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51316-7267-Impact of Microstructure on Hydrogen Solubility and Diffusivity in UNS 07718

Picture for Impact of Microstructure on Hydrogen Solubility and Diffusivity in UNS 07718
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To investigate the role of Cr and Cu in steels in different solutions, four kinds of low carbon steel with different Cr and Cu concentrations were prepared to investigate the effect of alloying elements on their corrosion behavior. Solutions of 3.5 wt.% NaCl, diluted hydrochloric acid and diluted sulphuric acid (pH=1.4-1.5) were used.

Product Number: 51316-7267-SG
ISBN: 7267 2016 CP
Author: Olesya Golenishcheva, Georg Andersohn, Matthias Oechsner, Jutta Kloewer
Publication Date: 2016
Industry: Materials Selection and Design
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Many researchers have reported the positive or negative effects of Cr and Cu addition on the corrosion behavior of steels. It is generally considered that Cr and Cu play different roles when the steels exposed to the different solution. The aim of this work is to investigate the role of Cr and Cu in steels in different solutions. In this study, four kinds of low carbon steel with different Cr and Cu concentrations were prepared in the laboratory, in order to investigate the effect of alloying elements on their corrosion behavior, solutions of 3.5 wt.% NaCl, diluted hydrochloric acid and diluted sulphuric acid (pH=1.4-1.5) were used, respectively. Electrochemical measurement and immersion test were performed at room temperature to characterize the corrosion behavior and evaluate the corrosion rate. Experimental results indicated that the corrosion resistance increased as a result of both Cr and Cu addition in 3.5 wt.% NaCl solution, while the corrosion resistance decreased as a result of Cr or Cu addition in acidic solution. In acidic solution, electrochemical impedance spectroscopy (EIS) revealed a capacitive semicircle in the high frequency range and an inductive loop in the low frequency range, the alloy elements of Cr and Cu exhibited a synergistic effect, leading to an increase in the corrosion rate of steel.

 

Key words: downloadable, low alloy steel, copper, chromium, acid solution, corrosion product

Many researchers have reported the positive or negative effects of Cr and Cu addition on the corrosion behavior of steels. It is generally considered that Cr and Cu play different roles when the steels exposed to the different solution. The aim of this work is to investigate the role of Cr and Cu in steels in different solutions. In this study, four kinds of low carbon steel with different Cr and Cu concentrations were prepared in the laboratory, in order to investigate the effect of alloying elements on their corrosion behavior, solutions of 3.5 wt.% NaCl, diluted hydrochloric acid and diluted sulphuric acid (pH=1.4-1.5) were used, respectively. Electrochemical measurement and immersion test were performed at room temperature to characterize the corrosion behavior and evaluate the corrosion rate. Experimental results indicated that the corrosion resistance increased as a result of both Cr and Cu addition in 3.5 wt.% NaCl solution, while the corrosion resistance decreased as a result of Cr or Cu addition in acidic solution. In acidic solution, electrochemical impedance spectroscopy (EIS) revealed a capacitive semicircle in the high frequency range and an inductive loop in the low frequency range, the alloy elements of Cr and Cu exhibited a synergistic effect, leading to an increase in the corrosion rate of steel.

 

Key words: downloadable, low alloy steel, copper, chromium, acid solution, corrosion product

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51316-7265-Corrosion Behavior of Cr and Cu Containing Low Alloys Steels in Solution

Product Number: 51316-7265-SG
ISBN: 7265 2016 CP
Author: Qiu Xu
Publication Date: 2016
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Four low carbon steels with different Cr and Cu concentrations were prepared to investigate the effect of alloying elements on their corrosion behavior in 3.5% NaCl solution diluted hydrochloric acid and dilute sulphuric acid (pH=1.4-1.5) respectively. Electrochemical measurement and immersion test at room temperature characterized the corrosion behavior and evaluated the corrosion rate.
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51316-7270-Electrochemical Corrosion Behavior of Niobium Alloys as Metallic Bio-Implants

Product Number: 51316-7270-SG
ISBN: 7270 2016 CP
Author: Wei Wang
Publication Date: 2016
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Mechanical properties and microstructure of Nb-Ta-Re, Nb-Re, Nb-Pd, and Nb-Pt alloys were studied by nano-indentation measurements and X-ray diffraction. Corrosion behavior was compared by electrochemical methods, including open circuit potential measurement, potentiodynamic, and electrochemical impedance spectroscopy.
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51316-7272-Electrochemical Study of Nb-10Ta-1Re and Ti-6Al-4V Alloys for Dental Implant Applications

Product Number: 51316-7272-SG
ISBN: 7272 2016 CP
Author: Wei Wang
Publication Date: 2016
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Dental implants are exposed to a wide range of pH values of saliva and different concentrations of fluoride. In this study, the effects of fluoride concentration and pH value on the corrosion behavior of Nb-10Ta-1Re and Ti-6Al-4V alloys in artificial saliva at 37°C were investigated by electrochemical measurements.
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