Esta es nuestra última selección de publicaciones y patentes mundiales en inglés sobre Gases Industriales, entre muchas revistas científicas en línea, clasificadas y centradas en gas industrial, acetileno, argón, hidrógeno, propano, butano, monóxido de carbono, neumática, corte por láser, máquinas de soldar, unidad de refrigeración, soldadura por gas, corte de metales y soplete de gas.
A Mechanism of Argon Arc Remelting of LPBF 18Ni300 Steel Surfaces
Published on 2025-04-18 by Xiaoping Zeng, Yehui Sun, Hong Zhang, Zhi Jia, Quan Kang @MDPI
Abstract: This study aims to reduce pores, cracks, and other defects on the surface of laser powder bed fusion (LPBF)-fabricated 18Ni300 steel and improve its surface quality. Remelting was carried out on the surface with an argon arc as the heat source. Then, the surface layer was characterized using SEM, EDS, XRD, EBSD, and hardness testing. The results showed the following: When the pulse current I increased from 16 A to 20 A, the surface hardness of LPBF 18Ni300 increased due to a decrease in defects [...]
Our summary: This study investigates the mechanism of argon arc remelting on the surfaces of LPBF 18Ni300 steel to improve surface quality and hardness. Results show that increasing pulse current enhances surface hardness by reducing defects and increasing martensite phase, while excessive current can introduce new defects and decrease hardness. Factors affecting hardness include pore weakening, phase transformation strengthening, grain refinement strengthening, and texture strengthening.
argon arc remelting, LPBF 18Ni300 steel, surface quality, hardness testing
Publication
High-Quality Preparation of Energy-Containing Microspheres with Cross-Scale Particle Size
Published on 2025-03-31 by Jiang Liu, Hairui Bian, Guoqiang Yu, Jiachao Zhang, Yaozheng Wang, Dang Ding, Ning Sang, Fangsheng Huang @MDPI
Abstract: Microfluidic granulation technology enables high-quality production of energy-containing microspheres, significantly enhancing both performance and safety. Although microfluidic methods allow control over microsphere particle size, the adjustment range remains limited; low yield and process discontinuity also restrict broader application in the synthesis of energy-containing materials. This paper presents a microfluidic granulation system for energy-containing materials utilizing pulsed pneumati[...]
Our summary: High-quality production of energy-containing microspheres with cross-scale particle size using microfluidic granulation technology, enabling wide particle size adjustment and efficient energy material loading.
Microfluidic, Granulation, Energy-containing, Microspheres
Publication
Numerical Assessment of the Combustion of Methane–Hydrogen–Air Mixtures in Micro-Scale Conditions
Published on 2025-03-09 by C�sar Nieto-Londo�o, Wilber Silva-L�pez, Natalia G�mez-Vel�squez @MDPI
Abstract: Methane–hydrogen–air mixtures present a viable alternative to conventional fuels, reducing CO2 emissions while maintaining high energy density. This study numerically investigates their combustion characteristics in millimeter-scale reactors, focusing on flame stabilisation and combustion dynamics in confined spaces. A species transport model with volumetric reactions incorporated a detailed kinetic mechanism with 16 species and 41 reactions. The simulations employed [...]
Our summary: Study investigates combustion characteristics in millimeter-scale reactors, focusing on flame stabilisation and combustion dynamics. Key parameters include equivalence ratio, hydrogen volume fraction, inlet velocity, and gas pressure. Results show hydrogen enrichment enhances flame stability and combustion efficiency, with optimal performance over 40% hydrogen content.
Numerical Assessment, Combustion, Methane-Hydrogen-Air Mixtures, Micro-Scale Conditions
Publication
Effect of HCl Concentration
Published on 2025-03-09 by Ana L. Mart�nez-Salazar, Luciano Aguilera-V�zquez, Pedro M. Garc�a-Vite, Nelson Rangel-Valdez, Carlos Vega-Ort�z, Marco A. Coronel-Garc�a @MDPI
Abstract: The current high cost of producing green hydrogen, for use as an energy vector, has motivated the search for the development of non-conventional technologies for its production, joining forces on the path towards energy transition. Hydrogen production by aluminum corrosion in aqueous acid solutions seems to be a promising alternative. In order to evaluate its technical feasibility, a kinetic study was carried out, analyzing the impact of HCl concentration (1.125 to 1.75 M) on the aluminum corros[...]
