^pof;
Metallurgy;
Technics,Central;
Iron;
&;
Steel;
Research;
Institute,Beijing;
100081,China;
^pof;
Material;
Science;
and;
Engineering,Shandong;
University;
of;
Science;
and;
Technology,Qingdao;
266510,China;
weathering; steel; corrosion; resistance; rare; earth; pitting; corrosion; energy; dispersive; spectroscopy; pitting; susceptibility; nonmetallic; inclusions; polarization; curves; electron; microscopy; pitting; potential; improved; quantitative; results; SEM; small; image; Q235; MnS; EDS; act;