JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2017
·Vol. 28
·期 17
·13201-13208
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IF 2.019
Zhang Yijun,Zhang Junwen,Jin Yu,Zhang Jiaqi,Hu Guangcai,Lin Sai,Yuan Rongrong,Liang Xiaojuan,Xiang Weidong
The spherical shape copper oxide (CuO) quantum dots (QDs) were successfully fabricated via copper basic calcium sodium borosilicate (Na 2 O–CaO–B 2 O 3 –SiO 2 ) precursor obtained with a facile sol–gel technique. The microstructural analysis of doped QDs are systemically characterized, such as transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM) and X-ray photo-electron spectroscopy. And the results reveal that the CuO QDs with the small size are well dispersed doped in sodium calcium borosilicate glass. Remarkably, the CuO glass materials exhibit the good third-order optical nonlinear susceptibility χ (3) (1.379 × 10 −12 esu), which was investigated by femto-second Z-scan technique at the wavelength of 1550 nm, pulse duration of 50 fs, repetition rate of 50 MHz. The glass hybrids displayed a reverse saturable absorption and self-focusing refraction performance. And the mechanism to explain the third-order nonlinearity of CuO glass may be predominantly originated from the surface plasmon resonance effect, the quantum confinement effect and partly from the thermal effect. Besides, it is interesting that the glass hybrids have significant nonlinear absorption effects that endow the material to the potential value of the application of optical limiting device.
研究领域:
材料科学
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光学
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DOI
高影响因子
MATERIALS & DESIGN
·
2022
·
IF 9.417
Qianqian Chen,Panpan Lin,Xuanyu Du,Hiroyuki Inoue,Kazuro Kizaki,Tiesong Lin,Peng He
A new low-temperature magnetic Bi 2 O 3 -CoO-Fe 2 O 3 -B 2 O 3 (BCFB) glass was designed to acquire magnetic yttrium iron garnet (YIG/YIG) joint. This paper investigated the thermal behavior of BCFB glass and its wettability on YIG. The microstructural evolution, mechanical and electromagnetic properties of YIG/YIG joint were systematically studied. CoFe 2 O 4 nuclei were gradually formed, growing up into nano-scale CoFe 2 O 4 crystals in the glass seam. Meanwhile, some CoFe 2 O 4 crystals grew up excessively by swallowing nano CoFe 2 O 4 , reaching microns. YBO 3 reaction layer was formed and grew into YBO 3 whiskers at the interface of YIG/glass with the brazing temperature increasing. The joint shear strength increased, reaching a maximum of 85.2 MPa at 775 °C under the collaborative reinforcement of well-integrated interface and glass-ceramic seam, then declined due to the aggravative reaction. The dielectric constant of YIG/YIG joints decreased with the brazing temperature increasing, varying from 18.5 to 16.6 at the frequency of 10 MHz. AFM/MFM and VSM analyses indicate that the glass seam performed magnetic property. The saturation magnetization of BCFB glass reached about 4.2 emu/g and 5.0 emu/g heat-treated at 750 °C and 775 °C, respectively, which could effectively enhance the magnetism of the glass seam.
研究领域:
材料科学
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磁学
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DOI
高影响因子
RSC Advances
·
2022
·Vol. 12
·期 36
·23118-23128
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IF 4.036
Luxin Zhang,Xu Xing,Ruijun Sun,Meng Hu
Selective catalytic conversion of carbohydrates to 5-ethoxymethylfurfural (EMF) is a critical approach to the biorefinery. In this work, solid acid catalysts of γ-AlOOH and CeO2@B2O3 were used to convert carbohydrates to EMF in a one-pot process, performed in an ethanol/DMSO solvent system. The synergistic effect of γ-AlOOH and CeO2@B2O3 was studied. Furthermore, the morpho-structural properties of the catalysts were characterized, and the effects of reaction time, reaction temperature, catalyst load, and the amount of cosolvent on the conversion of glucose to EMF were examined and optimized. Under the reaction conditions of 170 °C for 20 h, glucose, sucrose, cellobiose, inulin and starch were used as raw materials, and the EMF yield range was 9.2–27.7%. The results showed that the synergistic effect of γ-AlOOH and CeO2@B2O3 further causes the combination of multiple acid sites with different types and strength distributions. Particularly, the collaboration between weak, medium-strong, and strong acid, as well as between Lewis and Brønsted acidity, is of great significance for EMF generation. The reusability experiments showed that the combined catalytic system was easily separated and maintained catalytic activity for five successive reactions without further intermediate regeneration steps. This work provides a promising route for the catalytic conversion of biomass-derived carbohydrates into EMF.
