Materials Research Express
·
2020
·Vol. 7
·期 1
·016438
·
IF 1.929
Yong Lian,Xianyi Dai,Jin Zhang
In the present work, particles of SiC were applied to the micro-arc oxidation (MAO) treatment of Ti6Al4V, characterization of MAO coatings with different SiC particle concentration were evaluated. X-Ray Diffraction (XRD) and Scanning Electron Microscope (SEM) results show that the structure and morphology of MAO ceramic coatings could change with different amounts of SiC in the electrolyte. Both of the number and size of the pores on the ceramic coating surface were decreased, while the layer thickness increased with the increase in SiC particles in the electrolyte. A dense double-layer structure coating composed of a Ti-based layer and a SiC-based layer with a thickness of about 40 μm was prepared. It was shown that the addition of SiC particles participated in the process of micro-arc oxidation and changed the microstructure of MAO coating.
研究领域:
材料科学
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POLYMER RESEARCH
·
2022
·Vol. 29
·期 11
·1-14
·
IF 3.061
Zhang Zhao Xin,Yang Shang Ke,Shen Jun Wei,Yang Jia,Bian Jun,Zhang Ai Ping,Lin Hai Lan,Chen Dai Qiang
In order to systematically investigate the dependence of the properties of nanocomposites on the shape of nanofillers, including spherical and fibrous, and the contents and its special arrangement, polyimide (PI) as matrix, nano-silicon carbide particles (SiC p ) and whisker (SiC w ) as fillers were applied to prepare PI nanocomposite films by in-situ polymerization. FTIR and XRD tests verified the successful polymerization of SiC/PI nanocomposites. FESEM observations showed that both SiC p and SiC w nanofillers were uniformly dispersed in the PI matrix during in-situ polymerization and contributed to the improvements of properties. Compared with pure PI film, addition of SiC nanofillers enhanced obviously the heat resistance and the thermal stabilities of PI nanocomposites, as verified by TGA. Tensile tests indicated that the mechanical properties of PI nanocomposites enhanced with increasing SiC nanofillers. Moreover, SiC w was more prominent than SiC p in the reinforcement of PI nanocomposites. Due to the influences of dielectric properties by the changes of the spatial arrangement and the local distribution of electric field of the nanofillers in PI matrix, the dielectric constant of 3wt.%SiC p /PI and 3wt.%SiC w /PI nanocomposites reached 4.3 and 5.6, respectively. Compared with pure PI film, the dielectric constants of SiC p /PI and SiC w /PI nanocomposites were enhanced by 26% and 64%, respectively. In comparison, PI nanocomposites containing SiC w possessed higher effective permittivity than those containing SiC p under the same nanofillers concentration. This work is expected to show great significance to understand the microscopic mechanism of PI dielectric nanocomposites for high energy-storage applications.
研究领域:
材料科学
·
电气工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Marine Science and Engineering
·
2023
·Vol. 11
·期 3
·520
·
IF 2.9
Jingguo Fu,Yihe Sun,Jingye Wang,Hongpeng Zhang,Jifeng Zhang,Yulong Ji
A fluorine-free cerium palmitate superhydrophobic surface on an aluminum plate was fabricated via a two-step electrodeposition method. The mechanical durability, anti-corrosion performance, water repellency and drag reduction properties were tested. The results indicate that a superhydrophobic surface with a densely packed convex island shape with micro-pores and nano-scale strips was formed on the aluminum plate. Furthermore, the as-prepared surface exhibits excellent water-repelling ability with a water contact angle of 162.3° and a sliding angle of 1.5°. Owing to the protective effect of the convex island structure on the surface, the surface also shows superb mechanical durability, which is a shortcoming of ordinary electrodeposited surfaces. Moreover, compared with bare aluminum, the corrosion inhibition efficiency of the superhydrophobic surface is 99.55% and the surface drag decreases by 65.3% at a lower flow rate. Therefore, it is believed that the environmentally friendly fluorine-free superhydrophobic surface has promising potential applications in marine engineering.Keywords:superhydrophobic surface;electrodeposition;SiC particles;corrosion resistance;drag reduction
研究领域:
材料科学
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海洋工程
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS CHARACTERIZATION
·
2017
·
IF 2.714
Baisong Guo,Xinming Zhang,Xi Cen,Xinhua Wang,Min Song,Song Ni,Jianhong Yi,Tao Shen,Yong Du
By hybridizing carbon nanotubes (CNTs) into SiC reinforced Al matrix composites , a novel composite was fabricated to achieve excellent mechanical properties and low coefficient of thermal expansion simultaneously. The study demonstrated that the CNTs can help to acquire the uniform dispersion of SiC particles in the Al matrix, because of their interaction during ball milling and hot rolling processes. In addition, the results revealed that such design optimizes both the mechanical and thermal properties, due to homogeneous microstructure as well as tight and uniform interfaces induced by the addition of CNTs. Strengthening mechanism and Sideridis's model were used to discuss the effects of the CNTs on the mechanical and thermal properties. This study opens up an unexplored avenue for simultaneous improvement of the mechanical and thermal properties of metal matrix composites .
