Open AccessEffect of Scratches on Passive Anti-corrosion in Cr-Mn Ferroalloy
Author(s) -
Junlong Li,
Jianrui Feng,
Dingbo Li,
Xiaolong Wu,
Yunhang Ling
Publication year - 2020
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/746/1/012014
Subject(s) - ferroalloy , corrosion , sandpaper , metallurgy , chromium , materials science , oxide , humidity , relative humidity , manganese , metal , physics , thermodynamics
To study the scratch effect on the metal corrosion, some special scratches on the Cr-Mn ferroalloy were formed by rubbing a sandpaper on the sample surface. Two environmental cases are considered, that is, a humidity air, and a humidity air bottomed with alkaline–organic solution successively. The micro-surfaces of the samples are observed by Energy dispersive spectrometer, and the elementary contents are analyzed on an area and a line. Special scratches on the surface of Cr-Mn ferroalloy do not accelerate the metal corrosion in a humid organic alkaline environment. On the contrary, it would play a positive role in the sample passive anti-corrosion process. Chromium oxide and manganese oxide particles are produced by the oxidation of metals in a humidity air would gather in the grooves caused by the scratches. The relative study is less reported till now.