JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2018
·
IF 3.794
Lan Wang,Xiaoyan Shu,Facheng Yi,Dadong Shao,Kuibao Zhang,Haibin Zhang,Xirui Lu
A series of Nd and Ce co-doped Gd 2- x Nd x Zr 2- y Ce y O 7 (0.0 ≤ x , y ≤ 2.0) ceramics were rapidly fabricated through spark plasma sintering (SPS) within 3 min. The effects of Nd and Ce contents on the phase composition, lattice parameter , active modes, microtopography and microstructure have been investigated in detail. XRD studies reveal that the compositions corresponding to 0.0 ≤ y ≤ 1.0 show a single phase and beyond 1.0 exhibit multiphase. The lattice parameters increase with elevated Nd and Ce content. The grains are densely packed on each other with cube-like shape, and the elements are almost homogeneously distributed in the compound. This synthetic method provides a simple pathway for the preparation of highly densified single phase ceramic at 1600–1700 ℃ for 3 min under pressure of 80 MPa.
研究领域:
材料科学
·
无机化学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Xiao-Chun Deng,Guo-Hua Zhang
A series of high-entropy carbide ceramics with high-performance were successfully prepared by SPS using self-synthesized fine high-entropy carbides powders as hard phase and metal Co as the binder. The effects of Ti and/or Mo addition on densification, grain size and mechanical properties of (ZrHfTaNb)C–10Co ceramic were investigated. The results showed that the addition of Mo improved the wettability between the ceramic phase and Co phase, and significantly increased the densification degree of the ceramics. In addition, the average grain size decreased and the microstructure became more uniform after adding Ti and/or Mo. Compared with the mechanical properties of (ZrHfTaNb)C–10Co ceramic, those of (ZrHfTaNbTiMo)C–10Co ceramic were greatly enhanced under the action of high-entropy effect and solid solution strengthening. The hardness and fracture toughness of the (ZrHfTaNbTiMo)C–10Co ceramic achieved the satisfactory values of 20.37 GPa and 8.59 MPa m 1/2 , respectively.
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
CERAMICS INTERNATIONAL
·
2019
·
IF 3.45
Zhidong Xia,Bin Meng,Heng Zhang,Qian Zheng,Wenke Liang,Xinyu Ping
Ce 0.8 Sm 0.2 O 1.9 (SDC)-xMgO (x = 0, 5, 10, 15, and 20 mol%) composite powders were synthesized by a sol-gel method and then densified by spark plasma sintering (SPS) to investigate the effects of MgO additions on the electrical conduction behavior of CeO 2 -based ceramics. The microstructure and electrical performances of the SDC-MgO composite ceramics were characterized and measured by XRD , SEM, TEM, EDS and EIS . Results show that the second phase of MgO segregates at the grain boundaries of SDC when its content is higher than 5 mol% in the ceramics. The SPS process accelerates the formation of MgO lamellar grains with incomplete crystallization. As the MgO content rises from 0 to 20 mol%, the grain boundary and total electrical conductivities first increase and then decrease, and the SDC-5%MgO sample exhibits the highest total conductivity, i.e., 2.76 × 10 −2 S/cm at 650 ° C, which is 9.65% higher than that of pure SDC.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Advanced Optical Materials
·
2024
·
IF 8
Panyi Wang,Mengmeng Meng,Man Nie,Xiaoyu Hu,Peiqing Cai,Muzhi Cai,Lei Lei,Laurent Calvez,Xianghua Zhang,Shiqing Xu
The development of all-inorganic lead-free Cs 3 Cu 2 I 5 perovskite materials has garnered significant attention due to their non-toxic nature and unique optoelectronic properties, particularly in the field of X-ray detection. However, the stability of perovskites remains a major concern for their optical applications. In this study, a highly stable Cs 3 Cu 2 I 5 -in-glass composite (Cs 3 Cu 2 I 5 @Borosilicate) is fabricated by spark plasma sintering (SPS), a rapid and low-temperature sintering process. The Cs 3 Cu 2 I 5 @Borosilicate composite exhibits strong photoluminescence even after prolonged immersion in various polar solvents, whereas Cs 3 Cu 2 I 5 perovskite loses its photoluminescence within seconds. Moreover, the Cs 3 Cu 2 I 5 @Borosilicate composite demonstrates robust radio-luminescence under X-ray irradiation, and its potential as a scintillator material is validated through prototype X-ray imaging with a high spatial resolution (≈7 lp mm −1 ). This innovative composite material holds immense potential for scintillation applications and represents a promising approach for encapsulating perovskites in a transparent amorphous medium.
研究领域:
材料科学
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光电技术
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放射学
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
SCRIPTA MATERIALIA
·
2014
·
IF 2.968
Dewen Wang,Lu Shen,Songlin Ran,Qing Huang
Transparent alumina was fabricated by spark plasma sintering with AlF 3 doping at a high heating rate of 100 °C min −1 and a moderate loading pressure of 73 MPa. The sintered AlF 3 -doped alumina was dark in color due to light absorption by F − substitution and by the resulting defects induced in the alumina lattice. An AlF 3 doping concentration of 0.1% was found best for producing transparent alumina. A possible mechanism was proposed to explain the doping effect under the present sintering condition .
