X-ray Photoelectron Spectroscopy Investigation of Corrosion Behavior of ASTM C71640 Copper-Nickel Alloy in Seawater

CORROSION ◽  
1992 ◽  
Vol 48 (5) ◽  
pp. 404-410 ◽  
Author(s):  
R. Zanoni ◽  
G. Gusmano ◽  
G. Montesperelli ◽  
E. Traversa
Keyword(s):  
Nickel Alloy ◽  
Corrosion Behavior ◽  
Photoelectron Spectroscopy ◽  
X Ray ◽  
Copper Nickel ◽  
Copper Nickel Alloy

scholarly journals Surface Characterization and Corrosion Behavior of 90/10 Copper-Nickel Alloy in Marine Environment

Materials ◽  
2019 ◽  
Vol 12 (11) ◽  
pp. 1869 ◽  
Author(s):  
Tingzhu Jin ◽  
Weifang Zhang ◽  
Ning Li ◽  
Xuerong Liu ◽  
Lu Han ◽  
...  
Keyword(s):  
Nickel Alloy ◽  
Corrosion Behavior ◽  
Surface Characterization ◽  
Corrosion Current ◽  
Product Layer ◽  
Protective Oxide ◽  
Xiamen Bay ◽  
Copper Nickel ◽  
Protective Oxide Film ◽  
Copper Nickel Alloy

Surface characterization and corrosion behavior of 90/10 copper-nickel alloy in seawater from Xiamen bay at 30 °C for 56 days were investigated in this study. The results indicated that the corrosion product layer was mainly a mixture of CuO, Cu2O, and Cu(OH)2, with a transition to CuCl, CuCl2, and Cu2(OH)3Cl during the corrosion process. However, as corrosion proceeds, the resistance of the product film was reduced due to its heterogeneous and fairly porous structures, which led to local corrosion of the alloy. The corrosion potentials (Ecorr) increase while corrosion current densities (Icorr) decrease with time because of the formation of protective oxide film.

Influence of high-temperature aluminizing treatment on the corrosion resistance of 90/10 copper-nickel alloy

2021 ◽  
Vol 68 (5) ◽  
pp. 365-372
Author(s):  
Yuhang Gao ◽  
Xiaohong Chen ◽  
Ping Liu ◽  
Honglei Zhou ◽  
Shaoli Fu ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Aluminum Alloy ◽  
Nickel Alloy ◽  
Alloy Powder ◽  
Content Type ◽  
X Ray ◽  
Copper Nickel ◽  
Copper Nickel Alloy ◽  
Copper Aluminum ◽  
Aluminum Alloy Powder

Purpose This study aims to investigate the effect of coatings prepared by the addition of copper-aluminum alloy powder on the corrosion behavior of 90/10 copper-nickel alloy. Design/methodology/approach Coatings of copper-aluminum alloy powder at different contents (Wt.% = 50%, 60%, 70% and 80%) were prepared by the high-temperature heat treatment process. The microstructure and component of the coatings were characterized by scanning electron microscope, X-ray diffraction, energy dispersive spectrometer and X-ray photoelectron spectroscopy. The electrochemical properties of the coating were explored by electrochemical impedance spectroscopy. Findings The results show that the aluminized layer was successfully constructed on the surface of 90/10 copper-nickel alloy, the composition of the coating was composed of copper-aluminum phase and aluminum-nickel phase, the existence of the aluminum-nickel phase was formed by the diffusion of Ni elements within the substrate and because of the diffusion, the Al-Ni phase was distributed in the middle and bottom of the coating more. The Al-Ni phase is considered to be the enhanced phase for corrosion resistance. When the copper-aluminum alloy powder content is 70 Wt.%, the corrosion resistance is the best. Originality/value The enhancement of corrosion resistance of 90/10 copper-nickel alloy by the copper-aluminum alloy powder was revealed, the composition of the aluminized layer and the mechanism of corrosion resistance were discussed.

