OPTICS LETTERS
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2024
·Vol. 49
·期 9
·2245-2248
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IF 3.1
Xiaolan Zhou,Xiaolan Zhou,Shengyuan Chen,Shengyuan Chen,Cong Zhang,Cong Zhang,Xu Huang,Xu Huang,Kailei Lu,Kailei Lu,Jianqi Qi,Jianqi Qi,Jianqi Qi,Tiecheng Lu,Tiecheng Lu,Tiecheng Lu,Tiecheng Lu
Narrowband green-emission, combined with superior physicochemical stability and thermal performance, is regarded as a common pursuit in backlight display applications. However, mainstream phosphor-converted materials composed of resin or silicone resin easily encounter the dilemma of thermal decomposition and chemical corrosion for practical use. To overcome this problem, in this work, Mn2+/Mg2+ co-doped AlON ceramic is successfully realized with ultra-narrowband green-emission and high transparency. The luminescent property of AlON: Mn2+–Mg2+ ceramic exhibits narrowband green emission centered at 509 nm with a full width at half maximum of 36 nm, which is smaller than the corresponding powder counterpart (44 nm). Moreover, AlON: Mn2+–Mg2+ ceramic presents a wide color gamut (103.6%) and high color purity (74%). Concurrently, high transmittance of this ceramic, at 82%, unveils a potential innovation in the display technology field. This work may facilitate the development of narrowband green light-emitting converters based on AlON: Mn2+–Mg2+ transparent ceramics in large color gamut backlight display applications.
研究领域:
材料科学
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光学工程
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显示技术
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DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
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2018
·
IF 3.057
Hanqin Liang,Huilu Guo,Jinwei Yin,Kaihui Zuo,Yongfeng Xia,Dongxu Yao,Jian Zhang,Yuping Zeng,Shiwei Wang
Transparent AlON ceramics were bonded with Lu-Al-Si-O-N oxynitride glass interlayer at 1450 °C in nitrogen atmosphere in this investigation. The Lu-Al-Si-O-N oxynitride glass showed good wettability on the AlON substrate and had strong interface adhesion with each other. The joining process had no detrimental effect on the in-line transmittance of transparent AlON ceramics but caused slight decrease of flexural strength due to the partial decomposition. The bonding strength of AlON/AlON joint was 142.7 ± 6.3 MPa at room temperature and 110.1 ± 9.6 MPa at 1200 °C in situ, which were comparable with those of the parent AlON ceramics. Some Lu 2 Si 2 O 7 grains crystallized out from the glass interlayer after joining.
研究领域:
材料科学
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陶瓷工程
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Yingchun Shan,Xuemin Xi,Liya Ma,Haoran Guo,Xiaoguang Han,Jiangtao Li,Jiujun Xu
In consolidation of AlON , the extensive decomposition of AlON into α-Al 2 O 3 and AlN during sintering is one of the major reasons that significantly retard its densification process. To accelerate densification of AlON, an ultra-low concentration of La 2 O 3 (0.03 wt%) and Y 2 O 3 (0.02-0.04 wt%) was co-doped as sintering additives to inhibit decomposition of AlON during sintering for fast fabrication of highly transparent AlON ceramics. The phase transformation, microstructure evolution and densification process of the samples undoped and doped additive during heating were studied to investigate the densification mechanism. The results reveal that, compared to the samples undoped additive and single-doped with La 2 O 3 , the α-Al 2 O 3 content of the samples co-doped with La 2 O 3 and Y 2 O 3 is significantly deduced at ≤1600 °C, which indicates that the decomposition of AlON is effectively inhibited by co-doping La 2 O 3 and Y 2 O 3 . The reduction of α-Al 2 O 3 along with the deceleration effect of La 3+ on mass transfer, contributes to more small particles being conserved at high temperatures. Base on this, at later stage of sintering, benefiting from the enhanced mobility of grain boundary by Y 3+ , AlON ceramics with high relative density (99.79 %) and excellent transparency were obtained via pressureless sintering at 1880 °C for 2.5 h by co-doping 0.03 wt% La 2 O 3 and 0.04 wt% Y 2 O 3 . The maximum transmittance of the fabricated AlON ceramics is up to 81.6 % at 3600 nm, and a transmittance of 76.0 % was measured at 400 nm. The ultra-low doping amount of La 2 O 3 and Y 2 O 3 and the high relative density should be the main reasons that lead to the outstanding transparency of the obtained AlON. Additionally, the fabricated AlON ceramics also exhibit a high Vickers hardness of 18.89 ± 0.18 GPa.
