International Journal of Applied Ceramic Technology
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2025
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IF 2.3
Zheng Xiang,Yansong Liu,Yongsheng Liu,Wentan She,Shaolin Fu,Yejie Cao
This work investigated sintering procedures for high-porosity alumina ceramic cores fabricated by digital light processing 3D-printing. Results showed that increasing sintering temperature reduced cristobalite while enhancing mullite formation. Flexural strength initially increased then declined with temperature, exhibiting an inverse relationship with porosity. Faster heating rates (up to 4°C/min) decreased mullite content and size, yielding peak strength of 23.73 MPa. Extended holding time reduced porosity but caused strength to first increase then decrease, peaking at 29.06 MPa. Optimal performance was achieved at 1450°C with 4°C/min heating and 120 min hold, producing cores with 28.28 MPa strength, 41.40% porosity, and 2.15 g/cm 3 density. The process successfully balanced high porosity and mechanical properties at reduced temperatures.
研究领域:
材料科学
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制造工程
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DOI
高影响因子
CERAMICS INTERNATIONAL
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2025
·
IF 5.6
Guilin Wang,Youwang Hu,Yandong Wang,Xiaoyan Sun,Pingmei Ming,Feng Wang
Digital light processing (DLP) 3D printing technology fabricates silica glass parts with complex structures using a layer-by-layer curing approach. In this process, plasticizers directly influence the fluidity of the slurry, printing quality, debinding and sintering properties. However, the impact of plasticizers on DLP 3D printed silica glass remains underexplored. This study systematically investigates the influence of plasticizers on key fabrication processes in 3D printed silica glass. The results show that higher diethyl phthalate (DEP) content increases slurry viscosity while decreasing the crosslinking degree of monomers and the flexural strength of the green body. Despite these adverse effects, the green body achieves superior surface quality with elevated DEP content. Plasticizers reduce the extent of thermal decomposition in green bodies within a narrow temperature range. During debinding, DEP incorporation promotes the development of interconnected channels and pores, facilitating the evacuation of gaseous products and minimizing defect formation. Dense amorphous silica glass can be obtained at a temperature of 1300 °C. The 3D printed silica glass exhibits significant improvements in terms of density, surface quality and optical properties when the DEP content is between 10 wt% and 20 wt%. This research offers an important theoretical foundation for developing photopolymerization 3D printing technology applicable to silica glass.
研究领域:
材料科学
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光学工程
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
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IF 5.1
Yaru Qin,Chenyu Zhao,Yujie Huang,Jiguang Dong,Xingyu Yang,Chenglong Shi
Porous β-Si 3 N 4 /Si 5 AlON 7 composite ceramics are anticipated to serve as high-temperature wave-transparent materials, yet the fabrication of high-performance porous β-Si 3 N 4 /Si 5 AlON 7 composite ceramics remains a significant challenge. Addressing this issue, this study introduces a technique for crafting high-performance porous β-Si 3 N 4 /Si 5 AlON 7 composite ceramics. This method involves the homogeneous blending of SiO 2 and Si 3 N 4 powders, followed by digital light processing and high-temperature liquid-phase sintering at 2000 °C. The impact of SiO 2 content on various properties of the ceramic slurry and the resultant ceramics was thoroughly examined, including rheology, curing depth, microstructural morphology, phase composition, flexural strength, hardness, dielectric constant, and dielectric loss. It was observed that a SiO 2 content of 30 % enables the slurry to fulfill the criteria for digital light processing, leading to the production of porous β-Si 3 N 4 /Si 5 AlON 7 composite ceramics that exhibit outstanding mechanical and dielectric properties. Specifically, these ceramics demonstrated a flexural strength of 149.2 ± 7.2 MPa and a hardness of 11.8 ± 1.1 GPa. Moreover, at a frequency of 10 GHz, the ceramics exhibited a dielectric constant of 4.02 and a dielectric loss of 0.11, highlighting their potential as high-temperature wave-transparent materials.
