This is our latest selection of worldwide publications and patents in english on Rare-Earth Elements, between many scientific online journals, classified and focused on rare-earth element, scandium, yttrium, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, rare earth and rare-earth.
Microstructure and Thermal Analysis Kinetics of Y2Hf2O7/Y3Al5O12 Composites Prepared by Solution Combustion Synthesis
Published on 2025-04-15 by Rui Li, Shengyue Gu, Yimin Guo, Bei Xue, Qian Zhou, Ruimei Yuan, Longkang Cong, Yaming Zhang @MDPI
Abstract: With the development of high-speed and high-temperature equipment, thermal barrier materials are facing increasingly harsh service environments. The addition of YAG to Y2Hf2O7 has been proposed in order to improve its long-term high-temperature performance. In this work, Y2Hf2O7/Y3Al5O12 composite powders were synthesized by combustion synthesis with urea, glycine, EDTA, citric acid, and glucose as fuels, while hafnium tetrachloride, yttrium nitrate hexahydrate, and aluminum nitrate nonahydrate [...]
Our summary: Y2Hf2O7/Y3Al5O12 composites prepared with various fuels were analyzed for their morphology, phase composition, and thermal behavior. The addition of YAG to Y2Hf2O7 improved its high-temperature performance. Urea was found to be the most suitable fuel for the synthesis process, resulting in uniform distribution of grains and lower activation energies.
Microstructure, Thermal Analysis, Kinetics, Solution Combustion Synthesis
Publication
YTaO4/Y₂Zr₂O₇ Dual-Phase Ceramics with Enhanced Vickers Hardness, Fracture Toughness and High Thermal Expansion Properties for Thermal Barrier Coating Applications
Published on 2025-03-11 by Ziyang Ruan, Zifan Zhao, Jing Feng @MDPI
Abstract: Rare-earth tantalates (RETaO4) are considered as a type of emerging thermal barrier coating materials applied to the hot components of gas turbines and aerospace engines due to their excellent thermal stability, high-temperature fracture toughness, corrosion resistance and extremely low thermal conductivity. However, the relatively low hardness and thermal expansion coefficients may limit their service lifetime in a harsh engine environment. To address the current limitation of rare-earth tantal[...]
Our summary: Rare-earth tantalates (RETaO4) are excellent thermal barrier coating materials for gas turbines and aerospace engines. Introducing YTaO4/YZrO7 dual-phase ceramics significantly enhances mechanical and thermal properties, making them ideal for thermal barrier coating applications.
Dual-Phase Ceramics, Vickers Hardness, Fracture Toughness, Thermal Expansion
Publication
Microstructure and Cracking Behavior of a Four-Layer Thermal Barrier Coating After Thermal Cycle Test
Published on 2025-03-06 by Xuyang Wang, Yanna Cui, Yang Zhou, Yuzhu Zhao, Jun Wang @MDPI
Abstract: Microstructure evolution and cracking behavior of a four-layer thermal barrier coating (TBC) with double YSZ layers during thermal cycle tests were studied in the current work. The temperature range of the thermal cycle test ranged from room temperature to 1100 °C under atmospheric conditions. The TBC consisted of tetragonal t′ and t phases as well as monoclinic yttrium oxide. After 500 thermal cycles, the m-ZrO2 phase was formed through the phase transformation from t&[...]
Our summary: Study on microstructure evolution and cracking behavior of a four-layer thermal barrier coating with double YSZ layers during thermal cycle tests. Formation of m-ZrO2 phase and bulk thermally grown oxides around pores in the transition layer. Analysis of crack formation and porosity reduction in the TBC structure after the test.
thermal barrier coating, microstructure, cracking behavior, thermal cycle test
Publication
Effects of a Welding Wire Containing Er or Sc on the Microstructure, Mechanical Properties, and Corrosion Resistance of the 5xxx Aluminum Alloy MIG Joint
Published on 2025-03-06 by Cunwei Zou, Ruizhi Wu, Xinhe Yang, Zhikun Ma, Legan Hou @MDPI
Abstract: The development of MIG (metal inert gas) welding for five-series aluminum alloys primarily involves the improvement and optimization of welding processes. Building upon research findings regarding the enhancement of aluminum alloy properties through the use of scandium (Sc) and erbium (Er), our study incorporates Sc and Er into the welding wire to examine their impact on welding quality. The results show that the introduction of Er and Sc results in grain refinement from 47 µm to 2[...]
