CERAMICS INTERNATIONAL
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2024
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IF 5.1
Dewei Ma,Panli Zhu,Jun Huang,Xiuhua Cao
The research on low-temperature lead-free glass is of great significance for the miniaturization, integration and intelligence of current electronic products, as well as environmental protection. In this article, we report the preparation of low-temperature lead-free B 2 O 3 -BaO-ZnO-SiO 2 -Al 2 O 3 -TeO 2 glasses by a melt-quenching technique. With the increase of TeO 2 content in glass, the glass transition temperature and melting temperature of sintered glass powder decrease, while its wettability and acid corrosion resistance show an increasing trend. The application of glass powder in the sintering experiment of terminal electrode slurry further proves this viewpoint. Compared with the poor sintering performance of the slurry with TeO 2 -free glass powder, the slurry containing TeO 2 glass powder forms a very dense sintered solid, and the sintered slurry is tightly bonded to the ceramic substrate .
研究领域:
材料科学
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环境科学
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Lingjun Zhou,Wenyan Zheng,Muzhi Cai,Feifei Huang,Ying Tian,Shilong Zhao,Liaolin Zhang,Junjie Zhang
The TeO 2 -ZnO-Na 2 O glass system demonstrates significant promise for mid-infrared laser applications due to its high refractive index and low phonon energy, although it is inherently limited by poor thermal stability. Traditional methods aimed at enhancing thermal stability, such as the incorporation of intermediates, typically result in compromised optical performance. However, this study introduces a synergistic optimization strategy through strategic Ta 2 O 5 doping. A systematic analysis utilizing Differential Scanning Calorimetry (DSC), Raman spectroscopy, X-ray Photoelectron Spectroscopy (XPS), and photoluminescence (PL) spectroscopy has uncovered a novel correlation between optical performance and average rather than maximum phonon energy. This discovery provides a refined theoretical framework for the design of tellurite glasses. The optimized Tm 3 -doped TZNT4 glass, with a glass transition temperature ( T g ) of 388 °C and a thermal stability range ( ΔT ) of 137 °C, demonstrates excellent absorption (9.1 ×10 −21 cm 2 ) and emission cross-sections (7.1 ×10 −21 cm 2 ) at 2 μm. This work establishes a structure-property-performance paradigm for tellurite glasses, effectively addressing the critical trade-off between thermal robustness and mid-infrared emission performance through rational composition engineering.
研究领域:
材料科学
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光学
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固体物理
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红外技术
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玻璃工程
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高影响因子
Ceramics-Switzerland
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2026
·Vol. 9
·期 4
·37
·
IF 2.8
Chaochen Chen,Fang Lei,Shiqing Dang,Hongyang Zhang,Ying Shi,Haohong Chen
To address the lack of suitable glass systems for silicon nitride (Si3N4) surface metallization, which requires high wettability and thermal stability, and robust bonding between the copper layer and the ceramic substrate, a novel Bi2O3-TeO2-B2O3-CuO glass system was developed. This study systematically investigated the influence of Bi2O3concentration, glass properties, optimized paste composition, and brazing mechanism using phase analysis, microstructural characterization, particle size statistics, thermal analysis, and tensile testing. An optimal glass composition containing 20 mol% Bi2O3was identified, exhibiting high thermal stability (ΔT = 224 °C) and a coefficient of thermal expansion of 9.63 × 10−6°C−1. At a brazing temperature of 750 °C, the glass demonstrated excellent wettability with a contact angle of 27°. A conductive paste comprising 94 wt% Cu and 6 wt% glass yielded a thick film with a minimum resistivity of 6.25 μΩ·cm and a maximum tensile strength of 25.2 MPa. Mechanism analysis revealed that the superior wettability drives the liquid glass phase to form a thin intermediate layer that significantly reinforces adhesion. These findings contribute to the research and development of subsequent novel glass systems with superior performance.