研究领域:
材料科学
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陶瓷工程
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电子材料
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DOI
高影响因子
Additive Manufacturing
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2021
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IF 10.998
Yubei Zhang,Shan Li,Yantong Zhao,Wenyan Duan,Bingshan Liu,Tongcai Wang,Gong Wang
This paper proposed a kind of aluminum alloy powder additive manufacturing technology through surface modification of AlSi10Mg particles and digital light processing (DLP) printing. Firstly, AlSi10Mg particles were coated by styrene through suspension polymerization . The TEM results showed that the coating thickness is approximately 200 nm to 400 nm. Secondly, printing slurry was prepared by mixing photocurable acrylate resin with AlSi10Mg powder. The printing experiments showed that the curing depth of the printing slurry was obviously improved after surface coating of AlSi10Mg power. And the reason was discussed in detail. Then, the photocuring behavior and viscosity of the printing slurry were tested and analyzed. Finally, complex structures of AlSi10Mg material were successfully fabricated by digital light processing. It is demonstrated that surface modification is a feasible method for the photocurable printing of ultrafine alloy powder, which can also be expanded to the additive manufacturing of other alloy systems .
研究领域:
材料科学
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增材制造
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化学工程
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DOI
高影响因子
DIAMOND AND RELATED MATERIALS
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2021
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IF 3.315
Xiaoyan Meng,Wenxin Yang,Xin Deng
Additive manufacture of diamond tools has rarely been investigated to date. In this study, ultraviolet (UV) curable diamond–resin slurries with diamond contents from 6.25 to 25 vol% have been prepared to produce diamond-resin composites via 3D printing using digital light processing . The rheological properties and cure behavior of UV-curable slurries were examined. The results demonstrated that all slurries exhibited typical shear-thinning behavior, and the viscosity of each corresponding slurry noticeably increased as the diamond content increased from 0 to 25 vol%. Regarding the cure behavior, the cure depth and cure width of the slurries were increased and decreased by increasing the exposure time and solid loading, respectively. The mechanical and thermal properties of printed specimens were then characterized. The flexural strength of specimens decreased from 40 to 23.9 MPa with increase in the diamond contents from 0 to 18.75 vol% and appeared to plateau above 18.75vol% of diamond loading. Although the flexural strength increased with increase in the exposure time from 2 to 10 s, the optimal exposure time was 4 s. The geometric accuracy gradually decreased, and specimen deformation occurred when the exposure time exceeded 4 s. Results of the thermogravimetric analysis indicated that the addition of diamond to the slurry improve the specimens thermal stability.
研究领域:
材料科学
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制造工程
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DOI
高影响因子
Nano-Micro Letters
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2022
·Vol. 14
·期 1
·1-14
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IF 23.655
Zhou Rui,Wang Yansong,Liu Ziyu,Pang Yongqiang,Chen Jianxin,Kong Jie
Abstract Combining 3D printing with precursor-derived ceramic for fabricating electromagnetic (EM) wave-absorbing metamaterials has attracted great attention. This study presents a novel ultraviolet-curable polysiloxane precursor for digital light processing (DLP) 3D printing to fabricate ceramic parts with complex geometry, no cracks and linear shrinkage. Guiding with the principles of impedance matching, attenuation, and effective-medium theory, we design a cross-helix-array metamaterial model based on the complex permittivity constant of precursor-derived ceramics. The corresponding ceramic metamaterials can be successfully prepared by DLP printing and subsequent pyrolysis process, achieving a low reflection coefficient and a wide effective absorption bandwidth in the X-band even under high temperature. This is a general method that can be extended to other bands, which can be realized by merely adjusting the unit structure of metamaterials. This strategy provides a novel and effective avenue to achieve “target-design-fabricating” ceramic metamaterials, and it exposes the downstream applications of highly efficient and broad EM wave-absorbing materials and structures with great potential applications.
