CRYSTAL GROWTH & DESIGN
·
2022
·
IF 4.01
Zeyu Cheng,Hao Ren,Yazhao Wang,Shengdi Ta,Peng Zhang,Yuhua Yang,Shoulei Xu,Bernard Albert Goodman,Wen Deng
Large-size and high-quality stable ZrO2 single crystals containing x mol % Yb2O3 (x = 7, 8, 9, 10) (denoted as xYbSZ), and 8YbSZ crystals doped with 0.5 mol % Er2O3 were grown by the optical floating zone (OFZ) method. Yb3+ was indicated by XRD and Raman spectroscopy to have successfully entered into the ZrO2 lattice, which was stabilized in the cubic phase when the concentration of Yb2O3 was ≥8 mol %. Er3+ successfully entered the 8YbSZ lattice, and its spectral absorption intensity was enhanced compared to Er3+ in the corresponding yttria-stabilized zirconia (8YSZ), thus demonstrating that the Yb3+ ion has an excellent sensitizing effect on the up-conversion luminescence of Er3+. Fluorescence decay curves show that the up-conversion luminescence excited state lifetime of Er3+ is significantly enhanced in 8YbSZ compared to 8YSZ. Thus, these results demonstrate that Yb3+ ions not only successfully stabilize ZrO2 in the cubic phase structure but also maintain their role as an up-conversion luminescence sensitizer for Er3+ ions.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2023
·
IF 5.7
Liang Zhou,Jianbao Hu,Yunhui Zhang,Min Tan,Chunjing Liao,Han Luo,Yanmei Kan,Xiangyu Zhang,Jinshan Yang,Xiaowu Chen,Shaoming Dong
The phase transition of thermally grown oxide (TGO) has been proven to be an important factor affecting the durability of EBCs. Yb 2 O 3 and Yb 2 SiO 5 can react with silica to form silicate, which can reduce the TGO thickness and extend the lifetime of EBCs. In this paper, the Yb 2 SiO 5 -Yb 2 O 3 -Si-SiC ceramic was prepared by tape casting combined with silicon reactive melt infiltration. The oxidation properties of the ceramic were evaluated at 1200–1400 °C. With the increase in temperature, the content of SiO 2 in the oxide layer decreased and the content of Yb 2 Si 2 O 7 increased. A dense and continuous Yb 2 Si 2 O 7 layer was formed at 1400 °C. Yb 2 Si 2 O 7 is formed at the edge of Yb 2 SiO 5 , then Yb 3+ diffuses outwards, Si 4+ diffuses inwards and gradually forms Yb 2 Si 2 O 7 from the outside to the inside.
研究领域:
材料科学
·
陶瓷工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2024
·
IF 5.8
Liang Zhou,Jianbao Hu,Yunhui Zhang,Le Gao,Wang Yuan,Han Luo,Yanmei Kan,Xiangyu Zhang,Jinshan Yang,Bin Wu,Xiaowu Chen,Shaoming Dong
To reduce the influence of TGO on EBCs performance, the Yb 2 SiO 5 -Yb 2 O 3 -Si-SiC ceramic was prepared by tape casting and reactive melt infiltration in this paper. During high-temperature water vapor corrosion, the ceramic formed a unique layered oxide layer structure to protect the material. On one hand, TGO is consumed by the reaction of Yb 2 O 3 and Yb 2 SiO 5 with SiO 2 ; On the other, the structure makes no TGO layer between the oxidized and unoxidized regions, which means that even if the TGO layer is stripped, the material still has a dense Yb 2 Si 2 O 7 and Yb 2 SiO 5 mixed layer as a protective barrier.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
产品关联
DOI
高影响因子
Crystals
·
2023
·Vol. 13
·期 3
·460
·
IF 2.7
Danni Huang,Tong Xiao,Beibei Fu,Shoulei Xu,Yuyang Huang,Wen Deng,Zhukun Zhou
ZrO2is an attractive host matrix for luminescence material because of its excellent physical properties, such as low phonon energy and wide band gap. In this work, the highly transparent Tm2O3and Yb2O3co-doped yttria stabilized zirconia (YSZ) (abbreviated as Yb/Tm: YSZ) single crystals were grown by the optical floating zone method. The Yb/Tm: YSZ samples were stabilized in the cubic phase at room temperature when Yb3+and Tm3+replaced Y3+. The influence of Yb3+co-doping on the up-conversion luminescence properties of the crystals was systematically studied. A total of 0.5 mol% Tm2O3and 2.0 mol% Yb2O3co-activated YSZ single crystal (abbreviated as 2.0Yb/Tm: YSZ) has the maximum luminous intensity. There were seven absorption peaks located at around 358, 460, 679, 783.3, 850–1000, 1200, and 1721.5 nm that were observed in the absorption spectrum of the 2.0Yb/Tm: YSZ single crystal. There were three up-conversion peaks at around 488, 658 and 800 nm that were observed when