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Study of electrochemical behaviour of AZ91 Mg-based composites

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Title Study of electrochemical behaviour of AZ91 Mg-based composites
 
Creator Singh, Kamal Kant
Mangal, Dharamvir
 
Subject AZ91 Mg alloy
Alumina
Nyquist diagram
Polarization curves
SEM micrographs
Titanium carbide
Two-step stir casting process
 
Description 564-570
In this research study, electrochemical behaviour of AZ91/12Al2O3 and AZ91/12Al2O3/3TiC composites are investigated
using different methods such as linear polarization resistance, electrochemical spectroscopy, noise measurements, and
potential dynamic polarization curves. Both composites have been fabricated by using a two-step stir casting process. These
composites include alumina (Al2O3) and TiC (titanium carbide) as reinforcing particles amalgamated with AZ91 Mg alloy.
However, AZ91 Mg alloy depicts 9% of aluminium, 1% of zinc and rest is balance of pure magnesium, AZ91/12Al2O3
signifies AZ91 Mg alloy having 12 wt. % of alumina whereas AZ91/12Al2O3/3TiC indicates 3 wt. % of titanium carbide
and 12 wt.% of Al2O3 in AZ91 Mg alloy. The conclusive result of these methods illustrate that AZ91/12Al2O3 composite
exhibits high corrosion rate as compared to AZ91/3TiC/12Al2O3 composite due to high galvanizing effect (in between
corrosive surface) of AZ91 Mg alloy and alumina particles. Lastly, the results of the electrochemical impedance of both
composites illustrate the diffusion/adsorption type phenomenon.
 
Date 2024-07-03T09:05:52Z
2024-07-03T09:05:52Z
2024-07
 
Type Article
 
Identifier 0975-0991 (Online); 0971-457X (Print)
http://nopr.niscpr.res.in/handle/123456789/64161
https://doi.org/10.56042/ijct.v31i4. 4026
 
Language en
 
Publisher NIScPR-CSIR,India
 
Source IJCT Vol.31(4) [July 2024]