AMPP Store - Products tagged with 'molten salt corrosion'

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Corrosion Studies of Nickel-Based Alloys in Chloride Salts for Molten Salt Reactors

Product Number: 51323-19567-SG

Author: Kentaro Lunn, Nicholas Ury, Karla Sanchez, Harjot Singh, Kristopher Erlitz, Logan Gallegos, An Nguyen and Juan Nava, Vijay K. Vasudevan, Boateng Donkor, Sonali Ravikumar, G. Muralidharan, Jie Song, Steven Zinkle, Vilupanur Ravi

Publication Date: 2023

$20.00

Molten chloride salts are one of the leading candidates for heat transfer fluids and thermal energy storage for generation IV Molten Salt Reactors (MSRs). These chloride salts demonstrate many favorable properties such as low melting temperatures, high boiling points, high heat capacity, and low vapor pressure at higher temperatures. Ternary chlorides such as NaCl-KCl-MgCl2 used in this study are particularly attractive due to their lower melting points and high decomposition temperatures.

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Corrosion Studies of Novel Nickel-Base Alloys in Molten Chloride Salts

Product Number: 51324-21199-SG

Author: Harjot Singh; Diego Ochoa; Michael Kloesel; Vilupanur Ravi; Boateng Twum Donkor

Publication Date: 2024

$40.00

Molten salts are being considered for use in a new generation of nuclear reactors. Therefore, any materials selection process necessarily involves corrosion studies to understand the compatibility between the salts of interest and the materials of construction. This project investigated the corrosion behavior of novel Ni-base superalloys in molten chloride salt mixtures at 750°C for 200 hours in an inert atmosphere. Alloy response to the molten salt was examined through mass loss per unit area, analysis of surface phases and microstructural examination of the alloy cross-section along with elemental analysis. The role of critical alloying elements in alloy corrosion behavior was related to the material response to the molten salt. Alloy 6, an aluminum-containing alloy was the most corrosion resistant while Alloy 7, containing titanium additions, also did well. In the absence of these critical alloying elements, Alloy 4, proved to be the least corrosion resistant.

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Performance of Damaged Thermal Spray Coatings in Phase Change Materials (PCMs) Used in Geothermal Plants

Product Number: 51324-21060-SG

Author: Shiladitya Paul; Catherine Leahy

Publication Date: 2024

$40.00

In the landscape of transitioning to clean energy sources, geothermal energy is likely to be a key player in the energy mix. Geothermal energy technology has expanded its scope from primarily serving the electricity market to encompass a wider array of applications within the energy sector. This evolution includes sustainable heating and cooling solutions, making geothermal energy a dependable and cost-efficient source of renewable power, unaffected by weather conditions. However, corrosion poses a significant challenge in numerous geothermal facilities, exerting a considerable adverse influence on the economic viability of the geothermal sector. The capacity to engineer surfaces to combat corrosion represents a valuable tool for both engineers and plant operators, enhancing maintenance and repair practices. This paper explores the possibility of using thermal spray coatings on steel substrates and modify its corrosion behaviour in phase change materials (PCMs) used in geothermal plants. The selection of thermal spray coatings was guided by factors such as their documented performance, applicability, accessibility, and cost-effectiveness. The philosophy was to select coatings that were anodic to the substrate in molten PCM that would protect the substrate in case of any damage to the coating. Carbon steel substrate with thermal spray coatings of Al was prepared, artificial defect was created, and the specimen were exposed to molten nitrate-nitrite PCM at 165°C for 168h. After testing, the specimen was visually examined and detailed post-test characterisation [light and electron microscopy (SEM/EDX) etc] of surface and cross-sections was carried out. These measurements provided an indication of performance of the coatings and allowed further understanding of the mechanism of degradation of materials in nitrate-nitrite PCM in the presence of artificially-introduced through-thickness coating defect. The study showed that thermally sprayed aluminium (TSA) could provide a possible corrosion mitigation pathway for carbon steel structures in nitrate-nitrite based PCM systems even when damaged.

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Performance of Thermal Spray Coatings in Phase Change Materials (PCMs) used in Geothermal Plants

Product Number: 51323-18862-SG

Author: Shiladitya Paul, Catherine Leahy

Publication Date: 2023

$20.00

Geothermal energy has been an integral part of the renewable energy mix for several decades. The total installed geothermal power generation capacity by the end of 2021 was 15,854 MW. Despite the challenges imposed by the pandemic, new capability was developed, and capacity was added in several countries. The capacity was increased by 246 MW from the figure in 2020.4

Products tagged with 'molten salt corrosion'

Corrosion Studies of Nickel-Based Alloys in Chloride Salts for Molten Salt Reactors

Corrosion Studies of Novel Nickel-Base Alloys in Molten Chloride Salts

Performance of Damaged Thermal Spray Coatings in Phase Change Materials (PCMs) Used in Geothermal Plants

Performance of Thermal Spray Coatings in Phase Change Materials (PCMs) used in Geothermal Plants

Association for Materials Protection and Performance