Effect of Sand Concentration on Erosion-Corrosion Synergism of AISI 420 Stainless Steel
Author(s):
Abstract:
In this paper, effect of particle concentration on the erosion -corrosion behavior of AISI 420 stainless steel was investigated. Erosion-corrosion tests were conducted using an impingement jet apparatus containing a solution of 3.5% NaCl and 30, 60 and 90 g /lit of SiO2 particles and weight loss of samples were measured. Tafel polarization test was carried out to study the static corrosion behavior of steel samples. Scanning electron microscope was used to study the synergy between erosion and corrosion of th e alloy. The results showed that by increasing the sand concentration from 30 to 90 g/lit, erosion and erosion corrosion rates increased 73 and 153%, respectively. The results also showed that the increase of sand concentration the synergy rate between erosion and corrosion also increased.
Keywords:
Erosion , corrosion , Synergy rate , SiO2 , Stainless steel
Language:
Persian
Published:
Corrosion Science and Engineering Journal, Volume:2 Issue: 1, 2012
Page:
43
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