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JOURNAL OF LUMINESCENCE
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2025
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IF 3.6
Mingjun Zhao,Chongyun Shao,Weichang Li,Danping Chen,Wei Chen
A strong near-infrared (NIR) fluorescent borate glass doped with tellurium (Te) clusters was developed, and spectral properties were studied. Under an oxidizing atmosphere, Te clusters could not be formed; however, under a reducing atmosphere, broadband Te-cluster NIR emission covering 600–1400 nm was successfully achieved, with a peak centered at 900 nm and a full width at half maximum (FWHM) of 270 nm. The findings demonstrated that adjusting the glass composition and TeO 2 doping concentration can significantly enhance the NIR emission of Te-doped borate glass. Furthermore, the study revealed that the photoluminescence performance of this material is highly sensitive to both temperature and excitation wavelength, demonstrating its potential for tunable luminescent properties. A NIR glass-converted LED (gc-LED) device was fabricated by integrating Te-cluster-doped borate glass with a commercial 460 nm LED, demonstrating its potential applications in night vision, non-destructive testing, and biomedical imaging. This research provides a theoretical foundation and technical pathway for developing novel ultra-broadband NIR emission glass materials .
研究领域:
材料科学
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光学材料
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光子学
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固态照明
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近红外技术
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高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
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2020
·Vol. 103
·期 9
·4999-5012
·
IF 3.502
Weichao Wang,Liyan Mao,Jinlin Liu,Shanhui Xu
Er 3+ -doped fiber lasers operating at 2.7 μm have attracted increasing interest because of their various important applications; however, the intrinsic self-terminating effect of Er 3+ and the reliability of glass hosts hindered the development of Er 3+ -doped fiber lasers. Herein, the glass-forming regions of a series TeO 2 –Ga 2 O 3 –R 2 O (or MO) (R = Li, Na, and Rb; M = Mg, Sr, Ba, Pb, and Zn) glasses are predicted by the thermodynamic calculation method. On this basis, the physical and optical properties of TeO 2 –Ga 2 O 3 –ZnO (TGZ) glass are investigated in detail as an example. Under the excitation of 980 nm laser diode, the fluorescence intensity at 2.7 μm reaches a maximum in the heavily Er 3+ -doped TGZ glass. By contrast, the accompanying near-infrared fluorescence at 1.5 μm and upconversion green emissions at 528 nm and 546 nm are all effectively weaken. Furthermore, the lifetime gap between the 4 I 11/2 upper laser level and 4 I 13/2 lower laser level is sharply narrowed from 2.81 ms to 0.59 ms, which is beneficial to overcome the population conversion bottleneck. All results demonstrate that these newly developed ternary tellurite glass systems are promising candidates for near-/mid-infrared laser glass fiber, fiber amplifiers, and fiber lasers.
研究领域:
光学材料
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光子学
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激光物理
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玻璃科学技术
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CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Jiale Wu,Xinyu Zhao,Jin Hu,Zhongshan Deng,Yongjin Feng,Hongtao Fan,Junkai Li,Qingming Chen,Kaijun Wang,Kaizhao Wang
Considering the growing hazards of ionizing radiation, developing new shielding glass systems is essential to increase radiation safety and diversity of material choices in the real-time monitoring field. Based on the excellent comprehensive performance exhibited by high-entropy oxide glasses (HEOGs) due to its unique component composition and high-entropy effect, B 2 O 3 -TeO 2 -BaO-Bi 2 O 3 -MO (W, Ta, Dy, Mo) HEOGs with heavy metal oxides as the fifth component were prepared via the melt-quenching process. Physical, structural, and optical properties analysis show that the tantalum pentoxide (Ta 2 O 5 )-optimized HEOG has higher densification, more continuous and compact network filling, and wider indirect optical bandgap (Eg) than other glasses. The radiation attenuation ability of HEOGs was evaluated utilizing the MCNPX simulation and Phy-X program. The minimum specific lead equivalent (PbE) value of all heavy metal HEOGs in the entire photon energy range (10 −3 –10 3 MeV) is much higher than all types of commercial lead glass in service, showing excellent comprehensive attenuation ability for X-rays, γ-rays, and fast neutrons. In addition, the addition of Ta 2 O 5 dramatically shortens the path and attenuation times required for incident photons to annihilate inside the material due to the density increase effect brought by the high atomic number and high density. In the 100 MeV nuclear radiation area and the 0.08 MeV medical X-ray application zone, only 10 cm and 0.3 cm thickness are needed to achieve saturated absorption of photons.
