Elemental composition and microhardness of coatings made by electrolytic plasma oxidation on overlaid aluminum alloys in silicate-alkaline electrolyte

2019 ◽  
Vol 2 ◽  
pp. 38-43
Author(s):  
A. V. Kolomeychenko ◽  
◽  
I. N. Kravchenko ◽  
Keyword(s):  
Aluminum Alloys ◽  
Elemental Composition ◽  
Alkaline Electrolyte ◽  
Plasma Oxidation ◽  
Electrolytic Plasma Oxidation

Anti-Wear Coating Grown by Micro-Plasma Oxidation on Aluminum Alloys in the Solution of Aluminate-Titania

2011 ◽  
Vol 239-242 ◽  
pp. 667-670 ◽  
Author(s):  
Li Gong Zhang ◽  
Gui Mei Zhao ◽  
Xiao Ming Lai
Keyword(s):  
Aluminum Alloys ◽  
Ceramic Coating ◽  
Ceramic Coatings ◽  
Wear Property ◽  
Plasma Oxidation ◽  
X Ray Diffraction ◽  
Electrolytic Solution ◽  
X Ray ◽  
Hardness Tester ◽  
Wear Coating

In this paper, Aluminum trioxide ceramic coatings were grown on surfaces of 2024 Aluminum alloys by micro-plasma oxidation in an aluminate electrolytic solution. In order to decrease the density of the pores and increase the anti-wear property of the ceramic coatings, Titania were added into the aluminate electrolytic solution. The struture and anti-wear property of the produced ceramic coatings were measured by X-ray diffraction, scanning electron microscope , hardness tester and frictionometer. The results show that the thickness of the ceramic coating is about 24±1 μm, surfaces of the ceramic coatings are very uniform. The hardness of the doped coating is up to 930 HV, and the wear property of the coating is the more excellent than that of undoped coating.

Corrosion Properties of Plasma Oxidized Titanium Nitride for Biomedical Applications

2015 ◽  
Vol 227 ◽  
pp. 471-474 ◽  
Author(s):  
Jerzy Robert Sobiecki ◽  
Agnieszka Brojanowska ◽  
Konrad Kowalczyk
Keyword(s):  
Titanium Nitride ◽  
Calcium Ions ◽  
Biomedical Applications ◽  
Oxidation Potential ◽  
Plasma Oxidation ◽  
Corrosion Properties ◽  
Oxide Layers ◽  
Oxidation Processes ◽  
Oxidation Potentials ◽  
Electrolytic Plasma Oxidation

The article compares the corrosion properties of oxide layers formed on titanium nitride (obtained in glow-discharge nitriding) using electrolytic plasma oxidation. The corrosion properties are analysed in correlation with the surface morphology, microstructure and chemical composition of the layers. The oxidation processes were carried out in 10% and 25% phosphoric acid (V) solutions containing Ca2+ calcium ions. In each of these environments, oxide layers were formed using three oxidation potentials: 200V, 400V and 600 V. The oxidation potential and the concentration of acid and calcium ions in the oxidation solution was shown to affect the morphology of the surface and the corrosion properties of the oxide layers obtained.

scholarly journals Effect of duty cycle and treatment time on electrolytic plasma oxidation of commercially pure Al samples

2019 ◽  
Vol 8 (2) ◽  
pp. 2141-2147
Author(s):  
Matheus de M. Tavares ◽  
Jussier de O. Vitoriano ◽  
Ruthilene C.L. da Silva ◽  
Adonias R. Franco ◽  
Gelson B. de Souza ◽  
...  
Keyword(s):  
Duty Cycle ◽  
Treatment Time ◽  
Plasma Oxidation ◽  
Commercially Pure ◽  
Electrolytic Plasma Oxidation

INFLUENCE OF ELECTROLYTIC PLASMA OXIDATION COATING ON TENSILE BEHAVIOR OF DIE-CAST AM50 ALLOY SUBJECTED TO SALT CORROSION

2009 ◽  
Vol 23 (06n07) ◽  
pp. 960-965 ◽  
Author(s):  
LIHONG HAN ◽  
XUEYUAN NIE ◽  
PENG ZHANG ◽  
QIANG ZHANG ◽  
HENRY HU
Keyword(s):  
Mixed Layer ◽  
Ceramic Coatings ◽  
Ductile Deformation ◽  
Plasma Oxidation ◽  
Micro Cracks ◽  
Immersion Corrosion ◽  
Die Cast ◽  
Am50 Alloy ◽  
Electrolytic Plasma Oxidation ◽  
Fractured Surface

Three different thickness ceramic coatings were deposited on die-cast AM50 magnesium alloy in KOH and NaAlO 2 solution using electrolytic plasma oxidation (EPO) technology for corrosion prevention. Immersion corrosion tests were carried out in 3.5% NaCl solution for 336 hours to investigate the effect of coating thicknesses on tensile and fracture behaviors of the coated AM50 alloys. The results show that the yield strength (YS) and ultimate tensile strength (UTS) of the coated AM50 alloy subjected to immersion corrosion increase with an increase in coating thicknesses. Further analyses on stress and strain curves indicate that the coating enhances the strain-hardening rates of the corroded alloy during its plastic deformation. SEM examination on the fractured surface manifests that the substrate AM50 alloys exhibit characteristics of ductile deformation with deep dimples. However, brittle features prevail on the fractured surface of the mixed layer of coating plus oxidation corrosion product. Micro cracks were observed between the mixed layer and the AM50 alloy substrate induced by corrosion and within the mixed layer induced by EPO process, which could be responsible for the brittle fracture.

Electrolytic-plasma oxidation in borate electrolytes

2006 ◽  
Vol 42 (1) ◽  
pp. 55-59 ◽  
Author(s):  
V. S. Rudnev ◽  
I. V. Lukiyanchuk ◽  
V. G. Kuryavyi
Keyword(s):  
Plasma Oxidation ◽  
Electrolytic Plasma Oxidation

Self-lubricative coating grown by micro-plasma oxidation on aluminum alloys in the solution of aluminate–graphite

2008 ◽  
Vol 254 (20) ◽  
pp. 6395-6399 ◽  
Author(s):  
Xiaohong Wu ◽  
Wei Qin ◽  
Yun Guo ◽  
Zhaoyang Xie
Keyword(s):  
Aluminum Alloys ◽  
Plasma Oxidation
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