High-entropy rare-earth zirconate ceramics with low …
61 Citations. Explore all metrics. Abstract. The high-entropy rare-earth zirconate ( (La 0.2 Nd 0.2 Sm 0.2 Gd 0.2 Yb 0.2) 2 Zr 2 O 7, 5RE 2 Zr 2 O 7 HEREZs) …
Rare‐Earth Zirconate Ceramics with Fluorite Structure for …
A series of rare-earth zirconate Ln2Zr2O7 ceramics (Ln=Dy, Er, and Yb) with a fluorite structure (F-Ln2Zr2O7) were prepared by pressureless sintering from zirconia and rare-earth oxide powders at 1600°C for 10 h in air. The microstructure experiments were performed by X-ray diffractometry (XRD) and scanning electron microscopy (SEM). The …
Rare earth oxide CeO2 enhanced reactive air brazing of YSZ ceramics …
Cerium oxide (CeO 2) in the range of 0–16 mol.% is used to enhance the joint of Ag-based filler for brazing yttria-stabilized zirconia (YSZ) ceramic in the air. Ag–CeO 2 filler is first adopted to braze YSZ ceramic (3 mol.% yttria). The CeO 2 is found to cluster at the interface of YSZ and Ag seam, improving the wetting behavior of Ag-based ...
Economics of rare earth elements in ceramic capacitors
See Full PDFDownload PDF. —Barium titanate (BaTiO 3) doped with rare-earth elements (REE) is used as dielectric in the manufacture of multilayer ceramic capacitors (MLCCs). The most common REE oxide employed as dopant for this application is Y 2 O 3. The behavior of the Y 3+ in the BaTiO 3 structure depends on its concentration and the ...
Thermophysical and electrical properties of rare‐earth‐cerate …
A new series of rare-earth-cerate high-entropy ceramics with compositions of (La 0.2 Nd 0.2 Sm 0.2 Gd 0.2 Dy 0.2) 2 Ce 2 O 7 (HEC1), (La 0.2 Nd 0.2 Sm 0.2 Gd …
Rare earth tungstate high-entropy ceramic powders …
A 2 W 3 O 12-type (A=La, Sm, Eu, Gd, RE) rare earth tungstate high-entropy ceramic powder with a positively charged surface was fabricated by a high-temperature solid-phase method, and its antibacterial and antiviral properties were evaluated for the first time.Changes in the antibacterial and antiviral activity and ionic solubility of these …
The Use of Rare Earths in Functional Ceramics
Rare earths are used in various types of functional ceramics, such as superconducting ceramics, piezoceramics, conductive ceramics, dielectric ceramics, and sensitive …
High‐entropy ferroelastic rare‐earth tantalite ceramic: …
First published: 24 May 2021. https://doi/10.1111/jace.17932. Citations: 31. Read the full text. PDF. Tools. Share. Abstract. In this study, high-entropy rare-earth tantalate …
Defect engineering in rare‐earth‐doped BaTiO3 ceramics: …
Journal of the American Ceramic Society (JACerS) is a leading ceramics journal publishing research across the field of ceramic and glass science and engineering. Abstract High-performance colossal-permittivity (CP) materials have huge potential applications in the miniaturization of electronic components and high-energy storage …
Application of Rare Earths in Advanced Ceramic Materials
These characteristics greatly expand the application scope of Al2O3 and Si3N4 ceramics'"-"' . 2.2 Application of rare earth oxides in non-oxide ceramics Rare earth oxides, such as Y203, CeO2, La203, and Nd203, are the main rare earth oxides used in non-oxide ceramics, playing roles of sintering aid to This is the background …
Hydrophobicity of rare-earth oxide ceramics | Nature …
Here we show that a class of ceramics comprising the entire lanthanide oxide series, ranging from ceria to lutecia, is intrinsically …
High‐entropy ferroelastic rare‐earth tantalite ceramic: …
In this study, high-entropy rare-earth tantalate ceramics (Y 0.2 Ce 0.2 Sm 0.2 Gd 0.2 Dy 0.2)TaO 4 ((5RE 0.2)TaO 4) have been successfully fabricated.The possibility of formation of (5RE 0.2)TaO 4 was verified via first-principles calculations. In addition, the phase structure, ferroelastic toughening mechanism, thermophysical, and …
Rare-earth-activated glass–ceramic waveguides
The inclusion of rare-earth elements, by allowing to combine photorefractive and active properties, may provide an effective route to the simple fabrication of integrated optics amplifiers and lasers. In this context we recently fabricated SiO 2 –SnO 2 glass–ceramic waveguides doped with 1 mol% of Eu 3+ with SnO 2 content as high as …
Structure and magnetism of novel high-entropy rare-earth …
In this study, novel high-entropy rare-earth iron garnet ceramics (Gd 0.2 Dy 0.2 Er 0.2 Y 0.2 RE 0.2) 3 Fe 5 O 12 (RE = Sm, Eu, Tm, Yb) were synthesised using a solid-phase method and their magnetic properties were evaluated. 2. Experimental procedure2.1. Preparation of high-entropy ceramics.