Effect of iron on the composition and structure of corrosion product film formed in 70/30 copper-nickel alloy

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Yanbo Zhu ◽  
Xiaohong Chen ◽  
Ping Liu ◽  
Shaoli Fu ◽  
Honglei Zhou ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Nickel Alloy ◽  
Corrosion Product ◽  
Content Type ◽  
X Ray ◽  
Corrosion Product Film ◽  
Copper Nickel ◽  
Composition And Structure ◽  
Product Film ◽  
Copper Nickel Alloy

Purpose This study aims to investigate the effect of changes in iron content in 70/30 copper–nickel alloy on the corrosion process. Design/methodology/approach 70Copper–30Nickel-xFe-1Mn (x = 0.4,0.6,0.8,1.0 Wt.%) alloy were prepared by the high frequency induction melting furnace. The scanning electron microscope, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and electrochemical impedance spectroscopy were used to analyze the morphology and component of the corrosion product film. Findings The results show that the corrosion resistance of 70/30 copper–nickel alloy added with 1.0%Fe is the best, and the film is divided into inner dense Cu2O composite film and outer hydration loose layer; XRD showed that after adding 1.0% Fe, the content of Cu2(OH)3Cl in the corrosion product film was significantly reduced, while the content of Cu2O remained unchanged; XPS showed that nickel accumulates in the inner layer of corrosion product film; the stage growth mode of the film, the role of nickel in it and the enrichment mechanism of iron in the inner film were summarized and discussed. Originality/value The changes in the composition and structure of the corrosion product film caused by the iron content are revealed, and the mechanism of the difference in corrosion resistance is discussed.

COPPER ALLOY No. C72600

Alloy Digest ◽  
1991 ◽  
Vol 40 (8) ◽  
Keyword(s):  
Physical Properties ◽  
Tensile Properties ◽  
Nickel Alloy ◽  
Copper Alloy ◽  
Cold Work ◽  
Heat Treating ◽  
Resistance Welding ◽  
Copper Nickel ◽  
Copper Nickel Alloy

Abstract Copper Alloy No. C72600 is a wrought copper-nickel alloy. It has excellent capacity for cold work and may be readily joined by soldering, brazing, arc and resistance welding. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fatigue. It also includes information on forming, heat treating, and joining. Filing Code: Cu-563. Producer or source: Copper and copper alloy mills.

DRIVER 180 ALLOY

Alloy Digest ◽  
1978 ◽  
Vol 27 (2) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Tensile Properties ◽  
Nickel Alloy ◽  
Electrical Resistance ◽  
Operating Temperature ◽  
Heat Treating ◽  
Specific Resistivity ◽  
Copper Nickel ◽  
Copper Nickel Alloy

Abstract DRIVER 180 ALLOY is a copper-nickel alloy for use where moderate electrical resistance is required. The number designation refers to its specific resistivity (180 ohms/cir mil/ft) which is combined with a fairly low coefficient of resistance (180 x 10^-6 per C). Its maximum recommended operating temperature is 1000 F. This datasheet provides information on composition, physical properties, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Cu-348. Producer or source: Wilbur B. Driver Company.

DRIVER 90 ALLOY

Alloy Digest ◽  
1977 ◽  
Vol 26 (11) ◽  
Keyword(s):  
Physical Properties ◽  
Tensile Properties ◽  
Nickel Alloy ◽  
Electrical Resistance ◽  
Operating Temperature ◽  
Heat Treating ◽  
Specific Resistivity ◽  
Copper Nickel ◽  
Copper Nickel Alloy

Abstract DRIVER 90 ALLOY is a copper-nickel alloy for use where only moderately low electrical resistance is required. The number designations refers to its specific resistivity (90 ohms/cir mil/ft) which is combined with a moderate coefficient of resistance. Its maximum recommended operating temperature is 800 F. This datasheet provides information on composition, physical properties, and tensile properties. It also includes information on forming and heat treating. Filing Code: Cu-343. Producer or source: Wilbur B. Driver Company.

OLIN ALLOY C72200

Alloy Digest ◽  
2006 ◽  
Vol 55 (7) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Shear Strength ◽  
Physical Properties ◽  
Tensile Properties ◽  
Nickel Alloy ◽  
Erosion Resistance ◽  
Heat Treating ◽  
Copper Nickel ◽  
Copper Nickel Alloy

Abstract Olin Alloy C72200 is a chromium-containing copper-nickel alloy used extensively in seawater. The alloy is used for its corrosion-erosion resistance and is often called Cupronickel with Cr. This datasheet provides information on composition, physical properties, elasticity, tensile properties, and shear strength. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: CU-745. Producer or source: Olin Brass.

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