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View article: Additive manufacturing of high‐density silicon carbide ceramics through post‐processing spark plasma sintering
Additive manufacturing of high‐density silicon carbide ceramics through post‐processing spark plasma sintering Open
This research advances the field of additive manufacturing (AM) of silicon carbide (SiC) ceramics by integrating spark plasma sintering (SPS) to enhance material density, mechanical strength, and thermal properties. Traditional AM techniqu…
View article: Insights into oxygen diffusion in rare earth disilicate environmental barrier coatings
Insights into oxygen diffusion in rare earth disilicate environmental barrier coatings Open
Environmental barrier coatings (EBC) are crucial for the use of SiC-based ceramic matrix composites in high-temperature combustion environments, yet knowledge of oxygen diffusion in these coatings is limited. This study investigates oxygen…
View article: Investigation of the Mechanical Degradation of Zinc-Based Cold Spray Coatings for Steel Pipelines
Investigation of the Mechanical Degradation of Zinc-Based Cold Spray Coatings for Steel Pipelines Open
Internal corrosion in wet natural gas is a big challenge in the oil and gas industry due to corrosive constituents such as carbon dioxide (CO2), hydrogen sulfide (H2S), other forms of sulfur, and water in the gas stream. To mitigate intern…
View article: Corrosion Behavior of Hydrophobic Coatings in Aqueous CO2 Environments
Corrosion Behavior of Hydrophobic Coatings in Aqueous CO2 Environments Open
Internal corrosion is caused by gas impurities such as CO2, moisture, and H2S, leading to material degradation. To combat this, the National Energy Technology Laboratory (NETL) developed a novel hydrophobic coating to reduce surface hydrop…
View article: Creep Degradation of Austenitic Steels in CO2 Environments
Creep Degradation of Austenitic Steels in CO2 Environments Open
Steels have a proven track record of safe operation in steam power plants for decades. Interest in developing supercritical CO2 power cycles as a more efficient and sustainable alternative to steam cycles has driven a need to understand st…
View article: Creep Behavior of Austenitic Steels in CO2 and the Effect of Specimen Thickness
Creep Behavior of Austenitic Steels in CO2 and the Effect of Specimen Thickness Open
Steels have a proven track record of safe operation in steam power plants for decades. Interest in developing supercritical CO2 power cycles as a more efficient and sustainable alternative to steam cycles has driven a need to understand st…
View article: Phase-Field Modeling of Thermally-Grown Oxide and the Induced Damage Evolution in Environmental Barrier Coatings
Phase-Field Modeling of Thermally-Grown Oxide and the Induced Damage Evolution in Environmental Barrier Coatings Open
The advent of next-generation hydrogen-based engines necessitates materials capable of withstanding temperatures beyond the reach of current superalloys. SiC-based ceramic matrix composites, augmented with environmental barrier coatings (E…
View article: Phase-Field Modeling of Mechanical Damages in Ceramic Matrix Composites
Phase-Field Modeling of Mechanical Damages in Ceramic Matrix Composites Open
Developed a phase-field model for mechanical damages in CMCs, which incorporates the CMC microstructures, matrix cracking, fiber breakage, and interfacial sliding. Two types of mechanisms, fiber bridging and fiber pull-out, are considered.…
View article: High-Temperature Oxidation Behavior of Wrought and Additive Manufactured H282 in Direct-Fired Supercritical CO2 Power Cycle Environments
High-Temperature Oxidation Behavior of Wrought and Additive Manufactured H282 in Direct-Fired Supercritical CO2 Power Cycle Environments Open
Materials selection is a key concern for corrosion resistance in high temperature and pressure direct-fired supercritical CO2 power cycles. The effect of elevated pressure on corrosion resistance can be critical, as impurities within the s…
View article: Environmental Compatibility Issues for Ni-Based Alloys in Direct-Fired Supercritical CO2 Power Cycles
Environmental Compatibility Issues for Ni-Based Alloys in Direct-Fired Supercritical CO2 Power Cycles Open
Direct-fired supercritical CO2 (sCO2) power cycles offer potential for high-efficiency power generation from natural gas and other fossil fuels with built-in carbon capture. Ni-based superalloys are the leading candidates for the hottest p…
View article: Monitoring the corrosion resistance of cold-spray coatings with membrane-based sensors
Monitoring the corrosion resistance of cold-spray coatings with membrane-based sensors Open
In this presentation, the MBES shows the ability to detect the change in exposed environment even with cold-spray coatings. Corrosion rates from the cold-spray coating were comparable to a 316 stainless steel sample. Defects in the coating…
View article: Corrosion of Zinc Cold Spray Coatings in a Wet Sweet and Sour Gas Environment
Corrosion of Zinc Cold Spray Coatings in a Wet Sweet and Sour Gas Environment Open
Internal corrosion is a problem for steel pipelines transporting natural gas or CO2 containing water and partial pressures of H2S higher than 0.3 kPa (0.05 psi). This work aims to mitigate internal corrosion in steel pipelines transporting…