研究领域:
化学工程
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催化
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可再生能源
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生物化学
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DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2021
·Vol. 9
·期 32
·10462-10471
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IF 7.393
Jingjun Yang,Qingyuan Li,Congcong Ding,Lili He,Liang Xue,Wencai Cheng,Zhentao Zhang,Guilin Wei,Yi Liu,Long Huang,Yi Xie,Xirui Lu
This study is dedicated to investigating the performance of B2O3–Bi2O3–ZnO low-temperature glass-ceramics to immobilize iodine-loaded silver-coated silica-gel (AgIs). Various mass fractions of iodine (15, 20, 25, and 30 wt%) in AgIs were studied. The degree of amorphization and density increased with increasing sintering temperature for all immobilization samples, where, the sample with 20 wt% iodine in AgIs presented optimal immobilization results at 600 °C. The diffraction peak area of AgI was the lowest and the degree of amorphization was the highest (0.562) for the sample with 20 wt% iodine in silver-coated silica gel when it was sintered at 600 °C. SEM-EDS results showed that two approaches contributed to the immobilization of AgIs: the first one is that AgIs participates in the formation of the glass-ceramics phase, which makes iodine uniformly immobilized in the glass mesh; the second one is that the glass-ceramics phase physically encapsulates a small range of aggregated AgI. The results of TGA-DSC analysis showed that the samples had a high water content, which facilitated the lowering of the glass transition temperature of the samples and thus the curing of iodine. Most importantly, when the sintering temperature is below 600 °C, the evaporation of iodine is minimal to negligible. The leaching results showed that the samples were highly resistant to leaching of elemental iodine. This experiment verified the feasibility and efficiency of B2O3–Bi2O3–ZnO ternary glass-ceramics to immobilize iodine-loaded silver-coated silica-gel at low temperatures.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2026
·
IF 6.7
Peiyu Zeng,Renli Fu,Chaoyue Jia,Yifan Lv,Yitao Xue
Sapphire, with its superior optical and thermal properties, is an increasingly attractive high-performance substrate material for advanced LED packaging. However, its inherent surface characteristics-namely the absence of grain boundaries and strong chemical inertness-pose significant challenges for conventional metallization processes, severely limiting its broader application in electronic packaging. To address this critical issue, this study develops a novel silver conductive paste incorporating a custom-designed ZnO–B 2 O 3 –SiO 2 –CuO (ZBSC) glass frit as the inorganic binder. A robust silver thick film was successfully fabricated on a sapphire substrate via a thick-film metallization process. We systematically investigate the effect of sintering temperature on the film's microstructure and properties. The results demonstrate that the ZBSC glass exhibits excellent comprehensive performance and exceptional compatibility with the sapphire substrate. A key finding is the in-situ formation of a spinel CuAl 2 O 4 phase at the interface during sintering, resulting from a chemical reaction between the glass frit and the substrate. This interfacial reaction is crucial for achieving superior bonding. Optimized at a sintering temperature of 850 ℃, the silver film exhibits outstanding comprehensive performance: an ultra-low sheet resistance of 2.03 mΩ/□ and a high shear strength of 21.97 MPa. This performance is attributed to a dense, well-sintered silver microstructure with a continuous and complete conductive network, intimately bonded to the sapphire substrate. This work not only provides a high-performance solution for sapphire metallization but also offers new insights into the role of interfacial chemistry in thick-film technology. The proposed method represents a high-quality, reliable metallization technique with significant promise for advanced electronic packaging applications.