研究领域:
材料科学
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电磁学
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先进制造
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产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
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2023
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IF 5.2
Xingjie Dong,Jianqin Wu,Qing Zhou,Wenqing Wang,Xueqin Zhang,Lu Zhang,Rujie He
Si 3 N 4 -SiO 2 ceramics are considered as the preferred high-performance wave-transmitting material in the aerospace field. However, traditional fabrication methods for Si 3 N 4 -SiO 2 ceramics have the disadvantages of high cost and complicated fabrication process. In this paper, Si 3 N 4 -SiO 2 ceramics with excellent mechanical and dielectric properties were fabricated by digital light processing-based 3D printing combined with oxidation sintering. Firstly, the curing thickness and viscosity of slurries with different solid loadings for vat photopolymerization-based 3D printing were studied. Then, the effects of the sintering temperature on the linear shrinkage, phase composition, microstructure, flexural strength , and dielectric properties of Si 3 N 4 -SiO 2 ceramics, and the influences of solid loading on them were explored. The curing thickness and viscosity of the slurry with a solid loading of 55 vol% were 30 μm and ∼1.5 Pa‧s, respectively. The open porosity and the flexural strength of Si 3 N 4 -SiO 2 ceramic with a solid loading of 55 vol% were 4.3 ± 0.61% and 76 ± 5.6 MPa, respectively. In the electromagnetic wave band of 8–18 GHz, the dielectric constant of Si 3 N 4 -SiO 2 ceramics was within the range of less than 4, and the dielectric loss remained below 0.09. The method of digital light processing-based 3D printing combined with oxidation sintering can be further extended in the preparation of Si 3 N 4 -based structure-function integrated ceramics.
研究领域:
材料科学
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航空航天工程
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2023
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IF 5.2
Mengting Dang,Xuezheng Yue,Guohong Zhou,Song Hu
Alumina ceramics with optimized microstructures and mechanical properties were obtained by the attractive digital lighting processing (DLP) additive manufacturing methodology in the present study. A acrylate-based resin system was designed for the alumina powders with a mean particle size of 0.5 μm. The influence of oligomer on the viscosity and polymerization kinetics of the ceramic suspensions has been elaborately discussed by rheology, curing depth and photo-DSC characterizations. The results indicated that the introduction of oligomer has improved the cross-linking density of resins and decreased the critical dose of energy for resin polymerization, which contributed to a tougher ceramic-resin slice with higher dimensional accuracy. Densifying processes including debinding and high temperature sintering of the ceramic parts were conducted according to the TG-DTA characterizations, alumina ceramics with uniform microstructures and eliminated delamination or intralaminar cracks were finally obtained. The flexural strength was 471 MPa for the ceramics obtained from the resin composition containing 20 wt% oligomer, Weibull modulus for the ceramics were determined to be 17.31 by evaluating thirty all sides polished ceramics, indicating the highly uniform property of the ceramics fabricated by DLP additive manufacturing.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
CERAMICS INTERNATIONAL
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2024
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IF 5.1
Qingzhi Xu,Fei Liu,Yuntao Huang,Jianping Ma,Lifu Lin
Vat photopolymerization (VPP) technology based on digital light processing offers unparalleled advantages for manufacturing complex aluminum nitride (AlN) ceramic components. However, the thermal conductivities of AlN ceramic components fabricated using VPP typically exhibit significant discrepancies compared to those produced using traditional forming processes. The main reason for this is the limitation of the solid content in the AlN ceramic suspensions reported in previous studies, which is usually constrained within 50 vol%. This study systematically investigates the effects of the dispersants KOS110 and KOS163 on the rheological behavior , curing kinetics, and stability of AlN ceramic suspensions. By optimizing the type and concentration of the dispersants, a photocurable AlN ceramic suspension with a high solid content of up to 60 vol% and excellent flow properties is achieved. Using the optimized AlN suspension, high-resolution complex AlN ceramic components are successfully fabricated, exhibiting outstanding thermal conductivity and flexural strength of 183 W/(m·K) and 331 ± 8 MPa, respectively. This research will provide theoretical guidance and feasible technical routes for the preparation of complex structure AlN ceramic components with high thermal conductivity .
