M. Fredericks
Keyword(s):  
Electrolytic Deposition ◽  
Deposition Technique ◽  
Cathodic Plasma ◽  
Plasma Electrolytic

Preparation of Mn doped Al2O3 heat-dissipating coatings on titanium alloy by cathodic plasma electrolytic deposition

Vacuum ◽  
2019 ◽  
Vol 159 ◽  
pp. 228-234 ◽  
Author(s):  
Zhikai Liu ◽  
Qiu Sun ◽  
Ying Song ◽  
Hairui Wang ◽  
Xiangqun Chen ◽  
...  
Keyword(s):  
Titanium Alloy ◽  
Electrolytic Deposition ◽  
Cathodic Plasma ◽  
Plasma Electrolytic ◽  
Mn Doped

scholarly journals Effect of Duty Cycle on Properties of Al2O3 Ceramic Coatings Fabricated on TiAl Alloy via Cathodic Plasma Electrolytic Deposition

Materials ◽  
2018 ◽  
Vol 11 (10) ◽  
pp. 1962 ◽  
Author(s):  
Shaoqing Wang ◽  
Faqin Xie ◽  
Xiangqing Wu ◽  
Jixiang An
Keyword(s):  
Electron Microscopy ◽  
Wear Resistance ◽  
Heat Resistance ◽  
Duty Cycle ◽  
Tial Alloy ◽  
Ceramic Coatings ◽  
Electrolytic Deposition ◽  
Al2o3 Ceramic ◽  
Cathodic Plasma ◽  
Plasma Electrolytic

In order to study the effect of duty cycle during the cathodic plasma electrolytic deposition (CPED) process, Al2O3 ceramic coatings were fabricated via the CPED technique on prepared TiAl alloy in an Al(NO3)3 electrolyte with different duty cycles. Microstructure, morphology, and chemical compositions of coatings were analyzed by scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), transmission electron microscopy (TEM), and X-ray diffraction (XRD). The mechanical properties, such as thickness, hardness, and binding strength, were also characterized, and heat-resistance and wear-resistance tested. The results indicated that duty cycle mainly affected the relative crystallinity of CPED coatings. As the duty cycle increased, the crystallinity of CPED coatings increased, the content of Al(OH)3 and γ-Al2O3 decreased, and the content of α-Al2O3 increased. The thickness and bonding strength both increased firstly and then decreased, while hardness increased as duty cycle increased. Heat-resistance and wear-resistance of TiAl alloy with CPED coating was highly improved compared to that of TiAl alloy substrate without CPED coating.

Modification of corrosion and tribological properties of 316L stainless steel by cathodic plasma electrolytic deposition of zirconia

2015 ◽  
Vol 62 (5) ◽  
pp. 288-293 ◽  
Author(s):  
Shabnam Karimi ◽  
Fatemeh Mahzoon ◽  
Sirus Javadpour ◽  
Kamal Janghorban
Keyword(s):  
Stainless Steel ◽  
Surface Layer ◽  
Tribological Properties ◽  
316L Stainless Steel ◽  
Coated Sample ◽  
Electrolytic Deposition ◽  
Stainless Steel Surface ◽  
Content Type ◽  
Cathodic Plasma ◽  
Plasma Electrolytic

Purpose – This paper aims to study the deposition of ZrO2 on 316L stainless steel surface using cathodic plasma electrolytic deposition (CPED) technique in potassium hexafluorozirconate (K2ZrF6) electrolyte solution to promote its corrosion and tribological properties. Design/methodology/approach – Plasma electrolytic oxidizing (PEO) technique is commonly used to form zirconium dioxide (ZrO2) on various substrates. But, in this paper, cathodic type of this technique (CPED) was used. Findings – Composition of the surface layer was analyzed by X-ray diffraction (XRD) and the formation of ZrO2 on the substrate was confirmed. Scanning electron microscope (SEM) was used to observe the unique morphology of the surface layer. The corrosion resistance of the coated surface was investigated by electrochemical methods involving cyclic voltammetery in Ringer’s solution. The treated sample showed a better pitting resistance. Pin-on-disk wear tests revealed that the friction coefficient of the coated sample is lower than that of the substrate. Also, it was shown that hardness and roughness of the coated sample increased after plasma electrolytic treatment. Originality/value – This paper considers the CPED of ZrO2 coating on 316L stainless steel. Some recent research works with ZrO2 coating have been prepared by PEO. There is limited or no record on the study of ZrO2 coatings by CPED process. In this study, the effort has been made to prepare a zirconia (ZrO2) coating on the stainless steel substrate through cathodic plasma electrolytic process under 200 V. Due to the excellent wear resistance, ZrO2 may be used as a high resistant and protective coating on stainless steels, which are widely used in industries and biomedical applications.

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