Our summary: Impact of Er and Sc on 5xxx Aluminum Alloy MIG Joint: Grain refinement, enhanced mechanical properties, improved corrosion resistance.
welding wire, microstructure, mechanical properties, corrosion resistance
Publication
A Study of the Hall Effect on Doped and Undoped Praseodymium Nickelate Perovskite Thin Films and the Impact of the Reduction Process
Published on 2025-03-01 by Alex Misiak, Mufeed Keenari, Yohann Breard, Wilfrid Prellier, Alain Pautrat, Adrian David @MDPI
Abstract: PrNiO3 and Pr0.8Sr0.2NiO3 epitaxial thin films were deposited by pulsed laser deposition (PLD) on different substrates and studied for Hall effect and resistivity behavior. Conductive behavior is observed in the doped composition, and a normal Hall effect allows to determine charge carrier’s density and mobility. The doped compositions show a high concentration of charge carriers (≈1023 cm−3 at 300 K), and it appears that they can be controlled by the st[...]
Our summary: Study of Hall Effect on Doped and Undoped Praseodymium Nickelate Perovskite Thin Films, Impact of Reduction Process, Enhancement of Transport Properties
Hall Effect, Doped, Praseodymium Nickelate, Thin Films
Publication
Effect of Holding Temperature on Wear and Corrosion Resistance of Rare Earth Oxide Thermally Diffused Zinc Coatings
Published on 2025-03-01 by Ruolei Chen, Wei Liu, Zeyang Wang, Biao Xie, Zeng Yi, Zhiyuan Wang, Jingwei Xiao, Jian Gu, Kaiming Wang @MDPI
Abstract: The challenging wind conditions surrounding power transmission lines exacerbate the wear and corrosion of transmission line fittings. Thermal diffusion galvanizing technology, a novel method for obtaining galvanizing layers, significantly enhances the wear and corrosion resistance of metal components, thereby extending their service life. Holding temperature plays a critical role in determining the performance of the thermally diffused zinc coating. In this study, we prepared thermally diffused [...]
Our summary: Effect of Holding Temperature on Wear and Corrosion Resistance of Rare Earth Oxide Thermally Diffused Zinc Coatings. Thermal diffusion galvanizing technology significantly enhances the wear and corrosion resistance of metal components. Increasing the holding temperature enhances the diffusion of zinc and iron, yielding thicker coatings.
thermal diffusion, wear resistance, corrosion resistance, holding temperature
Publication
Quantum repeater for optical network and method
Patent published on the 2025-02-19 in GB under Ref GB2632741 by NANOFIBER QUANTUM TECH INC [JP] (Akihisa Goban [jp], Shinya Kato [jp], Ryotaro Inoue [jp], Takao Aoki [jp])
Abstract: A quantum repeater system comprising one or more intermediary repeater devices, each of the repeater devices comprising: a first fiber optical cable having first and second end regions, first and second fiber Bragg gratings configured on the first and second end regions respectively, a nanofiber region configured from a center portion of the fiber optic cable and coupled between the first end region and second end region, a first and second tapered region configured between the nanofiber region [...]
Our summary: Quantum repeater system with intermediary devices, fiber optic cables, tapered regions, and evanescently coupled atoms for distributing quantum entanglement between repeaters.
quantum repeater, optical network, fiber Bragg gratings, nanofiber region
Patent
