Development of Electrochemical Surface Treatment for Improvement of Localized Corrosion Resistance of Zirconium in Chloride Environment

2020 ◽  
Vol 69 (11) ◽  
pp. 307-314
Author(s):  
Tomoyo Manaka ◽  
Yusuke Tsutsumi ◽  
Maki Ashida ◽  
Peng Chen ◽  
Hideki Katayama ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Surface Treatment ◽  
Localized Corrosion ◽  
Chloride Environment ◽  
Electrochemical Surface Treatment

scholarly journals Corrosion Resistance of Domex 700 Steel After Combined Surface Treatment in Chloride Environment

2017 ◽  
Vol 192 ◽  
pp. 58-63 ◽  
Author(s):  
Kamil Borko ◽  
Branislav Hadzima ◽  
Martina Neslušan Jacková
Keyword(s):  
Corrosion Resistance ◽  
Surface Treatment ◽  
Chloride Environment

scholarly journals Development of Electrochemical Surface Treatment to Visualize Critical Corrosion-Inducing Inclusions of Zr in Chloride Environments

2021 ◽  
Author(s):  
Tomoyo MANAKA ◽  
Yusuke TSUTSUMI ◽  
Peng CHEN ◽  
Maki ASHIDA ◽  
Hideki Katayama ◽  
...  
Keyword(s):  
Surface Treatment ◽  
Cathodic Polarization ◽  
Initiation Site ◽  
Localized Corrosion ◽  
Corrosion Mechanism ◽  
Corrosion Initiation ◽  
Surrounding Matrix ◽  
Corrosion Pit ◽  
Electrochemical Surface Treatment ◽  
Zr Alloy

Abstract An electrochemical surface treatment was developed to visualize the corrosion-inducing inclusions of Zr in chloride environments. Pure Zr and Zr alloy (Zr-0.5O-0.5C) were evaluated in this study. The electrochemical surface treatment consisted of repeated galvanostatic anodic polarization and potentiostatic cathodic polarization. After the electrochemical surface treatment, only one brittle and non-conductive shell of Zr oxide was observed at the corrosion initiation site on the tested surface. The corrosion-inducing inclusions were found inside the corrosion pit under the optimum polarization conditions. At the corrosion initiation site on pure Zr, the area inside the corrosion pit contained larger amounts of O, C, and Si than the surrounding matrix. In the case of the Zr-0.5O-0.5C alloy, relatively larger inclusions were observed after the treatment. Extremely large amounts of Si, together with O and C, were present in the inclusions. The inclusions that induced localized corrosion on the pure Zr and Zr-0.5O-0.5C specimens were found to be precipitated, involving the specific aggregation of Si. The surface treatment developed in this study is expected to be utilized as a powerful tool to elucidate the localized corrosion mechanism of Zr in chloride environments.

ALLEGHENY LUDLUM AL276

Alloy Digest ◽  
1996 ◽  
Vol 45 (1) ◽  
Keyword(s):  
Corrosion Resistance ◽  
High Temperature ◽  
Power Plant ◽  
Physical Properties ◽  
Surface Treatment ◽  
Tensile Properties ◽  
Crevice Corrosion ◽  
Heat Treating ◽  
Chemical Plants ◽  
Temperature Performance

Abstract Allegheny Ludlum AL276 is widely used in the most severe environments found in chemical plants and in power plant desulfurization systems. The high molybdenum level with tungsten gives excellent pitting and crevice corrosion resistance. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on low and high temperature performance, and corrosion resistance as well as forming, heat treating, joining, and surface treatment. Filing Code: Ni-497. Producer or source: Allegheny Ludlum Corporation.

NILO ALLOY 36

Alloy Digest ◽  
1987 ◽  
Vol 36 (8) ◽  
Keyword(s):  
Thermal Expansion ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Surface Treatment ◽  
Constant Coefficient ◽  
Coefficient Of Thermal Expansion ◽  
Heat Treating ◽  
Temperature Performance ◽  
Iron Nickel

Abstract NILO alloy 36 is a binary iron-nickel alloy having a very low and essentially constant coefficient of thermal expansion at atmospheric temperatures. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Fe-79. Producer or source: Inco Alloys International Inc..

UNITEMP N-155

Alloy Digest ◽  
1971 ◽  
Vol 20 (12) ◽  
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Surface Treatment ◽  
Wide Temperature Range ◽  
Heat Treating ◽  
Combustion Chambers ◽  
Temperature Performance ◽  
Oxidation And Corrosion

Abstract UNITEMP N-155 is an iron-base austenitic alloy used over a wide temperature range from subzero to about 1800 or 1900 F. It has relatively good oxidation and corrosion resistance. It is used in such applications as turbine rotors, shafts and blades, afterburner parts, nozzles and combustion chambers. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness, creep, and fatigue. It also includes information on high temperature performance as well as forming, heat treating, joining, and surface treatment. Filing Code: Fe-48. Producer or source: Cyclops Corporation.

PYROTOOL A

Alloy Digest ◽  
1971 ◽  
Vol 20 (4) ◽  
Keyword(s):  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Surface Treatment ◽  
Tensile Properties ◽  
High Strength ◽  
Heat Treating ◽  
Good Ductility ◽  
Extrusion Dies ◽  
Temperature Performance

Abstract PYROTOOL A has been designed to display high strength and good ductility at temperatures up to 1200 F. It is used for high-temperature tooling, extrusion dies, liners, dummy blocks, forging dies, mandrels, holders, etc. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Fe-47. Producer or source: Carpenter.

UNISPAN LR35

Alloy Digest ◽  
1971 ◽  
Vol 20 (1) ◽  
Keyword(s):  
Thermal Expansion ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Surface Treatment ◽  
Tensile Properties ◽  
Coefficient Of Thermal Expansion ◽  
Heat Treating ◽  
Temperature Performance ◽  
Operational Level

Abstract UNISPAN LR35 offers the lowest coefficient of thermal expansion of any alloy now available. It is a low residual modification of UNISPAN 36 for fully achieving the demanding operational level of precision equipment. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and surface treatment. Filing Code: Fe-46. Producer or source: Cyclops Corporation.

ALCOA 6061 COLD FINISHED BAR

Alloy Digest ◽  
1998 ◽  
Vol 47 (6) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Surface Treatment ◽  
Tensile Properties ◽  
High Resistance ◽  
High Strength ◽  
Wire Rod ◽  
Good Workability

Abstract Alcoa 6061 alloy has excellent joining characteristics and good acceptance of applied coatings. It combines relatively high strength, good workability, and high resistance to corrosion. The alloy is widely available. The T8 and T9 tempers offer better chipping characteristics than the T6 temper. This datasheet provides information on composition, physical properties, and tensile properties. It also includes information on corrosion resistance as well as machining and surface treatment. Filing Code: AL-349. Producer or source: ALCOA Wire, Rod & Bar Division.

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