the Yb/Tm: YSZ samples were excitated at 980 nm. The fluorescence lifetime of Tm3+for the1G4→3H6transition of the 2.0Yb/Tm: YSZ sample is 7.716 ms as excited with a 980 nm laser. In addition, the oscillator strength parameters Ωλ(λ = 2, 4 and 6) of this sample were derived by the Judd–Ofelt theory to evaluate the laser performance of the host materials. The ratio Ω4/Ω6of this sample is 0.80, implying its excellent laser output. Therefore, the 2.0Yb/Tm: YSZ single crystal is a considerable potential material for laser and luminescence applications.Keywords:YSZ single crystal;Yb3+and Tm3+co-activated;optical floating zone method;up-conversion luminescence;Judd–Ofelt theory
研究领域:
材料科学
·
光学
·
激光物理
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2020
·Vol. 46
·期 11
·18888-18894
·
IF 3.83
Yiqian Guo,Wenting He,Hongbo Guo
Ceramic materials for the thermal barrier coating (TBC) application of Gd 2 Zr 2 O 7 (GZO), (Gd 0.94 Yb 0.06 ) 2 Zr 2 O 7 (GYb 0.06 Z), (Gd 0.925 Sc 0.075 ) 2 Zr 2 O 7 (GSc 0.075 Z), (Gd 0.865 Sc 0.075 Yb 0.06 ) 2 Zr 2 O 7 (GSc 0.075 Yb 0.06 Z), and (Gd 0.8 Sc 0.1 Yb 0.1 ) 2 Zr 2 O 7 (GSc 0.1 Yb 0.1 Z) were successfully synthesized by chemical co-precipitation. The effects of the doping of Sc 2 O 3 and Yb 2 O 3 on the phases, thermo-physical and mechanical properties of the ceramics were investigated. The results show that both Yb 2 O 3 and Sc 2 O 3 doping promoted the phase transition of GZO from pyrochlore to fluorite. All the Sc 2 O 3 -doped samples exhibited enhanced fracture toughness, as compared to the undoped sample. Furthermore, the GSc 0.075 Yb 0.06 Z sample revealed a thermal conductivity of ~0.8 W/mK at 1200 °C, which was nearly 30% lower than that of the undoped sample. The associated mechanisms related to the effects of the doping on the thermophysical and mechanical properties are discussed.
✓ 已验证
DOI
高影响因子
ACS Applied Nano Materials
·
2024
·
IF 5.3
Dehua Ma,Yifan Wang,Lin Wang,Ying Peng,Yunguang Yin,Shanyue Hou,Luyi Zhu,Xinqiang Wang,Benxue Liu,Guanghui Zhang,Yongshuai Xie,Dong Xu
Ultralow-density (35–60 mg·cm–3) Yb2O3 nanofibrous membranes (YbFMs) with a multilayer structure were successfully prepared for the first time using Yb-acetylacetone coordination polymer as a precursor. Thanks to the high ceramic yield (62.1%) and excellent spinnability of the precursor, the YbFMs exhibited outstanding flexibility, which does not cause damage even when bent or knotted. The tensile strength of the YbFMs was 1.69 MPa, and the maximum elongation could reach 33%. Notably, the YbFMs exhibited robust fatigue resistance, retaining 87.2% of the initial stress even after 500 buckling cycles and preserving 84.75% of the initial stress in compression resilience. Moreover, the YbFMs exhibited flexibility and compressive performance in the temperature range of −196–1350 °C. The thermal conductivity of the YbFMs was 28.9–34.6 mW·m–1·K–1. At a hot surface temperature of 1350 °C, the 6 mm thick YbFMs could reduce the back temperature by about 1070 °C. Thus, YbFMs are expected to be a flexible insulation material at extremely high temperatures.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Jiaqi He,Wenqiang Yu,Shaoyi Li,Peng Ji,Tianpeng Wen,Jingkun Yu,Zijun Peng,Lei Yuan
To address the issue of poor corrosion resistance for pure BaZrO 3 refractory, BaZrO 3 -Yb 2 O 3 composite refractory was designed and prepared in this study. The wettability of high-temperature alloy melt on the composite refractory, the interfacial reaction mechanism and the physical properties of the material were systematically studied. The wetting experimental results show that the wettability of the high temperature alloy melt on the surface of the BaZrO 3 -Yb 2 O 3 composite refractory is lower than that on the pure BaZrO 3 refractory. This phenomenon can be attributed to the synergistic effect of higher surface roughness and the better thermodynamic stability of the BaZrO 3 -Yb 2 O 3 composite refractory. The results of vacuum induction melting experiments show that the interfacial reaction products of the two refractory crucibles and the superalloy melt are ZrO 2 and BaAl 2 O 4 . Owing to the higher thermodynamic stability of BaZrO 3 -Yb 2 O 3 composite refractory, the