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 6
Weicheng Lei,Jinyang Cai,Changzhi Yin,Congao Jin,Xiaoqiang Song,Jiaqing Yang,Yiyang Cai,Mingfei Cheng,Yaodong Liu,Zihang Chen,Yaqing Hu,Pingan Tan,Wenzhong Lu,Wen Lei
As communication technologies advance toward high frequency bands, demand for low-temperature co-fired ceramic (LTCC) materials with low dielectric constants ( ε r ) and high quality factors ( Q×f ) continues to surge. In this work, ZnO-Al 2 O 3 -B 2 O 3 -SiO 2 (ZABS) glass-ceramics were prepared using water-quenching followed by solid-state sintering. The effect of Zn/Si ratio on crystallization activation energy, sintering behavior, phase evolution, microstructure, and dielectric properties of glass-ceramics were researched. Results indicated that the crystallization tendency of glass-ceramics reduces with the Zn/Si ratio decreases from 2 to 1.38 because of the enhances glass network stability resulting from increases SiO 2 content. However, a further decrease in the Zn/Si ratio leads to intensified crystallization tendency, which is caused by the occurrence of phase separation in the glass. All samples achieve densification in the range of 875–925 °C, with Zn 2 SiO 4 as the main crystalline phase. Dielectric properties are significantly improved by decreasing the ZnO content and increasing the SiO 2 content. The glass-ceramics with Zn/Si = 1.38 sintered at 875 °C/2 h exhibits excellent performance: ε r = 5.3, Q×f = 28200 GHz (at 15.73 GHz), a temperature coefficient of resonant frequency ( τ f ) of −33 ppm/°C, and a flexural strength of 119 MPa. These excellent dielectric properties make the developed glass-ceramics promising candidates for future LTCC applications.
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Chen Zhang,Benzheng Gao,Qi Li,Xin Wang,Jianliang Xie
Porosity is a characteristic feature of atmospheric plasma–sprayed (APS) coatings that strongly influences their physical and functional properties. However, studies on its effect on the electromagnetic (EM) performance and high-temperature stability of microwave-absorbing coatings (MACs) remain limited. In this work, FeSiAl/CaO–B 2 O 3 –SiO 2 composite coatings with different porosities were fabricated by adjusting powder feed rate (PFR). Microstructural evolution, EM properties, and isothermal oxidation behavior of prepared composite coatings were systematically investigated. Results show that increasing PFR reduces the extent to which particles are melted, leading to higher porosity due to the retention of unmelted particles. The increased porosity disrupted local conductive networks, altered the complex permittivity and permeability, and lowered the bonding strength of the coatings. Moreover, pores and cracks facilitated oxygen diffusion, accelerating oxidation and crack propagation at elevated temperatures. After high-temperature oxidation, the decrease in complex permittivity improved impedance matching and broadened the absorption bandwidth. These findings provide new insights into microstructure–property relationships of APS-deposited MACs and offer a strategy for tailoring the coating porosity to simultaneously optimize their EM absorption performance and high-temperature oxidation resistance.
研究领域:
材料科学
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表面工程
·
功能材料
·
高温防护
·
电磁学
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产品关联
DOI
高影响因子
MATERIALS LETTERS
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2014
·
IF 2.269
Xuepeng Lu,Yong Zheng,Zuowei Dong,Qi Huang
The novel low-temperature sinterable 0.6Li 2 ZnTi 3 O 8 –0.4Li 2 TiO 3 ceramics were prepared by cofiring the mixtures of pure-phase Li 2 ZnTi 3 O 8 , Li 2 TiO 3 and ZnO–B 2 O 3 –SiO 2 glass. Li 2 ZnTi 3 O 8 and Li 2 TiO 3 phase could well coexist in the sintered samples with no second phase detected. The near-zero temperature coefficients of the resonant frequency ( τ f ) were achieved and simultaneously the desirable quality factor Q × f values could be maintained. Typically, the 0.6Li 2 ZnTi 3 O 8 –0.4Li 2 TiO 3 ceramics with 1.0 wt% ZBS addition could be well densified at only 900 °C and exhibited excellent microwave dielectric properties of ε r =25.4, Q × f =86,400 GHz and τ f =−1.0 ppm/°C, thus showing a great potential as a middle permittivity low-temperature cofired microwave dielectric material .
研究领域:
材料科学
·
电子材料
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DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2020
·
IF 3.408
Xiao Wang,Bingsheng Li,Zhi Chen,Xiaoyan Shu,Zhentao Zhang,Jingjun Yang,Guilin Wei,Yi Liu,Shunzhang Chen,Yi Xie,Xirui Lu
The treatment of iodine wastes has been widely concerned. In this work, B 2 O 3 –Bi 2 O 3 based material was used to immobilize the silver coated silica gel with different iodine loadings. Based on XRD results analyses, the sample with 90 mol% B 2 O 3 was selected for iodine waste immobilization. XRD results represented that the sintering temperature of 500 °C was suitable to immobile iodine waste. The micro-structure of the sintered matrix mainly consists of the stretching vibration of [SiO 4 ]. SEM-EDS results showed that the elements of Ag and I exist element aggregation in some regions, which indicates that part of AgI was immobilized in the glassy phase while the other was physically enclosed in the sintered matrix. This study provides certain valuable reference and experimental basis for the subsequent curing of iodine-containing silver coated silica gel with multicomponent glass.