研究领域:
材料科学
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增材制造
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陶瓷
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DOI
高影响因子
Pharmaceutics
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2020
·Vol. 12
·期 3
·207
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IF 4.421
Yan Yang,Yanjun Zhou,Xiao Lin,Qingliang Yang,Gengshen Yang
The high printing efficiency and easy availability of desktop digital light processing (DLP) printers have made DLP 3D printing a promising technique with increasingly broad application prospects, particularly in personalized medicine. The objective of this study was to fabricate and evaluate medical samples with external and internal structures using the DLP technique. The influence of different additives and printing parameters on the printability and functionality of this technique was thoroughly evaluated. It was observed that the printability and mechanical properties of external structures were affected by the poly(ethylene glycol) diacrylate (PEGDA) concentration, plasticizers, layer height, and exposure time. The optimal printing solutions for 3D external and internal structures were 100% PEGDA and 75% PEGDA with 0.25 mg/mL tartrazine, respectively. And the optimal layer height for 3D external and internal structures were 0.02 mm and 0.05 mm, respectively. The optimal sample with external structures had an adequate drug-loading ability, acceptable sustained-release characteristics, and satisfactory biomechanical properties. In contrast, the printability of internal structures was affected by the photoabsorber, PEGDA concentration, layer height, and exposure time. The optimal samples with internal structures had good morphology, integrity and perfusion behavior. The present study showed that the DLP printing technique was capable of fabricating implants for drug delivery and physiological channels for in vivo evaluation.
研究领域:
生物医学工程
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材料科学
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个性化医学
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DOI
高影响因子
CERAMICS INTERNATIONAL
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2024
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IF 5.1
Junzhe Xin,Weidong Wu,Kun Cao,Chenhui Li,Yuefang Peng,Chun Du,Bin Shan
Silicon carbide (SiC) ceramic lattice structures (CLSs) hold significant potential for use in structural components and optical mirrors in space exploration due to their light weight, high strength, and excellent dimensional stability. However, they face challenges such as poor curing performance and weak mechanical strength during the digital light processing (DLP) additive manufacturing process. In this study, SiC@Al 2 O 3 powder was prepared, resulting in a 21 % reduction in absorptivity compared to bare SiC powder. The ceramic paste derived from this powder achieved a curing thickness of up to 80 μm, exhibited a reduced over-curing width, and demonstrated a 75 % improvement in stability compared to bare SiC paste. Consequently, high-quality triply periodic minimal surfaces (TMPS) structured SiC@Al 2 O 3 CLSs green bodies were successfully fabricated. By integrating precursor impregnation pyrolysis with the reaction melting infiltration (PIP-RMI) post-treatment densification method, SiC@Al 2 O 3 /Si CLSs were produced, exhibiting superior mechanical properties with low dimensional shrinkage. At 30 % volume fraction, the specific compressive strength of the primitive-TPMS SiC@Al 2 O 3 /Si CLSs reached 24.79 MPa. This study presents an effective method for fabricating SiC-based CLSs and establishes a foundation for the optimization of SiC ceramic fabrication processes.
研究领域:
材料科学
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制造工程
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DOI
高影响因子
MATERIALS & DESIGN
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2022
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IF 9.417
Xiaohong Yin,Qi Li,Yirong Hong,Xiaowen Yu,Xianyan Yang,Zhaonan Bao,Mengfei Yu,Huayong Yang,Zhongru Gou,Bin Zhang
Due to the personalized large defect and bone absorption of the alveolar cleft, its regeneration is still a great challenge. Conventional autologous bone repair leads to donor site adverse reactions and then bioactive materials with stable mechanical properties, suitable degradation rates, good osteogenic ability are required. In this study, the α-tricalcium phosphate (doping with and without 6% strontium; α-TCP-Sr6, α-TCP) bioceramic scaffolds with high-precision pore structure were developed to repair the alveolar cleft, and the physicochemical properties and bone repair performances were systematically compared with the pure β phase of tricalcium phosphate (β-TCP) bioceramic scaffolds. It was shown that Sr dopant could adjust the bio-dissolution of α-TCP scaffolds, and contributed to excellent mechanical stability. As for the osteogenic capability in the alveolar cleft of rabbits, the α-phase TCP scaffolds both exhibited appreciable new bone ingrowth compared to the β-TCP scaffolds. However, bone malformation and fibrous tissue invasion occurred in the control group (without filling scaffolds). This study suggests that the Sr dopant may adjust the biodegradation and mechanical stability of α-TCP, and such biodegradable Ca-phosphate bioceramics scaffolds prepared by digital light processing (DLP)-based 3D printing technique demonstrate significance in promoting the reconstruction of the alveolar cleft.
研究领域:
生物医学工程
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材料科学
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口腔医学
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DOI
高影响因子
危险品化学品经营许可证（带存储）