Esta es nuestra última selección de publicaciones y patentes mundiales en inglés sobre Fabricación Aditiva, entre muchas revistas científicas en línea, clasificadas y centradas en fabricación aditiva, impresión 3D, deposición fundida, sinterización, estereolitografía, impresión de metales, prototipado rápido, capa por capa y deposición de energía.
A Review on Synthesis, Design and Applications
Published on 2025-05-24 by Maria Pastrafidou, Evangelia C. Vouvoudi, Vassilios Binas, Ioannis A. Kartsonakis @MDPI
Abstract: Superabsorbent core/shell composite materials are a type of advanced materials presenting enhanced water absorption and retention capabilities. The central core material can swell and absorb water covered by a shell that serves a specific function. The composition and functionality of each layer can be tailored to improve the material’s performance. The core is typically fabricated from superabsorbent polymers such as sodium polyacrylate, poly(acrylic acid) or other hydrophilic mat[...]
Our summary: This review discusses the synthesis, design, and applications of superabsorbent core/shell composite materials, highlighting their tailored structure and potential for various fields. It also explores characterization techniques and future perspectives, including stimuli-responsive behavior and scalability.
superabsorbent, core/shell, composite materials, synthesis
Publication
Apparatus and process for ammonia cracking catalyst activation
Patent published on the 2025-05-22 in AU under Ref AU2024227784 by AIR PRODUCTS AND CHEMICALS INC (Shaw Andrew, Shelley Jacob, Xie Kui, Saloway Simon Craig, Patil Dhaval Dhondu)
Abstract: An apparatus and process for the activation of catalyst material utilized in ammonia cracking can include an initial use of hydrogen and heat to perform an initial stage of catalyst activation and a subsequent use of ammonia and heat to perform a subsequent state of catalyst activation. The subsequent use of ammonia can be configured so that different catalytic material at different plant elements are activated in a pre-selected sequence to provide activation of the catalytic material utilized i[...]
Our summary: Apparatus and process for activating catalyst material used in ammonia cracking, utilizing hydrogen and heat followed by ammonia and heat in a pre-selected sequence to avoid excess temperatures and sintering.
ammonia, cracking, catalyst, activation
Patent
Dynamic hydrogel compositions
Patent published on the 2025-05-22 in AU under Ref AU2023375461 by THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIV (D'aquino Andrea, Dong Changxin, Meany Emily, Williams Christian, Nguyen Leslee, Appel Eric, Song Ye Eun)
Abstract: Compositions and methods for delivery of therapeutic agents to an individual in need thereof, for prevention/reduction of tissue adhesion, and for 3D printing are disclosed herein. In some embodiments, the composition comprises octadecyl modified hydroxypropyl methylcellulose (HPMC-C18) and a surfactant or cyclic polysaccharide, wherein the composition is a hydrogel that exhibits dynamic properties.[...]
Our summary: Dynamic hydrogel compositions for delivery of therapeutic agents, prevention of tissue adhesion, and 3D printing.
hydrogel, compositions, delivery, therapeutic agents
Patent
Design Guide for Hybrid-Additive Manufacturing of Inconel 718 Combining PBF-LB/M and In Situ High-Speed Milling
Published on 2025-03-10 by David Sommer, Simon Hornung, Cemal Esen, Ralf Hellmann @MDPI
Abstract: As the correlation between design rules and process limitations is of the upmost importance for the full exploitation of any manufacturing technology, we report a design guide for hybrid-additive manufacturing of Inconel 718. Basic limitations need to be evaluated for this particular hybrid approach that combines laser powder bed fusion (PBF-LB/M) and in situ high-speed milling. Fundamental geometric limitations are examined with regard to the minimum feasible wall thickness, cylinders, overhang[...]
Our summary: Design guide for hybrid-additive manufacturing of Inconel 718 combining PBF-LB/M and in situ high-speed milling, Examination of geometric limitations, Derivation of design guidelines for reliable build process
hybrid-additive manufacturing, Inconel 718, PBF-LB/M, high-speed milling
Publication
Characterization and Modelling of Biomimetic Bone Through Additive Manufacturing
Published on 2025-03-10 by Niranjan Srinivasan, Mohsen Barmouz, Bahman Azarhoushang @MDPI
Abstract: The long-term success of bone implant scaffolds depends on numerous factors, such as their porosity, mechanical properties, and biocompatibility. These properties depend on the type of material, such as metals and their alloys or ceramics, and the procedure used to create the scaffolds. This study aims to find the biomimetic properties of aluminum 6061 (Al 6061) alloy through Digital Light Processing (DLP) and sintering. Hollow cylindrical Al 6061 samples are printed through the DLP process at 9[...]
