COMPOSITES SCIENCE AND TECHNOLOGY
·
2024
·
IF 8.3
Xianhe Cheng,Qigang Han,Yuzhang Huang,Mingdi Shi,Hexuan Shi,Mengxue Ji,Chuncai Yang
The ultrafine mineral bridges/bio-polymer hybrid structure inspired by nacreous is applied to the interface structure design of composite, aiming to address the high brittleness and low damage tolerance problems of carbon fiber composite fan blades (CFCFB). Herein, we present a simple and efficient approach, called the "cationic copolymer-mono micelle-mediated" method, to translate the nacre-inspired structure for developing micelles/ZnO hybrid nanocoating. The hybrid nanocoating was demonstrated to have remarkable characteristics such as ultrafine ZnO sizes, monodispersity, uniformity, and core-shell structure (diameters: ≈45 nm). Additionally, the coating process is simple, solvent-free, and seamlessly integrates with scalable carbon fiber manufacturing. Based on the nacre-inspired interface structure, the CFCFB exhibits high interlaminar strength (99.3 MPa), high stiffness (79 GPa), and high toughness (41.2 MPa m 1/2 ). This study provides a blueprint for bioinspired ultrafine nanostructure design in composites and inspires advanced manufacturing strategies for other promising engineering materials.
研究领域:
材料科学
·
制造工程
·
仿生学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Dongyang Zhang,Hongying Yu,Anzhe Wang,Qi Wang,Lu Ren,Ping Hu,Dongbai Sun
The need for synergy of strengthening and anti-oxidation under high-temperature and oxidative environment imposes new demands on nonablative thermal protection materials. Herein, 2D C f /ZrB 2 -SiC composite with superior damage tolerance and excellent oxidation resistance were constructed using a simple fiber heat treatment. An enhanced flexural strength of 234 ± 18 MPa and an intermediate work of fracture of 1342 J/m 2 were obtained for 2D C f-HT /ZrB 2 -SiC composite, increasing by nearly 19.4% and 171.7% as compared with those of C f-AR /ZrB 2 -SiC sample, triggered by multiple toughening mechanisms including crack bifurcation, fiber bundles pull-out and bridging. The surface of 2D C f-HT /ZrB 2 -SiC composite was covered with a dense silica glass layer and embedded with a few zirconia particles after oxidation at 1500 °C for 1 h, resulting in an excellent oxidation resistance. This work presents a simple approach to achieve the synergy of superior damage tolerance and oxidation resistance of continuous carbon fiber reinforced ceramic matrix composite.
研究领域:
材料科学
·
航空航天工程
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Applied Ceramic Technology
·
2024
·Vol. 21
·期 5
·3128-3140
·
IF 1.8
Yang Wang,Zhuoqun Han,Qingxuan Zhou,Yongning Han,Lunan Bi,Xia Zhang,Xiang Lu,Jie Zhao,Wei Chu,Jian Li,Zhicheng Zhao,Yingying Wang,Ling Li,Futian Liu
Digital light processing (DLP) provides a promising avenue for constructing ceramic parts with high precision and complex shapes, yet the inherent brittleness and strength-toughness trade-off hinder their wide applications. Here, according to DLP 3D printing, the textured alumina ceramic components with horizontally aligned textured microstructure were successfully created by adding anisotropically shaped platelets. As a critical process in the preparation of textured ceramics, the alumina platelets were aligned horizontally during printing by using the special shear fields and forming capabilities of DLP technology. The shrinkage, density, microstructure, mechanical performance, and damage-tolerance behavior of alumina parts with different platelet concentrations were examined, and the toughening mechanisms were investigated. The strength and toughness of ceramics with 5 vol.% platelet addition are increased by 22% and 43%, respectively, as compared with those without platelets. The improved damage tolerance capabilities were primarily ascribed to the collaborative toughening mechanisms stimulated by the platelet addition, including crack branching, crack deflection, uncracked-ligament bridging, and platelet pull-out, which increased the crack tortuosity and consumed more fracture energy. The strategy opens up new opportunities to design complex 3D ceramic geometries with bio-inspired layered or textured architectures, providing optimized damage tolerance.