研究领域:
材料科学
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陶瓷工程
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2018
·
IF 3.057
Huilu Guo,Xiaojian Mao,Jian Zhang,Run Tian,Shiwei Wang
Attempts have been made to manufacture AlON transparent ceramics at low temperature using a new sintering aid system, Y 2 O 3 -La 2 O 3 -MnO. The sintering behaviors, including relative density and microstructure evolution of AlON ceramics doped with Y 2 O 3 -La 2 O 3 , MnO alone, and Y 2 O 3 -La 2 O 3 -MnO were compared. It was found that both the relative densities and grain sizes of samples doped with Y 2 O 3 -La 2 O 3 -MnO were much higher and larger than those of samples doped with Y 2 O 3 -La 2 O 3 or MnO alone, respectively. A liquid phase containing Al, O, N, Mn, and La formed at high temperature and played an important role on both eliminating pores and promoting grain growth of the sintered AlON bodies. Finally, translucent AlON ceramics were obtained through pressureless sintering at 1830 °C for 1 h, ~100 °C lower than those with conventional sintering aid Y 2 O 3 -La 2 O 3 . The ceramics doped with MnO showed green emission at 534 nm, under 445 nm excitation. We believe Y 2 O 3 -La 2 O 3 -MnO is a promising additive for the preparation of AlON transparent ceramic at lower temperature.
研究领域:
材料科学
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陶瓷工程
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光学材料
✓ 已验证
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DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
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2022
·
IF 6.364
Xiao-Tong Jia,Zhao-Hui Zhang,Xian-Yu Li,Tian-Hao Xu,Luo-Jin Liu,Qiang Wang,Zhao-Hu Jia,Xing-Wang Cheng
AlON ceramics were prepared by spark plasma sintering (SPS) with raw materials (60 mol% Al 2 O 3 and 40 mol% AlN) and sintering aids (0.16 wt% Y 2 O 3 + 0.3 wt% MgO + 0.06 wt% La 2 O 3 ). The effects of the SPS parameters on the microstructures and mechanical properties of the SPSed AlON ceramics were investigated systematically. This investigation suggested that when the sintering temperature was 1580 ℃, the sintering pressure was 50 MPa, and the holding time was 5 min, the AlON ceramics with excellent mechanical and optical performances were successfully synthesized. They exhibited a high hardness of 18.97 GPa, a good bending strength of 538 MPa, a fracture toughness of 5.88 MPa·m 1/2 , and particularly, a high transmittance of 76.28% at 750 nm.
研究领域:
材料科学
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陶瓷工程
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DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2023
·Vol. 106
·期 10
·6301-6316
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IF 3.9
Xiao-Tong Jia,Zhao-Hui Zhang,Tian-Hao Xu,Luo-Jin Liu,Yuan-Hao Sun,Xian-Yu Li,Qiang Wang,Zhao-Hu Jia,Yang-Yu He,Xing-Wang Cheng
Aluminum oxynitride (AlON) ceramics doped with different sintering aids were synthesized by spark plasma sintering process. The microstructures, mechanical, and optical properties of the ceramics were investigated. The results indicate that the optimal amount of sintering aids is 0.06 wt% La 2 O 3 + 0.16 wt% Y 2 O 3 + 0.30 wt% MgO. The addition of La 3+ and Mg 2+ decreases the rate of grain boundary migration in ceramics, promotes pore elimination, and inhibits grain growth. The addition of Y 3+ facilitates liquid-phase sintering of AlON ceramics. Moreover, the addition of Mg 2+ effectively promotes twin formation in the ceramics, which hinders crack propagation and dislocation motion when the ceramics are loaded. Hence, the AlON ceramic doped with 0.06 wt% La 2 O 3 + 0.16 wt% Y 2 O 3 + 0.30 wt% MgO exhibits a relative density of 99.95%, an average grain size of 9.42 μm, and a twin boundary content of 10.3%, which contributes to its excellent mechanical and optical properties.
研究领域:
材料科学
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陶瓷
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烧结技术
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DOI
高影响因子
危险品化学品经营许可证（带存储）