Influence of Plasma Electrolytic Oxidation on Corrosion Characteristics of Friction Stir Welded ZM21 Magnesium Alloy

2019 ◽  
Vol 55 (4) ◽  
pp. 735-742 ◽  
Author(s):  
KL. Hari Krishna ◽  
S. R. Koteswara Rao ◽  
Sreekanth Dondapati ◽  
N. Rameshbabu
Keyword(s):  
Magnesium Alloy ◽  
Plasma Electrolytic Oxidation ◽  
Friction Stir ◽  
Electrolytic Oxidation ◽  
Zm21 Magnesium Alloy ◽  
Plasma Electrolytic

Influence of Plasma Electrolytic Oxidation coating on corrosion characteristics of Friction Stir Welded ZE41 rare earth Magnesium alloy

2021 ◽  
Author(s):  
N Sivashanmugam ◽  
KL Harikrishna ◽  
S R Koteswara Rao ◽  
N Rameshbabu ◽  
P Manojkumar
Keyword(s):  
Mechanical Properties ◽  
Corrosion Resistance ◽  
Rare Earth ◽  
Magnesium Alloy ◽  
Plasma Electrolytic Oxidation ◽  
Dense Layer ◽  
Metallographic Examination ◽  
Friction Stir ◽  
Electrolytic Oxidation ◽  
Plasma Electrolytic

Abstract Magnesium and its alloys are extensively used in the defence, aerospace and automotive industries, owing to their excellent mechanical properties. But there is a requirement of corrosion prevention treatment before using it for applications, since the corrosion resistance of Mg alloy is poor. In this work, a study on the mechanical properties of friction stir welded ZE41 rare earth magnesium alloy thick plates of 15mm and 25mm, was carried out. A metallographic examination and mechanical tests were conducted on both the welds. Furthermore, Plasma Electrolytic Oxidation (PEO), a surface conversion treatment was carried out on both the base material as well as on the friction stir butt joints. X-ray diffraction and scanning electron microscopy analysis were carried out on all the samples, with and without coating. The coated and uncoated samples were assessed by potentiodynamic polarisation (PDP) tests and electrochemical impedance spectroscopy (EIS) to study the electrochemical corrosion behaviour. An outer porous layer and an inner dense layer, have been identified from the SEM images. From the corrosion tests results it was revealed that there was an improvement in the corrosion resistance of both the base metal as well as the weldments by the PEO coating process.

MODELING OF THE ELECTROLYZER ELECTRIC FIELD FOR PEO OF MAGNESIUM FOR THE STUDY OF SPECIAL CHAPTERS OF ELECTRICAL ENGINEERING

2019 ◽  
Author(s):  
Veta Mukaeva ◽  
E. Parfenov ◽  
R. Mukaev ◽  
M. Gorbatkov
Keyword(s):  
Magnesium Alloy ◽  
Electric Field ◽  
Plasma Electrolytic Oxidation ◽  
Electrical Engineering ◽  
Professional Competencies ◽  
Electrolytic Oxidation ◽  
Plasma Electrolytic

The issue of modeling the distribution of the electric field in the electrolyzer during the plasma-electrolytic oxidation of a magnesium alloy for the motivation and formation of professional competencies for students in the study of electrical engineering disciplines is considered.

Plasma electrolytic oxidation of AZ31 magnesium alloy diffusion bonded with aluminium

2021 ◽  
Author(s):  
Melwin Sajan ◽  
Hariprasad Sampatirao ◽  
Ravisankar Balasubramanian ◽  
Rameshbabu Nagumothu
Keyword(s):  
Magnesium Alloy ◽  
Plasma Electrolytic Oxidation ◽  
Az31 Magnesium Alloy ◽  
Electrolytic Oxidation ◽  
Plasma Electrolytic
Sign in / Sign up

Export Citation Format

Share Document