Open AccessInvestigation of Electro-chemical performance of AZ31 Magnesium alloy – CaSiO3 Metal Matrix Composites in different environments
Author(s) -
Penugonda Suresh Babu,
Y. Pratapa Reddy,
K. L. Narayana,
Mantrala Kedar Mallik
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1112/1/012002
Subject(s) - materials science , corrosion , magnesium , magnesium alloy , simulated body fluid , alloy , calcium silicate , metal , matrix (chemical analysis) , sodium silicate , mass fraction , electrochemistry , calcium , silicate , composite material , metallurgy , chemical engineering , chemistry , scanning electron microscope , electrode , engineering
The electrochemical behaviour of AZ31 magnesium alloy as matrix made as metal matrix composites (MMC) by adding the reinforcement with various weight percentages of Calcium Silicate (CaSiO 3 ) powder was investigated under the influence of 3.5 percent Sodium Chloride (NaCl) and Simulated Body Fluid (SBF) environments using electrochemical workstation. After experimentation, the results exhibit that the pure magnesium alloy sample with 0% calcium silicate exhibits the corrosion rate higher value (40.562mmpy) compared to the other samples when 4 % of calcium silicate is added as additive which exhibits the lower corrosion rate (25.510mmpy). Similarly, the polarisation resistance is also calculated for the samples and the average value of polarisation resistance for the pure magnesium sample is 153.813mA and the other for other samples it lies in between 140.5 mA to 185.72mA respectively. By experimentation it concludes that addition of reinforcement with various weight percentages plays a significant role in the reduction of corrosion rate of AZ31 magnesium alloy rather than using it in a pure form.