Ceramics International
Si 3 N 4 ceramics, due to their exceptional comprehensive performance, have potential applications in electronic products under the 5th generation mobile communication technology. However, their development is hindered by a lack of color variety and inherent brittleness. ... Rare earth metal (Re) oxides are used as a sintering additive to ...
Environmental degradation of high …
As the temperature requirements have increased, EBCs based on rare-earth (RE) monosilicates (RESi 2 O 5), disilicates (RE 2 Si 2 O 7), and their variations, are being developed. 12,13 While most ...
Rare Earth Oxide Applications in Ceramic Coatings for
Abstract. Ceramic coatings containing rare earth oxides (REO) play a critical role in enabling high performance and efficiency in gas turbines used for power generation and propulsion. To meet evolving performance constraints, current and next-generation coating architectures employ a wide range of material systems containing …
Using Rare Earth Oxides as Ceramic Colorants to Obtain Intense Colors
Published Dec 1, 2023. Ceramic stains make it possible to create glazes that fire to just about any color of the rainbow. But one drawback is that the glaze surfaces colored with ceramic stains often lack the depth of those glazes that use ceramic oxides. The lanthanide metals, also referred to as the " rare earths " can produce some cool ...
Hydrophobicity of rare-earth oxide ceramics
Rare-earth oxide ceramics should find widespread applicability as robust hydrophobic surfaces. Download PDF. Similar content being viewed by others. From superhydrophilicity to …
High-entropy rare-earth zirconate ceramics with low …
The high-entropy rare-earth zirconate ((La0.2Nd0.2Sm0.2Gd0.2Yb0.2)2Zr2O7, 5RE2Zr2O7 HEREZs) ceramics were successfully prepared by a new high-speed positive grinding strategy combined with solid-state reaction method. The microstructure, crystal structure, phase composition, and …
Study on Microstructure of Alumina Based Rare Earth Ceramic Composite
Analysis techniques such as SEM, TEM and EDAX were used to investigate the microstructure of rare earth reinforced Al 2 O 3 / (W, Ti)C ceramic composite. Chemical and physical compatibility of the composite was analyzed and interfacial microstructure was studied in detail. It is found that both Al 2 O 3 and (W, Ti)C phases are interlaced with ...
Rare earth zirconate (Re2Zr2O7) ceramic nanomaterials
Rare earth zirconate ceramic materials with the chemical formula Re 2 (or Ln 2) Zr 2 O 7, (where Re (Ln) is a lanthanide element or trivalent rare earth, (Dy, Gd, Nd, and La)) are a kind of ceramic materials with a generic pyrochlore structure.Recently, complex oxide structures with the chemical formula A 2 M 2 O 7, which can be in pyrochlore …
Rare earth cerate (Re2Ce2O7) ceramic nanomaterials
Lanthanide cerates (Ln 2 Ce 2 O 7) Lanthanide cerate is known as a solid solution of lanthanide oxide in cerium dioxide with defective fluorite structure (Cao et al., 2003 ). Lanthanide cerate ceramic systems with fluorite structure have attracted the attention of many researchers owing to their special electrical, catalytic, and mechanical ...
Rare Earth Metals at Cone 6
The rare earth metals, specifically the lanthanides, produce vibrant candy-like colors in ceramic glazes. Well, if you liked what you saw in that article, but you don't fire to cone 9 or 10, you will love today's post. In this excerpt from the Technofile in the Ceramics Monthly archive, Ryan Coppage, PhD gives the low down on rare earth ...
Rattler effect on the properties of multicomponent rare-earth …
The SEM images of RE 2 Zr 2 O 7 ceramics with different Yb 3+ doping content are displayed in Fig. 5.The calculated relative density is shown in Table 1.Due to the uncertainty of the distribution ratio of the rare-earth elements in the dual-phase sample x = 0.25, the theoretical density cannot be calculated accurately.However, according to the …
Designing high-entropy rare-earth zirconates with …
We highlight that the TEC of these high-entropy rare-earth zirconate ceramics increases with the decrease of electronegativity difference, and the thermal …
Yttria, rare-earth ceramic – Nanoe
Yttria is a rare-earth ceramic. Also called yttrium oxide, it is the only oxide with such strong thermal stability and is plasma resistant. It can also be made translucent. Like our other ceramic materials, the Yttria proposed …
High‐entropy ferroelastic rare‐earth tantalite ceramic: …
In this study, high‐entropy rare‐earth tantalate ceramics (Y0.2Ce0.2Sm0.2Gd0.2Dy0.2)TaO4 ( (5RE0.2)TaO4) have been successfully fabricated. The possibility of formation of (5RE0.2)TaO4 was ...
High-entropy Rare-earth Zirconate Ceramics …
In this work, we have successfully fabricated a novel high-entropy rare-earth zirconate (La 0.2 Nd 0.2 Sm 0.2 Gd 0.2 Yb 0.2 ) 2 Zr 2 O 7 (5RE 2 Zr 2 O 7 ) ceramics and its counterparts by using a ...
Smoothing method to directly denoise terahertz signals in rare‐earth
Journal of the American Ceramic Society (JACerS) is a leading ceramics journal publishing research across the field of ceramic and glass science and engineering. Abstract Rare-earth orthoferrites with weak ferromagnetism have become one of the most fascinating topics in antiferromagnet research because of their potential application in …