Our summary: Long-term success of bone implant scaffolds depends on porosity, mechanical properties, and biocompatibility. Study aims to find biomimetic properties of Al 6061 alloy through DLP and sintering. Scaffold model created with anisotropic properties closer to trabecular bone.
Additive Manufacturing, Biomimetic Bone, Characterization, Modelling
Publication
Use of Biobased Resins Derived from Renewable Monomers for Sustainable 3D Fabrication Through Two-Photon Polymerization
Published on 2025-03-10 by Francisco Gontad, Jaime Cuartero, Sara Vidal, Nerea Otero, Natalia M. Schulz, Tobias Robert @MDPI
Abstract: This work demonstrates the fabrication of microstructures with formulations containing bio-based prepolymers derived from itaconic acid, commercial reactive diluents, photo initiators, and inhibitors, through two-photon polymerization. Lateral and vertical resolutions within the micron range can be achieved by the adjustment of laser scanning speed and pulse energy, and through the use of microscope objectives with high magnification and numerical aperture. The fabrication throughput can be slig[...]
Our summary: Fabrication of microstructures using biobased resins derived from renewable monomers through two-photon polymerization, achieving micron range resolutions and demonstrating feasibility for 3D microstructure fabrication.
Biobased Resins, Renewable Monomers, Two-Photon Polymerization, Microstructures
Publication
Machine Learning-Assisted Hardness Prediction of Dispersion-Strengthened Tungsten Alloy
Published on 2025-03-07 by Shaowu Dai, Chong Chen, Cong Zhang, Shizhong Wei, Beibei Han, Changji Wang, Kunming Pan, Liujie Xu, Feng Mao, Hua Yu @MDPI
Abstract: Hardness, as a typical mechanical property of dispersion-strengthened tungsten alloy, is influenced by various coupled factors. This paper aims to identify the key factors affecting the hardness of the dispersion-strengthened tungsten alloys with different carbides and oxides as the reinforcement phase in order to enable the high-throughput prediction of hardness. A dataset was established with alloy hardness as the target variable, and the features included the content of reinforcement phase, t[...]
Our summary: This paper utilizes machine learning to predict the hardness of dispersion-strengthened tungsten alloys by analyzing key factors such as the content of reinforcement phase, grain size, and relative density. The study establishes a dataset and trains regression models to construct a hardness prediction model, with a focus on random forest, support vector regression, and XGBoost regression models. The results show that the random forest model is the most suitable for predicting hardness, with R2 values of 0.93 and 0.80 for the training and test sets, and MAE values of 22.72 and 38.37.
Machine Learning, Hardness Prediction, Dispersion-Strengthened Tungsten Alloy, SHAP Analysis
Publication
Arc Erosion Properties of the Ag-Cr2AlC Contact Material
Published on 2025-03-07 by Xiaochen Huang, Jinlong Ge, Zijue Zhou, Bin Chen, Feng Zhuo, Hongdi Zhang @MDPI
Abstract: This study investigates the arc performance of Ag-Cr2AlC composite materials. Spark plasma sintering method was employed to prepare the Ag-Cr2AlC composite material. A self-made arc erosion device was utilized to erode the material with different times of arc. The surface of the material was categorized into three distinct areas: the eroded center area, the eroded edge area, and the heat-affected area. After one time of arc erosion, the material exhibits a relatively flat surface with a small er[...]
Our summary: Study on arc erosion properties of Ag-Cr2AlC composite material using spark plasma sintering method and self-made arc erosion device. Surface categorized into eroded center, eroded edge, and heat-affected areas. Material decomposes and oxidizes after multiple arc erosions, forming Ag2O, Al2O3, and Cr2O3. Breakdown current value stable at 20-35 A, breakdown strength varies between 3 × 106 V/m and 6 × 106 V/m before enhancing with ageing.
Ag-Cr2AlC, arc erosion, composite material, breakdown strength
Publication
