AMPP Store - Products tagged with 'electrochemical measurements'

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51318-10653-Corrosion performance of Cold Sprayed Tantalum Coatings

Product Number: 51318-10653-SG

Author: Shiladitya Paul / Phil McNutt

Publication Date: 2018

$20.00

Ta coatings were cold sprayed onto carbon steel and exposed to two different solutions: (i) synthetic seawater and (ii) aqueous 15% HCl to test the suitability to mitigate the corrosion of the substrate.

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51318-10836-Stability of buffer solutions for SSC test in stainless steel OCTG material from experimental approach

Product Number: 51318-10836-SG

Author: Yasuhide Ishiguro / Takashi Kawano / Kazuki Fujimura

Publication Date: 2018

$20.00

The stability of buffer solutions for martensitic stainless steel OCTG material was experimentally evaluated by the scratch repassivation technique in electrochemical measurements.

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51318-10944-Cathodic protection affected by stray current transients: Critical duration and amplitude

Product Number: 51318-10944-SG

Author: Mike Yongjun Tan / Ying Huo

Publication Date: 2018

$20.00

A research methodology has been employed to quantify the dynamic effects of anodic transients on CP and corrosion by means of an electrochemically integrated multi-electrode array, often referred to as the wire beam electrode (WBE).

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Corrosion Mechanisms Of Mild Steel In The Presence Of Formic And Acetic Acids

Product Number: 51322-17944-SG

Author: Sahithi Ayyagari, Maryam Eslami, Bruce Brown, Srdjan Nesic

Publication Date: 2022

$20.00

Corrosion is a surface phenomenon, which is defined as the deterioration of a material due to chemical and/ or electrochemical reactions. The continued interest in understanding corrosion phenomena and devising mitigation methods stems from the potential influence corrosion has on infrastructural damage across diverse industries. The most prevalent forms of corrosion encountered in the oil and gas industry are referred to as sweet and sour, corresponding to aqueous CO₂ and H₂S environments, respectively. The presence of an aqueous phase in these environments leads to the formation of a weak acid which is understood to be detrimental to the service life of carbon steel pipelines, when not properly mitigated.

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Effect of Acetic Acid on Corrosion Product Layer Formation in Aqueous CO2 Environments

Product Number: 51323-19306-SG

Author: Sahithi Ayyagari, Bruce Brown, Srdjan Nesic

Publication Date: 2023

$20.00

Several studies have focused in the past on the precipitation mechanism of iron carbonate (FeCO3), which is the dominant corrosion product in CO2 environments observed in the oil and gas industry. The dissolved CO2 species undergo a series of chemical reactions and react with the oxidized iron ions forming FeCO3 as the primary corrosion product. In the past, the thermodynamics of each of these reactions have been thoroughly studied and modified by incorporating the effects of temperature and non-ideality.

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Predictive Coating Condition Model For Coating Lifetime Under Environmental Stressors

Product Number: 51322-17685-SG

Author: Victoria Avance, Brandi Clark, Liam Agnew, Fritz Friedersdorf

Publication Date: 2022

$20.00

The corrosion of aircraft costs the U.S. Department of Defense billions of dollars annually and accounts for a significant portion of maintenance time and costs.1 Coatings are the most effective way to protect aircraft, but they have a finite lifetime and must be maintained or replaced before the underlying substrate is damaged by corrosion. Current aircraft maintenance practices call for coating inspections and maintenance based on elapsed time and not on measurements of coating health. Coating lifetime varies depending on the environmental stressors experienced in service, including temperature, humidity, and salt loading.

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Real-Time Measurement of Aerospace Organic Coating Condition and Performance in Atmospheric Corrosion Conditions

Product Number: 51324-20742-SG

Author: Victoria Avance; Rebecca Marshall; Fritz Friedersdorf; Matthew Repasky; Henry Yuchi

Publication Date: 2024

$40.00

The purpose of this work is to develop a predictive coating condition model that processes continuous coating condition measurements to characterize changes in coating protection in atmospheric laboratory and outdoor environments. Zero resistance ammeter measurements across an interdigitated electrode composed of two different aerospace materials were used to monitor the inhibitive ability of a scribed coating and detect loss of inhibitor protection. Results will be presented that demonstrate the ability of a stochastic model to detect loss of inhibitor protection and predict coating failure in comparison to observational results. A description of the samples, electrochemical measurements, and test environments will be reported along with the approach used to extract parameters to model and predict coating performance.

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Real-Time Measurement of Electrocoat, Powder Coat, and Organic Coatings for Atmospheric Galvanic Protection

Product Number: 51324-20945-SG

Author: Victoria Avance; Fritz Friedersdorf

Publication Date: 2024

$40.00

In this laboratory work, zero resistance ammeter measurements were used to collect galvanic corrosion measurements for scribed organic coating samples and e-coated samples in situ. For this work, a new sample design was derived from samples currently used in the automotive industry consisting of a base plate and a cover plate of another material to form a galvanic couple with a crevice between them. The samples were connected to a developmental test system that uses zero resistance ammeter (ZRA) measurements to collect galvanic corrosion rates for multiple samples in situ. E-coated samples were evaluated in accelerated corrosion tests for comparison with traditional organic coatings. A description of the samples, electrochemical measurement device, and methods for coating testing will be reported along with the analysis of the resulting data and its implications for evaluating various coating types.

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Real-time measurement of organic coating performance for atmospheric galvanic corrosion protection

Product Number: 51323-19036-SG

Author: Victoria Avance, Lindsay Davis, Brandi Clark, Fritz Friedersdorf

Publication Date: 2023

$20.00

The corrosion of aircraft costs the U.S. Department of Defense more than $20 billion annually and accounts for approximately 20% of all maintenance. Coatings are the most effective way to protect aircraft, but they have a finite lifetime and must be maintained or replaced before the underlying substrate is damaged by corrosion. Current aircraft maintenance practices call for coating inspections and repairs based on elapsed time and not on measurements of coating health.

Products tagged with 'electrochemical measurements'

Association for Materials Protection and Performance