研究领域:
材料科学
·
制造工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2025
·
IF 3.8
Zhuo Huang,Zheng Zhu,Min Liu,Bing Ye,Wei Chang,Helezi Zhou,Xiaodong Guo,Bin Wu,Wei Huang
Tissue engineering scaffolds with hierarchical porous structures has been a promising strategy for healing large bone defects. The fabrication of multiscale porous structures resembling real bone tissues presents a great challenge. In addition, as the porosity increases, the mechanical strength of scaffolds decreases dramatically, leading to catastrophic failure of scaffolds under external loadings. In the current work, a cryogenic 3D printing technique of fabricating hierarchical porous hydroxyapatite (HA) and polyether ether ketone (PEEK) composite scaffolds was proposed. Both pure HA and HA/PEEK composite scaffolds with porosity ranging from 60% to 80% were successfully fabricated. Submillimeter scale pores (∼300 µm), microscale pores (∼10 µm), and nanopores (∼500 nm) were integrated in the 3D-printed scaffolds. Because of the hierarchically arrangement of pores, the printed HA scaffolds show an unusual long plateau strain during compressions, indicating excellent damage tolerance. The HA/PEEK composite scaffold can withstand compression strains up to 80% without disintegration, showing even better damage resistance. Compared to traditional porous ceramic bone scaffolds, the cryogenic 3D-printed scaffolds show extraordinary specific mechanical strength and damage tolerance by keeping high volume percentage of pores at the same time. The degradation capability of HA nanoparticles in vitro and cellular activity testing of the scaffolds further demonstrates the potential application in bone tissue repair.
研究领域:
生物医学工程
·
组织工程
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
·
2021
·
IF 5.234
Yang Wang,Qiang Liu,Biao Zhang,Haoqian Zhang,Yicheng Jin,Zhaoxin Zhong,Jian Ye,Yuhan Ren,Feng Ye,Wen Wang
Freeze casting is a promising approach for assembling lamellar metal-ceramic composites with an exceptional combination of strength and toughness. Although these mechanical properties can be optimized by regulating the microstructure of porous ceramic structures, the effect of lamellar thickness is rarely mentioned, especially for B 4 C/Al composites. Herein, by controlling the freezing temperature, we used freeze casting to create nacre-like B 4 C scaffolds with identical ceramic content yet different lamellar thicknesses and then infiltrated them with 2024Al alloy. The effects of lamellar thickness on the damage-tolerance behavior and toughening mechanisms are discussed. The refinement of lamellae decreases the probability of observing catastrophic flaws in ceramic layers, increasing strength from 534 ± 14 to 578 ± 15 MPa and increasing crack-initiation toughness (K Ic ) from 9.2 ± 0.6 to 11.4 ± 0.2 MPa m 1/2 . These composites exhibit higher damage tolerance resulting from several toughening mechanisms, such as plastic deformation , crack deflection and blunting, and the uncracked-ligament bridging of ductile metal layers, which is reflected in the stable crack propagation during fracture and rising R-curve behavior. Importantly, coarsening of the structure of composites allows the fracture behaviors transform from single to multiple crack propagation, thus absorbing much more fracture energy, with the valid crack-growth toughness (K Jc ) enhancing markedly from 17.1 ± 2.4 to 29.8 ± 2.3 MPa m 1/2 .
研究领域:
材料科学
·
仿生工程
✓ 已验证
DOI
高影响因子
Journal of Advanced Ceramics
·
2013
·Vol. 2
·期 2
·193-200
·
IF 0
Wang Qian,Grasso Salvatore,Hu Chunfeng,Zhang Haibin,Cai Shu,Sakka Yoshio,Huang Qing
Single-phase Y 4 Al 2 O 9 (YAM) powders were synthesized via solid-state reaction starting from nano-sized Al 2 O 3 and Y 2 O 3 . Fully dense (99.5%) bulk YAM ceramics were consolidated by spark plasma sintering (SPS) at 1800 °C. We demonstrated the excellent damage tolerance and good machinability of YAM ceramics. Such properties are attributed to the easy slipping along the weakly bonded crystallographic planes, resulting in multiple energy dissipation mechanisms such as transgranular fracture, shear slipping and localized grain crushing.