研究领域:
材料科学
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核物理
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光学工程
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高影响因子
OPTICS AND LASER TECHNOLOGY
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2025
·
IF 5
Lingjun Zhou,Panyi Wang,Tenglong Sun,Yanan Chen,Muzhi Cai,Wenyan Zheng,Feifei Huang,Ying Tian,Liaolin Zhang,Junjie Zhang
Tellurite glasses with the composition 67TeO 2 -3Al 2 O 3 -xZnO-(30-x)Na 2 O (x = 0–20 mol%) were synthesized via melt-quenching. Raman analysis revealed Al/Zn synergistically strengthened the network via Al-O-Te/Zn-O-Te bonds below 15 mol% ZnO, whereas excess ZnO triggered Zn 2+ /Al 3+ site competition, reducing crystallization resistance. The glass with 15 mol% ZnO (TANZ) shows optimal thermal stability ( T g = 311 °C, ΔT = 139 °C) and serves as the host for obtaining mid-infrared emission. The Ho 3+ /Yb 3+ co-doped TANZ glass shows high absorption and emission cross-sections of 7.36 × 10 –21 cm 2 and 5.86 × 10 –21 cm 2 , respectively, along with a long lifetime of 1.33 ms at 2 μm. These results highlight the potential of TANZ glasses as robust gain materials for mid-infrared fiber lasers.
研究领域:
材料科学
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光学
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DOI
高影响因子
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
·
2023
·
IF 3
Han Ziqi,Liu Zhihong,Li Qihou,Wang Kai,Yu Zhiqian,Xia Longgong
Ternary compounds in the Al–Te–O system have been considered as potential materials for Low-Temperature Co-fired Ceramics preparation. Two ternary compounds, Al 2 TeO 6 and Al 2 Te 2 O 7 , have been found in the Al–Te–O system under 920 °C in air. The decomposition behavior of these two compounds has been studied with Thermogravimetric Analysis-Differential Scanning Calorimetry (TGA-DSC) and equilibration experiments. Phase equilibrium of the Al 2 O 3 –TeO 2 system has also been experimentally investigated at ambient atmosphere, and corresponding phase diagram has been derived. Obtained results showed that Al 2 Te 2 O 7 , could only be found when TeO 2 was 66.7-70.0 mol pct and temperature was at 590 °C to 610 °C. Al 2 TeO 6 decomposed into Al 2 O 3 , TeO 2 (g), and O 2 (g) when temperature was above 920 °C. Al 2 Te 2 O 7 converted into Al 2 TeO 6 at 620 ± 2 °C, and then followed the decomposition path of Al 2 TeO 6 . In phase equilibrium study, when the initial sample started from the Al 2 O 3 –Al 2 TeO 6 region, Al 2 TeO 6 and Al 2 O 3 were found in quenched samples at the temperature range of 500 °C to 915 °C. When the initial sample started from the Al 2 TeO 6 –TeO 2 phase region, two solid phases, Al 2 TeO 6 and TeO 2 , could be found in samples prepared under 725 ± 2 °C. When the temperature was above 730 ± 2 °C, there were Al 2 TeO 6 and one oxide liquid phase. In the Al 2 Te 2 O 7 –TeO 2 region, all equilibrated samples had Al 2 Te 2 O 7 and TeO 2 .
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高影响因子
CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Ce Li,Xu Zhang,V.C. Onah,Weiling Yang,Zhuang Leng,Xiliang Jiang,Fangming Zhang,Shasha Li,Yong Zhang,Yu Han,Huisheng Liu,Chun Li,Dingfu Zhou,Fanming Zeng
In analyzing the effect of alkali metal and alkaline earth metal oxide on the properties of tellurite glass , a series of tellurite glass samples doped with alkali metals and alkaline earth metals were prepared based on the TeO 2 -WO 3 -GdF 3 glass system by melt quenching method. Through tests and comprehensive analysis, the results show that after the F − ions successfully enter the glass network, the substitution of TeO 2 by alkali and alkaline earth metals could reduce the molar volume , which means the glass becomes more compacted. The influence on the glass network is mainly shown in [TeO 3 ] and [TeO 4 ] units. Alkali metals and alkaline earth metals could increase the asymmetry of the TWG: Eu 3+ glass network, shorten the critical distance, and increase luminescence intensity by 8.6 times and improve color purity to 94%. In addition, alkali metals could prolong the fluorescence lifetime , while alkaline earth metals could shorten it. Te 4+
研究领域:
材料科学
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光学材料
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玻璃物理
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发光光谱学
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无机化学
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高影响因子
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