CERAMICS INTERNATIONAL
·
2026
·
IF 5.6
Junling Yu,Jianmin Liu,Feng Jiang,Guo Feng,Hui Yu,Xiangping Jiang,Yun Yu
In order to obtain samples with high color purity, we first proposed a novel spectral-clipping approach. In this technique, the incorporation of ions with spectral regulation characteristics, through the energy level transition, the absorption of variegated peaks in the sample reflection spectrum and the selective emission of the desired color or specific band can be achieved. Taking Eu-doped Cr-ZrSiO 4 green ceramic pigment as an example, and its crystal structure, diffuse reflectance spectrum, and color characteristics were systematically investigated. First-principles band calculations were performed on (Eu,Cr)-ZrSiO 4 supercells to elucidate the effect of co-doping on the electronic structure and optical properties. Structural and spectral analyses demonstrate that Eu doping effectively eliminates stray colors, yielding a pure green color ( L* =76.26, a* = -7.9, b* =12.17) and significantly enhancing the near-infrared reflectance, which reaches 90.36% in the 700-2500 nm wavelength range. The spectral-clipping approach shows promising potential for applications in pigments and phosphor materials.
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DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2021
·
IF 3.498
Zhengdi Jiang,Zhen Li,Zhenyu Chen,Xuanrui Zhang,Weijie Fan,Yuan Liu,Hui Dan,Yi Ding,Tao Duan
Zircon (ZrSiO 4 ) ceramics were widely used in the field of nuclear waste immobilization because of their excellent properties. However, the SiO 2 /ZrSiO 4 ceramics were usually obtained in the preparation of ZrSiO 4 . The actinides immobilization behavior of SiO 2 /ZrSiO 4 ceramics is unclear. Herein, Nd-doped 0.2SiO 2 /Zr 1- x Nd x SiO 4- x /2 (0≤ x ≤ 0.1) ceramics were fabricated and the effects of Nd-doping and sintering temperature on their phase and microstructure evolution were investigated. The obtained ceramics were characterized by XRD , SEM, BSE and EDS . Results show that 0.2SiO 2 /Zr 1- x Nd x SiO 4- x /2 ceramics with 0≤ x < 0.04 are ZrSiO 4 phase; while with 0.04≤ x ≤ 0.1 are coexistence of ZrSiO 4 and Nd 2 Si 2 O 7 phases. The solubility limit of Nd 3+ in 0.2SiO 2 /ZrSiO 4 is about 4 at%. The lattice volume of ZrSiO 4 increased with increasing Nd-doped content and sintering temperature. Furthermore, higher Nd-doped content and sintering temperature are beneficial to the densification of the obtained ceramics. The results demonstrate that the 0.2SiO 2 /ZrSiO 4 ceramics can be employed as waste form materials to immobilize trivalent actinides.
研究领域:
材料科学
·
核工程
·
陶瓷
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 5.6
Feng Jiang,Jie Liu,Duo Zhou,Junxiong Zhang,Zhibin Chen,Guo Feng,Quan Zhang,Xiaojun Zhang,Jianmin Liu,Yun Yu
In this study, high chroma Ce and Pr co-doped zircon-yellow ceramic pigments were synthesized via an in-situ molten salt-assisted method. The effects of Pr doping content and Si/Zr molar ratio on the color performance, phase composition, and microstructure of the pigments were systematically investigated. The results indicated that the introduced of Pr cations not only serve as the chromogenic center but also promotes the crystallization of zircon. The optimal color performance of the sample was achieved when the Pr doping content was 0.07 and the Si/Zr molar ratio was 1.05, with corresponding CIELAB values of L∗ = 77.29, a∗ = 13.78, b∗ = 76.12, and C∗ = 77.36. This color performance was remarkably superior to that of a commercially available high-grade yellow pigment ( L∗ = 82.04, a∗ = −1.62, b∗ = 56.28, and C∗ = 56.30). The synthesized pigment exhibited remarkably coloring performance, a small particle size with a narrow distribution (D 10 = 1.15 μm, D 50 = 3.72 μm, and D 90 = 7.88 μm), and good dispersibility. The in-situ molten salt-assisted method employed in this study offers advantages such as low calcination temperature, reduced environmental impact, and simple operation. This method provides a reliable strategy for the eco-friendly synthesis of high performance yellow ceramic pigments used in premium ceramic decoration.
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高影响因子
CERAMICS INTERNATIONAL
·
2018
·
IF 3.057
Huidong Tang,Qing Hu,Weihui Jiang,Jianmin Liu,Guo Feng,Ting Chen,Guangfan Tan,Xiaojun Zhang,Lifeng Miao
A zircon encapsulated carbon black (C@ZrSiO 4 ) pigment with high color rendering was synthesized via facile non-aqueous acetic acid (NAA) assisted sol-gel method using carbon-containing precursors (zirconium n -propoxide and tetraethoxysilane) as in-situ carbon sources. The effects of the NAA amount and heat treatment temperature on the structure and properties of the synthesized encapsulation pigments were characterized by XRD , FT-IR, FE-SEM, HR-TEM, EDS , XPS and CIELAB colorimeter, respectively. The results showed that the C@ZrSiO 4 encapsulated pigments heating at 1000 °C for 2 h in N 2 atmosphere presented a dense and stable encapsulation structure as well as deep dark hue when the mole ratio of NAA and Zr (NAA/Zr) was 3:1, and the chromaticity values were L* = 21.20, a* = 0.56, b* = −0.09 and C ab = 0.57, respectively, which were contributed to the high homogeneity at atomic level in ZrSiO 4 sol and the tight bonding between carbon black carbonized by carbon containing group and zircon matrix. In addition, the pigment exhibited excellent chemical stability, thermal stability and tinctorial strength when it was used in water, acid, alkali, organic solvents and ceramic glaze . Especially, these pigments improved the utilization of raw materials and avoided the use of heavy metals or transition metals as coloring agent, which was an environment-friendly black ceramic pigment.