thickness of the interfacial reaction layer between the BaZrO 3 -Yb 2 O 3 composite refractory and alloy melt is significantly reduced, which is about 1/3 of the thickness for the interfacial reaction layer than pure BaZrO 3 refractory. In addition, the yield strength of the GH4169 alloy melted in the BaZrO 3 -Yb 2 O 3 crucible is approximately 30% higher than that melted in the pure BaZrO 3 crucible. This is mainly due to the less consumption of the Al element during the reaction process between composite refractory and alloy melt, which increases the content of auxiliary strengthening phase in the alloy more, and thereby optimizes the mechanical properties of the alloy. Meanwhile, the thermal conductivity of the BaZrO 3 -Yb 2 O 3 composite refractory is reduced by approximately 45%, while the compressive strength is nearly doubled, which can effectively reduce the heat loss during the smelting process and significantly prolong the service life of the refractory. This study provides a new technical strategy and theoretical support for solving the technical problems of smelting of GH4169 alloy.
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Lijia She,Nan Li,Yi Wu,Xi Xi,Yafei Liu,Peng Shen,Gang Zhao,Jiangquan Ma
Designing efficient and stable oxygen evolution reaction (OER) catalysts is of great significance for hydrogen production technology through the electrolysis of water. Nickel sulfide (NixSy) has garnered considerable attention as an OER electrocatalyst owing to its high electrical conductivity and distinctive structure. Herein, Ni3S4–Yb2O3 on nickel foam electrocatalysts was fabricated through a hydrothermal synthesis approach to optimize the performance of Ni3S4. The incorporation of Yb2O3 induced charge redistribution within Ni3S4, expanded the active surface area, and enhanced the availability of active sites. Consequently, the Ni3S4–Yb2O3/NF catalyst demonstrates exceptional electrocatalytic performance in 1 M KOH, attaining a current density of 10 mA cm–2 at a minimal overpotential of 148 mV, along with an ultralow Tafel slope of 47.3 mV dec–1. In addition, we have confirmed that another reason for the improved performance is that Yb2O3, as an electron donor, can effectively regulate the defects of the Ni atoms. This work offers a feasible strategy for developing highly effective OER electrocatalysts in alkaline media.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2025
·
IF 5.4
Quanhui Zhang,Naikun Sun,Kang Zhao,Meiling Li,Qin Dai,Xinguo Zhao,Juan Cheng,Jiaohong Huang
Magnetic refrigeration in the liquid-helium temperature region plays a significant role in many technological fields. In this work, the crystal structure, magnetic properties, and magnetocaloric effect (MCE) of commercial Yb 2 O 3 and a series of (Yb 1-x Ho x ) 2 O 3 (x = 0, 0.1, 0.2) compounds prepared by a feasible high-energy ball milling method were systematically investigated. The crystallography results demonstrate that these Yb 2 O 3 -based compounds have a cubic bixbyite structure with space group Ia 3 ¯ , and the lattice constant increases with the increase of Ho 3+ ions content. Commercial Yb 2 O 3 shows antiferromagnetic (AFM) ordering at 2.35 K, and ball-milled (Yb 1-x Ho x ) 2 O 3 (x = 0, 0.1, 0.2) compounds have lower AFM ordering temperatures of RE 3+ moments of 2.30 K, 2.15 K and below 2 K for x = 0, x = 0.1 and x = 0.2 samples, respectively. Thermomagnetic behavior under high magnetic fields exhibited the existence of ferromagnetic (FM) correlation in these compounds, and a high magnetic field could induce an AFM to FM transition. The magnetization of Yb 2 O 3 increases with the increase of Ho 3+ ions content due to the increase of the effective magnetic moments. The maximum magnetic-entropy change Δ S M and relative cooling power RCP of (Yb 0.8 Ho 0.2 ) 2 O 3 are 11.1J/kg·K and 123.2 J/kg, respectively under 5 T, which are 19.4 % and 67.6 % larger than those of commercial Yb 2 O 3 . The (Yb 1-x Ho x ) 2 O 3 (x = 0, 0.1, 0.2) compounds have a large MCE under moderate magnetic field changes and there is no thermal and magnetic hysteresis, which is beneficial for application as a promising refrigerant near the liquid-helium temperature range.