View article: Design and Evaluation of Environmental Barrier Coatings for Protection of Ceramic Matrix Composites in Hydrogen-Based Turbines
Design and Evaluation of Environmental Barrier Coatings for Protection of Ceramic Matrix Composites in Hydrogen-Based Turbines Open
This presentation at the 2024 FECM Spring Project Review Meeting summarizes ongoing work at NETL aimed at enabling the use of ceramic matrix composite (CMC) materials in next-generation high-efficiency power generation turbines fueled by h…
View article: High-Temperature Oxidation Behavior of Wrought and Additive Manufactured Ni-based Alloys in Direct-Fired Supercritical CO2 Power Cycle Environments
High-Temperature Oxidation Behavior of Wrought and Additive Manufactured Ni-based Alloys in Direct-Fired Supercritical CO2 Power Cycle Environments Open
Materials selection is a key concern for corrosion resistance in elevated temperature and pressure direct-fired supercritical CO2 (sCO2) power cycles. Herein, the wrought product form of alloy H282, as well as several additional nickel-bas…
View article: Microstructure and Chemical Composition of Al2O3-, Cr2O3- and MgO-rich Refractories Exposed to Plastic Ashes
Microstructure and Chemical Composition of Al2O3-, Cr2O3- and MgO-rich Refractories Exposed to Plastic Ashes Open
Plastics are widely integrated with today’s lifestyle due to their low cost, durability, lightweight, water resistance, and flexibility. However, tremendous plastic waste cause severe threats to the environment. Thus, sustainable recycling…
View article: Phase-Field Model Incorporating Large Inelastic Strain with Application to the Oxidation of High-Temperature Coating Systems
Phase-Field Model Incorporating Large Inelastic Strain with Application to the Oxidation of High-Temperature Coating Systems Open
Structural metallic and ceramic materials at high temperatures often suffer from creep, fatigue and oxidation, which typically involves local large inelastic strain. The large strain is usually approached by Lagrangian-description-based fi…
View article: Corrosion Behavior of Zinc Cold Spray Coatings (ZnCr & ZnNb) in a Simulated Natural Gas Environment Containing H2O, CO2, and H2S
Corrosion Behavior of Zinc Cold Spray Coatings (ZnCr & ZnNb) in a Simulated Natural Gas Environment Containing H2O, CO2, and H2S Open
For presentation at, and publication in the proceedings of, the AMPP Annual Conference + Expo 2024, New Orleans, LA, March 3-7, 2024.
View article: Corrosion Behavior of Zinc Cold Spray Coatings in a Simulated Natural Gas Environment Containing H2O, CO2, and H2S
Corrosion Behavior of Zinc Cold Spray Coatings in a Simulated Natural Gas Environment Containing H2O, CO2, and H2S Open
The natural gas transmission pipeline network in the U.S. consists of approximately 300,000 miles, is made mainly of carbon steel, and was installed in the 1950s and 1960s. Understanding the pipeline steel behavior in natural gas will info…
View article: Effect of Silicon on High Temperature Oxidation of Fe-Cr-Si Alloys in Carbon Dioxide Environments
Effect of Silicon on High Temperature Oxidation of Fe-Cr-Si Alloys in Carbon Dioxide Environments Open
Supercritical carbon dioxide offers the potential for efficient and sustainable power generation. Identifying materials that can be used to construct the high temperature portions of the cycle is a barrier to developing this technology. Va…
View article: Investigation of the Hydrogen Embrittlement of API 5L Natural Gas Pipeline Steels
Investigation of the Hydrogen Embrittlement of API 5L Natural Gas Pipeline Steels Open
Hydrogen produced during corrosion or through hydrogen blending into natural gas pipelines can lead to the degradation of ductility of metals used in these transmission pipelines. The effect of hydrogen on the mechanical properties of pipe…
View article: Effect of Minor Ce Additions on Corrosion Behavior of Experimental Pipeline Steel
Effect of Minor Ce Additions on Corrosion Behavior of Experimental Pipeline Steel Open
Minor additions of rare earth elements (REEs) have been shown to improve various steel properties. In particular, Cerium (Ce), as a relatively abundant and inexpensive element, has received attention as a potentially beneficial minor alloy…
View article: High-Temperature Oxidation Behavior of Wrought and Additive Manufactured Alloys in Direct-Fired Supercritical CO2 Power Cycle Environments
High-Temperature Oxidation Behavior of Wrought and Additive Manufactured Alloys in Direct-Fired Supercritical CO2 Power Cycle Environments Open
Materials selection is a key concern for corrosion resistance in elevated temperature and pressure direct-fired supercritical CO2 (sCO2) power cycles. The effect of elevated pressure on corrosion resistance can be critical, as impurities w…
View article: Influence of Rare Earth Ce Additions on Microstructure and Mechanical Properties of Experimental Pipeline Steels
Influence of Rare Earth Ce Additions on Microstructure and Mechanical Properties of Experimental Pipeline Steels Open
Herein, the effect of Ce additions ranging from 57 to 263 ppm is evaluated for an experimental pipeline steel. Compared to the Ce‐free steel, progressive Ce additions result in a slightly refined microstructure, significantly improve trans…