研究领域:
材料科学
·
无机化学
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2023
·Vol. 50
·期 6
·9453-9459
·
IF 5.2
Dandan Zhao,Yisheng Chen,Zhongxiang Guo,Shuangyi Jia,Hui Dan,Yi Ding
Using conventional solid state sintering method to synthesize ZrSiO 4 ceramics may result in high temperature and time consumption. Herein, a novel preparation route combining the advantages of molten-salt method and hot-pressing sintering (MH) was developed and used to efficiently prepare 0.2ZrO 2 /ZrSiO 4 ceramics (Z/Z). The phase structure, micromorphology, compactness and hardness of the obtained ceramics affected by the salt to oxide ratio, sintering temperature and holding time were investigated and discussed. It was found that the obtained Z/Z ceramics with high density (95.44 % of theoretical density) and high hardness (12.77 GPa) were prepared by the MH at low temperature and short holding time. The discussion of the results revealed that the optimum ratio of salt to oxide was 10: 1, molten-salt sintering conditions were 1300 °C and 6 h, hot-pressing sintering conditions were 64 MPa, 1200 °C and 0.5 h. The results demonstrated that the novel preparation route could be extended to prepare other high-performance ceramics.
研究领域:
材料科学
·
陶瓷工程
·
固态化学
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Tao Wang,Jianmin Liu,Weihui Jiang,Feng Jiang,Guo Feng,Lifeng Miao,Quan Zhang,Qian Wu,Xinbin Lao
A fluorine-free and low temperature synthetic route derived from in-situ formed mineralizer has been developed to fabricate V–ZrSiO 4 turquoise ceramic pigment. When the calcination temperature is 750 ° C and mole ratio of Na 3 VO 4 to ZrOCl 2 ·8H 2 O (NV/Zr) is 0.3, the as-prepared pigment exhibits a cluster-like structure and deep blue hue (L* = 69.28, a* = −12.15, b* = −20.04). The solid state reaction taking place during the mechanical grinding process lead to the in-situ formation of mineralizer NaCl and certain Si–O–Zr bond. The XRD refinement results and hyperfine structure in EPR spectra indicate that vanadium is located at the zircon interstitial site 16g with an isolated V 4+ cluster state. The enameled samples exhibit excellent coloring ability, high chemical and thermal stability, suggesting its potential application in ceramic decoration.
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高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 6
Jie Liu,Feng Jiang,Duo Zhou,Xianhui Yin,Guo Feng,Qian Wu,Xiaojun Zhang,Quan Zhang,Jianmin Liu,Yun Yu
Terbium-doped zircon (ZrSiO 4 ) yellow pigments were synthesized via a mechanochemical-assisted in-situ molten salt method, and their coloration mechanism was investigated. The results show that Tb ions are solid solved in the zircon lattice in mixed Tb 3+ /Tb 4+ valence states. The bright yellow color of the pigment is primarily due to the O 2p → Tb (IV) 4f LMCT transition of Tb 4+ , while the oxygen vacancy mechanism compensates for the charge imbalance from Tb 3+ doping. Under optimal conditions, including a Tb doping amount of 0.07, a Si/Zr molar ratio of 1.05, and calcination at 800 °C for 2 h, the pigment demonstrated superior color performance with chromaticity values of L* = 87.60, a* = −7.43, b* = 72.22, and C* = 72.60. The pigment has uniform particle size distribution and excellent glaze compatibility, maintaining a stable yellow color within a glaze-firing temperature range of 1000–1300 °C, and does not contain harmful elements such as Pb, Cd, or Cr. The mechanochemical-assisted in-situ molten salt method used in this study presents a low-temperature synthesis route for high-performance yellow ceramic pigments, which offers potential for reducing thermal energy consumption.
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DOI
高影响因子
Open Ceramics
·
2026
·
IF 3.4
Tao Wang,Xiang Zhang,Qiguo Hu,Xinhao Li,Tiangui Zhao,Lan Ma,Ting Sun,Jianmin Liu,Feng Jiang,Guo Feng
A novel low–temperature route has been developed to prepare Fe–ZrSiO 4 ceramic pigment with the assistance of in–situ formed molten salt. The effects of calcination temperature on the preparation and chromatic properties of the obtained pigments were investigated. When optimized calcination temperature is 900 °C, the as–prepared Fe–ZrSiO 4 ceramic pigment shows a pink coral with chromatic parameters of L* =56.64, a* =18.77 and b *=12.20. The obtained pigment shows a good dispersibility with average particle size of 2 μm, and can be susscessfully applied in high–temperature glazing coloration. The XRD and XPS results, as well as the changes in chromatic parameters after application in glaze, confirm that the doping of iron ions into ZrSiO 4 lattice is the main reason for the coloration of Fe–ZrSiO 4 ceramic pigment. The utilization of in–situ formed molten salt can provide a valuable reference for low–temperature synthesis of other ceramic materials.
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DOI
高影响因子
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