研究领域:
材料科学
·
低温物理
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2023
·Vol. 49
·期 21
·34025-34037
·
IF 5.2
Dianchao Liu,Yongzhi Jing,Xiufang Cui,Zhuo Chen,Xinhe Wang,Yongchao Fang,Anying Liu,Guo Jin,Erbao Liu
The phase instability of 6–8 wt% Y 2 O 3 partially stabilized ZrO 2 (YSZ) in high temperature and molten salt corrosion environment seriously limits its application above 1200 °C. In this study, the chemical co-precipitation method prepared Yb 2 O 3 and CeO 2 co-doping YSZ (YbCeYSZ) ceramic materials to improve the above issues. It was proposed to improve the defect of high-temperature phase instability of CeO 2 -doped YSZ materials by adding Yb 2 O 3 . The phase stability, thermal insulation properties , and Na 2 SO 4 + V 2 O 5 molten salt corrosion behavior of YbCeYSZ ceramic materials were studied. The results showed that 2.5 mol% Yb 2 O 3 -4 mol% CeO 2 -YSZ material (2.5Yb4CeYSZ) had no monoclinic phase (m-ZrO 2 ) after holding at 1500 °C for 120 h due to forming more defect clusters in the system. Meanwhile, the 2.5Yb4CeYSZ had excellent thermal insulation performance and molten salt corrosion resistance , which was attributed to the strong phonon scattering in the 2.5Yb4CeYSZ material system and the low reactivity between the stabilizer and the corrosive salt.
✓ 已验证
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2025
·
IF 3.8
Sheng Li,Junjie Shi,Yuchao Qiu,Yongyi Zhou,Xiaoyu Gong,Hongjian Tang,Dong Li,Xiao Sai,Jianzhang Li
Phase relationships in the Yb 2 O 3 –Al 2 O 3 –SiO 2 system are critical for the design and corrosion protection of environmental barrier coatings (EBCs), the available data remain scarce and primarily limited to studies from the 1990s. The isothermal phase diagram of the Yb 2 O 3 –Al 2 O 3 –SiO 2 system at 1600°C was conducted using a classical high-temperature equilibrium quenching technique, followed by XRD, SEM, and EPMA phase analysis. The data were reported in the form of liquidus projections and an isothermal phase diagram at 1600°C, with one single-phase region, six two-phase regions, and seven three-phase regions. A comparison of the liquid phase regions at 1550°C and 1600°C revealed a systematic expansion with increasing temperature, consistent with thermodynamic expectations. The experimental results from the present work are essential for the development of a thermodynamic database for rare earth oxides, providing vital guidance for designing next-generation EBCs.
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Zhilun Zhang,Wei Xie,Xuanru Ren,Bingqing Zhao,Ziqi Zhao,Qian Wang,Mingliang Li,Hailong Wang
To enhance oxidation resistance of carbon/carbon (C/C) composite materials at 1973 K in static air, a novel bilayer Yb 2 O 3 -HfB 2 -SiC/SiC (denoted YHSS) coatings were engineered via a two-step process combining pack cementation and slurry method. A substantial loading of ceramic phases (∼60 wt %) was incorporated into the SiC ceramic layer to improve thermal stability of the oxide scale at 1973 K. Following pre-oxidation, the YHSS coatings impart effective oxidation protection to C/C composite materials for over 228 h at 1973 K. Coupled experimental and theoretical analyses confirm that Yb and Hf atoms diffuse into the thermally grown SiO 2 layer, thereby reinforcing the SiO 2 network structure. Furthermore, the coating's exceptional performance is attributed to its dense, flaw-free surface morphology and the homogeneous dispersion of high-content ceramic phases throughout the SiC layer, collectively suppressing oxygen permeation.
研究领域:
材料科学
·
陶瓷涂层
·
高温材料
·
复合材料
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）