Our summary: Impact of HCl concentration on aluminum corrosion kinetics analyzed through experimental runs, proposing modified models for better fit with data, enabling continuous reactor designs for green hydrogen production.
HCl concentration, green hydrogen, aluminum corrosion, kinetic study
Publication
Adaptive Sliding Mode Control of an Interleaved Buck Converter–Proton Exchange Membrane Electrolyzer for a Green Hydrogen Production System
Published on 2025-03-09 by Mohamed Koundi, Hassan El Fadil, Abdellah Lassioui, Yassine El Asri @MDPI
Abstract: This paper presents an advanced Adaptive Sliding Mode Control (ASMC) strategy, specifically developed for a hydrogen production system based on a Proton Exchange Membrane electrolyzer (PEM electrolyzer). This work utilized a static model of the PEM electrolyzer, characterized by its V-I electrical characteristic, which was approximated by a linear equation. The ASMC was designed to estimate the coefficients of this equation, which are essential for designing an efficient controller. The primary [...]
Our summary: Advanced ASMC strategy for PEM electrolyzer-based hydrogen production system, Designed to ensure stability and efficiency, Demonstrated through simulations and experimental results.
Adaptive Sliding Mode Control, Interleaved Buck Converter, Proton Exchange Membrane Electrolyzer, Green Hydrogen Production System
Publication
Rheological Properties of Functionalized Smart Resins for Transport Applications
Published on 2025-03-07 by Giorgia De Piano, Raffaele Longo, Liberata Guadagno, Roberto Pantani @MDPI
Abstract: Hydrogen is a promising alternative to fossil fuels, but its efficient storage presents significant challenges. Polymer composite vessels, especially those made from carbon fiber-reinforced plastic (CFRP), are gaining attention, due to their high strength-to-weight ratio for storing compressed or cryogenic hydrogen. The latest Type V tanks, which lack internal liners, rely solely on fiber composites for both structural integrity and gas containment, enhancing the storage volume-to-weight ratio a[...]
Our summary: Polymer composite vessels made from CFRP offer high strength-to-weight ratio for hydrogen storage. Epoxy resins with nanofillers enhance gas barrier properties and mechanical capabilities. Study focuses on optimizing physical properties of epoxy-based composites for Type V tanks.
rheological properties, functionalized smart resins, hydrogen storage, epoxy-based composites
Publication
Molecular design of electroactive species and materials processing methods in organic redox flow batteries
Patent published on the 2025-03-06 in WO under Ref WO2025050122 by BIOZEN BATTERIES INC [US] (Rengert Zachary David [us], Jones Seamus Dylan Summerville [us], Kirchhofer Nathan Daniel [us])
Abstract: A composition of matter useful as a posolyte or negolyte in a redox flow battery, including a compound comprising a first electroactive moiety and one or more solubilizing moieties each connected to the first electroactive moiety directly or via linker moieties, wherein the linker moieties, when present each comprise carbon and could contain at least one of hydrogen, oxygen, nitrogen, sulfur, or silicon.[...]
Our summary: Composition of matter for redox flow batteries with electroactive and solubilizing moieties connected by linker moieties containing carbon and other elements.
molecular design, electroactive species, materials processing, organic redox flow batteries
Patent
Hydrogenated polymers produced using antioxidant, and rubber compositions incorporating same
Patent published on the 2025-03-06 in WO under Ref WO2025049846 by MAGISTRELLI JEFFREY M [US] (Hue Ryan J [us], Magistrelli Jeffrey M [us])
Abstract: Embodiments of the present disclosure are directed to hydrogenated functionalized polymers produced from the steps of: producing a living polymer from the anionic polymerization of a conjugated diolefin monomer in the presence of a solvent; producing a functionalized polymer by reacting the living polymer with at least one silane modifier; adding an antioxidant to the functionalized polymer in the solvent; and producing the hydrogenated functionalized polymer by hydrogenating the functionalized [...]
Our summary: Production of hydrogenated functionalized polymers from anionic polymerization of conjugated diolefin monomer, reaction with silane modifier, addition of antioxidant, and hydrogenation with catalyst, resulting in degree of hydrogenation of at least 75 mol% measured by 1H NMR.
hydrogenated polymers, antioxidant, rubber compositions, anionic polymerization
Patent
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