Corrosion Behavior of Spheroidal Graphite Cast Iron with Different Carbon Contents in Sulfuric Acid Solutions

CORROSION ◽  
10.5006/1147 ◽  
2014 ◽  
Vol 70 (8) ◽  
pp. 796-803
Author(s):  
Y. Miyata ◽  
Y. Kuwahara ◽  
S. Asakura ◽  
T. Shinohara ◽  
T. Yakou ◽  
...  
2013 ◽  
Vol 2013 ◽  
pp. 1-7
Author(s):  
Yoshikazu Miyata ◽  
Yuki Kuwahara ◽  
Shukuji Asakura ◽  
Tadashi Shinohara ◽  
Takao Yakou ◽  
...  

The rate equation of anodic dissolution reaction of spheroidal graphite cast iron in sulfuric acid solutions at 298 K has been studied. The cast irons have different areas of pearlite. The anodic Tafel slope of 0.043 V decade−1and the reaction order with respect to the hydroxyl ion activity of 1 are obtained by the linear potential sweep technique. The anodic current density does not depend on the area of pearlite. There is no difference in the anodic dissolution reaction mechanisms between pure iron and spheroidal graphite cast iron. The anodic current density of the cast iron is higher than that of the pure iron.


2020 ◽  
Vol 69 (5) ◽  
pp. 140-147
Author(s):  
Ichiro Dote ◽  
Yuuki Kuwahara ◽  
Nobuhiro Kai ◽  
Shigenobu Kainuma

2014 ◽  
Vol 63 (5) ◽  
pp. 337-340
Author(s):  
Yuuki Kuwahara ◽  
Yoshikazu Miyata ◽  
Shukuji Asakura ◽  
Tadashi Shinohara ◽  
Takao Yakou ◽  
...  

2007 ◽  
Vol 537-538 ◽  
pp. 389-396 ◽  
Author(s):  
Ibolya Kardos ◽  
Zoltán Gácsi ◽  
Péter János Szabó

Color etching is a widely used technique for visualizing different phases in metallic materials. Its advantage to the traditional etching techniques is that it gives additional information within one phase, namely, the color shade of a given phase can change in a certain range. This paper demonstrates that, due to the physics of the color etching, the shade of a phase also depends on the crystallographic orientation of the investigated grain. As a test material, spheroidal graphite cast iron was used, and individual grain orientation was identified by automated electron back scattering diffraction (EBSD). Results showed that there is a strong correlation between grain orientation and the shades obtained by color etching.


Wear ◽  
1996 ◽  
Vol 198 (1-2) ◽  
pp. 150-155 ◽  
Author(s):  
K. Shimizu ◽  
T. Noguchi ◽  
T. Kamada ◽  
H. Takasaki

Materia Japan ◽  
2009 ◽  
Vol 48 (12) ◽  
pp. 624-624 ◽  
Author(s):  
Yasuhide Ishiguro ◽  
Kenji Ichino ◽  
Hideto Takasugi

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