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Rong Tu,Yijun Xu,Xiaoping Guo,Yibing Su,Yuzhe Han,Qizhong Li,Meijun Yang,Song Zhang,Takashi Goto
The incorporation of t-ZrO 2 into α-Al 2 O 3 matrix is a widely established method for enhancing the mechanical properties of ceramic materials, i.e. , zicornia toughened alumina (ZTA). In this study, acetylacetonate zirconium and acetylacetonate yttrium were thoroughly mixed with α-Al 2 O 3 powder and then calcined to achieve a uniform dispersion of organometallic-derived tetragonal zirconia polycrystal (TZP) particles in nano-size onto α-Al 2 O 3 , forming a composite powder. The TZP particle size increased from 8 to 39 nm with increasing calcination temperature from 600 to 1000 °C. The TZP nanoparticles coated α-Al 2 O 3 powder was sintered by spark plasma sintering (SPS) to obtain ZTA ceramics. TZP is embedded in the face-centered cubic skeleton formed by α-Al 2 O 3 and restricts grain growth to each other. The highest hardness and toughness, i.e. , 18.81 GPa and 10.31 MPa m 1/2 , of the ZTA ceramics was achieved at 1400 °C by using the composite powder calcined at 600 °C.
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
JOURNAL OF APPLIED ELECTROCHEMISTRY
·
2023
·Vol. 53
·期 12
·2331-2346
·
IF 2.9
Xiao Yan,Sun Wan-chang,Bai Zhong-bo,Liu Er-yong,Du Liang-liang,Cai Hui,Wang Li-ping,Liu Jing-pei,Jia Ya-peng,Zhang Jie
Additives are a cost-effective method to improve the performance of the very low profile (HVLP) copper foil coarsened layer. In this paper, the effects of 3,3’-Dithiobis-1-propanesulfonic acid disodium salt (SPS), gelatin, and sodium thiazoline dithiopropane sulfonate (SH110) concentration on the morphology, roughness, and peel strength of HVLP copper foil was reported. The results show that SH110 contributes significantly to the reduction of copper foil roughness, improvement of peel strength, and refinement of coarsened layer grains. In addition, the linear scanning voltammetry and AC impedance spectroscopy of the solution were carried out to understand the action mechanism of additives on the copper foil surface. The results demonstrate that SPS promotes the copper deposition process due to the presence of sulfonic acid groups(–SO 3 ). The amino group(–NH 2 ) of gelatin inhibits copper deposition. SH110 has both promoter (Sodium 3-Mercapto-1-Propane Sulfonate, MPS) and inhibitor (Tetrahydrothiazolidinone, H1) fragments, which achieve synergistic or competitive effects consistent with the composite additive. Graphical abstract
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF NUCLEAR MATERIALS
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2023
·
IF 3.1
Jinhui Tan,Rongxia Huang,Hua-Tay Lin,Malin Liu,Bing Liu,Rongzheng Liu
A novel gel-casting process for fabrication of the fully ceramic microencapsulated (FCM) fuel with high TRISO particles loading capacity was proposed. In the gel-casting process, silicon carbide (SiC) ceramic was used as matrix, and low toxic N-methylol acrylamide was used as organic monomer with appropriate proportion of cross-linking agent, dispersant , and initiator to achieve the strength of green bodies. FCM fuel pellets with high TRISO particles loading capacity were successfully prepared by SPS process. By using the gel-casting method, the volume fraction of TRISO particles could reach 57%, and the average distance between TRISO particles in a plane was 52.4 μm, which could avoid TRISO particles damage introduced by direct contact between the particles. The structure of SiC matrix was dense and complete, and there was a coherent contact between the matrix and TRISO particles, which ensured the performance and reliability of FCM fuel.