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DOI
高影响因子
JOURNAL OF ELECTRONIC MATERIALS
·
2025
·Vol. 54
·期 6
·4882-4890
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IF 2.5
Fu Yingtao,Chen Zhaoyang,Sun Yifan,Liu Yi,Fan Yanwei,Wang Junhua,Chen Huiming
In order to develop glass-ceramic materials capable of emitting neutral white light and to address the limitations of single rare earth element ion-doped luminescent materials, a glass-ceramic material containing Dy 3+ /Eu 3+ -co-doped NaCaPO 4 nanocrystals was successfully synthesized using the melt-quenching and two-step crystallization methods. The prepared glass-ceramic materials were characterized by X-ray diffraction, transmission electron microscopy, and photoluminescence spectroscopy. The energy transfer process between Dy 3+ and Eu 3+ ions was confirmed through excitation spectra, emission spectra, and luminescence decay curves. The emission coordinates and correlated color temperatures of samples with different doping concentrations were calculated using the standard CIE 1931 colorimetric system. The results showed that coordinated emission was achieved in the glass-ceramic containing NaCaPO 4 nanocrystals under excitation at 363 nm. Furthermore, by adjusting the concentration ratio of Dy 3+ and Eu 3+ ions, the color temperature of the white light emission could be tuned from 9910 K to 5349 K, enabling modification of the emission color from the cool-white region to the pure-white region, with chromaticity coordinates reaching (0.3350, 0.3040). Additionally, the material exhibited high thermal stability, with an activation energy of 0.18649 eV. It is expected that the Dy 3+ /Eu 3+ -co-doped NaCaPO 4 glass-ceramic studied here has broad prospects for applications in white light-emitting diodes.
研究领域:
材料科学
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光子学
·
光学材料
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稀土掺杂
·
固态照明
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产品关联
DOI
高影响因子
Surfaces and Interfaces
·
2026
·
IF 6
Peixin Li,Yaotian Yan,Zilong Zhang,Ziyao Huang,Haohan Wang,Tianlei Zhang,Liang Qiao,Jian Cao,Junlei Qi
SiO 2f /SiO 2 composites offer excellent dielectric and thermal stability, but reliable integration remains difficult due to the limitations of conventional metal brazes, including CTE mismatch and electrical conductivity. This study developed a novel all-dielectric brazing material, Bi 2 O 3 -B 2 O 3 (BB) glass, for joining SiO 2f /SiO 2 composite materials. The BB glass synthesized via melt-quenching exhibits an amorphous structure, a low glass transition temperature (T g =403°C), and an adjustable CTE (7-9×10 -6 /°C). Wetting experiments demonstrate excellent spreading on the SiO 2f /SiO 2 surface, with a contact angle as low as 16°. Density functional theory (DFT) analysis reveals that the formation of Bi-O-Si bonds and B-O-Si networks at the interface enhances the bonding strength. Differential charge density and density of states (DOS) results indicate that the electronic structure of BB glass improves dielectric response and reduces insertion loss in the GHz frequency band. BB glass overcomes the shortcomings of traditional brazing materials, providing a theoretical and technical foundation for reliable joining of SiO 2f /SiO 2 composite materials in extreme environments. Download: Download high-res image (353KB) Download: Download full-size image
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2020
·
IF 3.83
Peisen Liu,Xueying Zhang,Yunjia Xue,Anran Guo,Liachen Liu
A heat resistance adhesive with wide operative temperature range for bonding alumina fiber fabric was developed by organic-inorganic modification. The polyvinyl alcohol modified by B 2 O 3 generated a complex cross-linked network connected by B–O–C bonds, which can enhance the bonding strength of adhesive after heat-treatment from RT to 400 °C. Moreover, the addition of B 4 C can enhance the bonding strength of adhesive after heat-treatment from 400 °C to 800 °C due to the formation of molten B 2 O 3 and borosilicate glass . Significantly, the appropriate addition of B 4 C can make the adhesive form a denser structure without transforming the fracture mode of the bonding joints, which is conducive to enhance the strength performance of bonding joints after sintered at 800 °C. On the contrary, the excessive addition of B 4 C will transform the fracture mode of the bonding joints into brittle fracture , which will degrade the strength performance of bonding joints.
研究领域:
材料科学
·
化学工程
✓ 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）