研究领域:
材料科学
·
陶瓷工程
✓ 已验证
产品关联
DOI
CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Yang Wang,Qiang Liu,Biao Zhang,Haoqian Zhang,Zhaoxin Zhong,Jian Ye,Yuhan Ren,Liying Shen,Feng Ye,Wen Wang
The bio-inspired 2024Al/B 4 C composites with a laminate-reticular hierarchical architecture were constructed by squeeze casting of 2024Al into loose freeze-cast ceramic scaffolds. This pressurized infiltration process provided a clean and well-bonded interface without physical gaps. By regulating the initial suspension concentration (20, 25, 30 and 35 vol%), the effects of different ceramic content on the microstructure, damage-tolerance behavior and toughening mechanisms of the composites parallel and perpendicular to the ice-growth direction were investigated. The strength and toughness in the longitudinal direction were greater than that in the transverse direction. The 2024Al/20 vol% B 4 C composite in the longitudinal direction yielded the highest flexural strength of 658 MPa, crack-initiation toughness ( K Ic ) of 18.4 MPa m 1/2 and crack-growth toughness ( K Jc ) of 27.5 MPa m 1/2 . The unique damage-tolerant properties were attributed to multiple toughening mechanisms, including crack deflection, branching and blunting, ductile-ligament bridging and multiple-crack propagation, as evidenced by the stable crack growth and rising R-curve behavior during fracture. The significantly decreased damage tolerance in the transverse direction was mainly due to inadequate toughening tools. On the other hand, both the flexural strength and fracture toughness reduced remarkably as the ceramic content increased. The 2024Al/35 vol% B 4 C composite fractured in a single-crack mode and the crack growth path was almost straight, showing a relatively low flexural strength (502 MPa) and crack-initiation toughness (9.1 MPa m 1/2 ). The toughening mechanism was discussed in terms of the relationship between structural characteristics and cracking mode.
研究领域:
材料科学
·
力学
·
仿生学
✓ 已验证
产品关联
DOI
高影响因子
Additive Manufacturing
·
2024
·
IF 10.3
Ming-Yue Jiang,Xiang-Yu Meng,Jin Zhou,Zhen-Yu Wei,Hai-Feng Zhang,Ping Shen
Optimizing the composition and structure of materials in localized regions of the materials is an effective approach to enhance the material utilization efficiency and achieve a performance-on-demand design. However, it is challenging to achieve such design owing to limitations in manufacturing technology . In this study, we devised a method involving vat photopolymerization 3D printing and magnet-assisted pressure infiltration techniques for fabricating near-net-shape customized gradient composites with Al/Al 2 O 3 as the model system. The mechanical properties of the fabricated Al/Al 2 O 3 composites at specific locations could be optimized by appropriately setting the thickness ratio of the metal layer to the ceramic layer , and a desirable combination of strength , toughness, and wear resistance could thereby be achieved. The fracture behavior of the composites was analyzed through in situ observation and finite element simulations . The proposed design concept and fabrication method are flexible and adaptable, and they can be easily extended to other material systems and structural models. They are expected to pave the way for the development of lightweight, strong, tough, and near-net-shape structural and functional materials .
研究领域:
材料科学
·
制造工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Yongzhao Yang,Fei Yin,Chuanqi Xiang,Lijuan Zhou,Wuhong Xin,Shuang Li
Bioinspired structures provide promising paths to address the inherent brittleness of structural ceramics. Here, we proposed a hierarchically laminated structure to enhance the damage tolerance and fracture toughness of SiC ceramics. The SiC ceramics were formed by tape casting with graphene platelets (GPLs) as the reinforcement, and then sintered by hot pressing and liquid silicon infiltration. Thus, hierarchically laminated architectures were constructed by the casting sheets, the directionally distributed GPLs and the in-situ β-SiC grains. With the increase of sintering aid, the bulk density of the laminated ceramics increased from 3.09 ± 0.03 g/cm 3 to 3.18 ± 0.02 g/cm 3 ascribed to infiltration of the glassy phases and the liquid silicon. Due to the hierarchically laminated structure, the flexural strength increased from 299.4 ± 4.1 MPa to 350.61 ± 9.5 MPa with the infiltration of liquid silicon, while the fracture toughness increased from 7.6 ± 0.8–10.4 ± 0.5 MPa·m 1/2 ascribed to the novel toughening mechanisms.
研究领域:
材料科学
·
陶瓷工程
·
复合材料
·
仿生材料
·
结构陶瓷
·
断裂力学
✓ 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）