研究领域:
核能工程
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2021
·Vol. 11
·期 9
·2404
·
IF 5.076
Liren Zheng,Minrui Wang,Yujie Li,Fahao Ma,Jiyu Li,Weiyi Jiang,Mu Liu,Hefeng Cheng,Zeyan Wang,Zhaoke Zheng,Peng Wang,Yuanyuan Liu,Ying Dai,Baibiao Huang
Monoclinic bismuth vanadate (BiVO4) is an attractive material with which to fabricate photoanodes due to its suitable band structure and excellent photoelectrochemical (PEC) performance. However, the poor PEC stability originating from its severe photo-corrosion greatly restricts its practical applications. In this paper, pristine and Mo doped BiVO4ceramics were prepared using the spark plasma sintering (SPS) method, and their photoelectrochemical properties as photoanodes were investigated. The as-prepared 1% Mo doped BiVO4ceramic (Mo-BVO (C)) photoanode exhibited enhanced PEC stability compared to 1% Mo doped BiVO4films on fluorine doped Tin Oxide (FTO) coated glass substrates (Mo-BVO). Mo-BVO (C) exhibited a photocurrent density of 0.54 mA/cm2and remained stable for 10 h at 1.23 V vs. reversible hydrogen electrode (RHE), while the photocurrent density of the Mo-BVO decreased from 0.66 mA/cm2to 0.11 mA/cm2at 1.23 V vs. RHE in 4 h. The experimental results indicated that the enhanced PEC stability of the Mo-BVO (C) could be attributed to its higher crystallinity, which could effectively inhibit the dissociation of vanadium in BiVO4during the PEC process. This work may illustrate a novel ceramic design for the improvement of the stability of BiVO4photoanodes, and might provide a general strategy for the improvement of the PEC stability of metal oxide photoanodes.Keywords:BiVO4photoanode;photoelectrochemical stability;spark plasma sintering (SPS);ceramics
研究领域:
材料科学
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光电化学
·
陶瓷工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
International Journal of Applied Ceramic Technology
·
2024
·Vol. 21
·期 6
·3842-3850
·
IF 1.8
Zhen-Quan Liang,Jia-Ji Liang,Jun-Jie Yu,Pei-Bin Cai,Wei-Ming Guo,Hua-Tay Lin
Spark plasma sintering (SPS) is an ultrafast sintering method for the preparation of ceramics and ceramic composites with simple geometrical shapes, with the combined application of uniaxial pressure. This study aims to propose an SPS densification method for Si 3 N 4 ceramic balls without necessitating alterations to tools and equipment. The Si 3 N 4 ceramic balls intended for sintering are positioned within a SiC powder bed inside the conventional die used in SPS. The study systematically investigates the effects of presintering temperature (1400°C, 1500°C, and 1600°C) and SPS temperature (1600°C, 1700°C, and 1800°C) on the sphericity, relative density, phase composition, microstructure, and mechanical properties of Si 3 N 4 ceramic balls. Experimental findings reveal that Si 3 N 4 ceramic balls exhibiting an optimal combination of sphericity (0.94 ± 0.02), relative density (98.4%), and mechanical properties (Vickers hardness: 17.5 ± 0.4 GPa, fracture toughness: 6.4 ± 0.1 MPa·m 1/2 ) were successfully achieved at a pre-sintering temperature and SPS temperature of 1600°C, coupled with the use of a SiC powder bed and SPS method. Consequently, the SPS method demonstrates its capability to fabricate Si 3 N 4 ceramic balls with excellent performance.
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
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
·
2020
·
IF 4.652
Jianlong Chai,Yabin Zhu,Zhiguang Wang,Tielong Shen,Yiwen Liu,Lijuan Niu,Shufen Li,Cunfeng Yao,Minghuan Cui,Chao Liu
Al 2 O 3 –ZrO 2 (3Y)–SiC ceramic composites were prepared by spark plasma sintering in vacuum under 40 MPa of uniaxial compression between 1300 °C and 1400 °C. The effect of nano-size SiC and sintering temperature on the microstructure and mechanical properties of ceramic composites were investigated. The results showed that SiC particles was uniformly distributed in the composite, mainly within the matrix grains. Sintering temperature and SiC particles caused the shape of alumina grains to be columnar. The flexural strength of 22.3 vol% Al 2 O 3 -57.7 vol% ZrO 2 -20 vol% SiC sintered at 1350 °C composites was 1081 MPa, fracture toughness was 15.18 MPa m 1/2 and hardness was 16.42 GPa. The addition of SiC particles leads to grain boundary strengthening, and the change of fracture mode and cracks deflection and bridging are considered to be the main reasons for the increase in material fracture toughness.
研究领域:
材料科学
·
陶瓷学
·
复合材料
·
固态物理
·
结构材料
✓ 已验证
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2022
·Vol. 106
·期 4
·2491-2500
·
IF 4.186
Hailiang Fang,Shijia Gu,Shengjie Fan,Beiying Zhou,Ping Huang,Wei Luo,Lianjun Wang,Wan Jiang
Fine-grained and dense highly transparent Y 2 O 3 ceramics have been successfully prepared using high sintering activity mesoporous Y 2 O 3 powders without any additive by spark plasma sintering (SPS). The influences of the sintering temperature on microstructure, density, optical, and mechanical properties of SPS-sintered Y 2 O 3 ceramics were studied in detail. As results, the optimal Y 2 O 3 ceramics with high relative density of 99.90% and fine average grain size of 140 nm were obtained at a low sintering temperature of 1140°C and a moderate load pressure of 60 MPa for 5 min. Meanwhile, the dense Y 2 O 3 ceramics with 1 mm thickness after annealing show a high linear transmittance of 78% (close to 94% of the theoretical value) at 2.4–3 µm wavelength. In additions, the Vickers hardness and fracture toughness of samples can reach 8.48 GPa and 1.45 MPa m 1/2 , respectively. This result proves that the high activity of mesoporous Y 2 O 3 is considered to be an important means for preparing high-performance fine Y 2 O 3 ceramics at low sintering temperature.
研究领域:
材料科学
·
陶瓷
·
光学材料
·
纳米材料
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）