研究领域:
材料科学
·
力学
✓ 已验证
产品关联
DOI
高影响因子
POWDER METALLURGY
·
2024
·
IF 1.9
Xue Feng Wang,Li Tao Chen,Yong Sun,Zhao Zhao Lv,Yu Bo Jia,Yong Chun Guo,Hua Hui Yi
In order to uniformly distribute SiCp in the aluminium matrix and prepare SiCp/Al composites with high mechanical and damping properties, a preparation method of colloidal dispersion and suction filtration was developed. It was observed from the microstructure of the composites that the SiCp/Al composites prepared by colloidal dispersion and suction filtration method had good interfacial structures, and the interfacial reaction between SiCp and aluminium matrix was effectively inhibited. Tensile mechanical properties at room temperature and damping properties in the temperature range of 25 °C to 300 °C were tested for the SiCp/Al composites with volume fractions of 5% to 10%. The results showed that SiCp/Al composites have excellent mechanical and damping properties when the volume fraction of SiCp was 7%. This is because SiCp were uniformly distributed in the aluminium matrix, and formed a good interfacial bond with the aluminium matrix, which benefitted both the interfacial slip loss and the strengthening effect of SiCp.
研究领域:
材料科学
·
力学
✓ 已验证
DOI
高影响因子
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
·
2022
·
IF 6.044
Y. Xing,N.Y. Li,C.J. Li,P. Gao,H.D. Guan,C.M.Y. Yang,C.J. Pu,J.H. Yi
SiC particles (SiC p ) reinforced Al matrix composites as the one of the most representative ones in the field of metal matrix composites , and many researches about the enhancement effect of SiC p size on mechanical properties of SiC p /Al composites have mainly focused on the comparison of micron-sized and nano-sized SiC p . In this paper, low-cost submicron-sized SiC p with rare attention was used as novel reinforcements, and the enhancement effect was compared with that of nano-sized SiC p . At the same time, a strategy of oxidation treatment for SiC p is developed in the field of powder metallurgy , and related work has been carried out. Raw submicron-sized SiC p (hereafter named SiC smp ) and raw nano-sized SiC p (hereafter named SiC np ) were calcined at 1100 °C. Then, SiC smp (raw and oxidized) and SiC np (raw and oxidized) were used as reinforcements to prepare Al matrix composites with different reinforcement content by powder metallurgy. The enhancement effect of raw SiC np is slightly better than that of raw SiC smp when the content is below 7 vol%. Although the agglomerations of oxidized SiC p were found owing to increased agglomeration tendency after oxidation treatment for SiC p , the tensile strength of composites were enhanced significantly, especially for SiC np /Al composites. Furthermore, the ductility of SiC smp /Al composites was also improved after calcining for SiC smp and thus excellent comprehensive mechanical properties were obtained.
研究领域:
材料科学
·
机械工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Zhaozhao Lv,Jianjun Sha,Guanzhang Lin,Jin Wang,Yongchun Guo,Shengquan Dong
In recent years, the research of hybrid composites reinforced by multiple reinforcements has received increasing attention because these composites have great potential to be tailored for various applications. In the present work, hybrid aluminum (Al) matrix composites reinforced with SiC particles and carbon fibers (SiC p -C fs /Al composites) were fabricated by the colloidal dispersion and suction filtration method. It was found that SiC p -C fs /Al composites had a dense structure and the carbon fibers and SiC particles were uniformly distributed in the Al matrix. The mechanical properties of SiC p -C fs /Al composites with different reinforcement volume fractions were investigated. The results showed that the SiC p -C fs /Al composites exhibited high tensile strength and elastic modulus (tensile strength 207 MPa and elastic modulus 92 GPa) when the volume fraction of SiC particles was 5% and the volume fraction of carbon fiber was 7%, which were significantly higher than that of SiC p /Al composites with 5% volume fraction of SiC particles (tensile strength 112 MPa and elastic modulus 80 GPa). The homogeneous distribution of carbon fibers and SiC particles in the Al matrix, which serves as co-reinforcing, is responsible for the high tensile strength and elastic modulus of SiC p -C fs /Al composites. The coefficient of thermal expansion (CTE) of SiC p /Al composites and SiC p -C fs /Al composites were measured at temperatures ranging from 25 °C and 400 °C. The results showed that the addition of carbon fibers caused the CTE of SiC p -C fs /Al composites to be much lower than that of SiC p /Al composites.
研究领域:
材料科学
·
机械工程
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2018
·
IF 3.057
Chenxu Liu,Shuguang Zhang,Ruonan Ji,Peng Wang,Jin Zhang,Yu Tian,Yonggang Meng,Yedong He
Semiconductor particles doped Al 2 O 3 coatings were prepared by cathode plasma electrolytic deposition in Al(NO 3 ) 3 electrolyte dispersed with SiC micro- and nano-particles (average particle sizes of 0.5–1.7 µm and 40 nm respectively). The effects of the concentrations and particle sizes of the SiC on the microstructures and tribological performances of the composite coatings were studied. In comparison with the case of dispersing with SiC microparticles, the dispersion of SiC nanoparticles in the coatings was more uniform. When the concentration of SiC nanoparticles was 5 g/L, the surface roughness of the composite coating was reduced by 63%, compared with that of the unmodified coating. Friction results demonstrated that the addition of 5 g/L SiC nanoparticles reduced the friction coefficient from 0.60 to 0.38 and decreased the wear volume under dry friction . The current density and bath voltage were measured to analyze the effects of SiC particles on the deposition process. The results showed that the SiC particles could alter the electrical behavior of the coatings during the deposition process, weaken the bombardment of the plasma, and improve the structures of the coatings.
研究领域:
材料科学
·
表面工程
✓ 已验证
DOI
高影响因子
COMPOSITES PART B-ENGINEERING
·
2022
·
IF 11.322
Kan Liu,Yishi Su,Xiaozhen Wang,Yunpeng Cai,He Cao,Qiubao Ouyang,Di Zhang
The incorporation of micro- and nano-sized SiC particles (micro- & nano-SiCps) into Al matrix constituted the micro- & nano-SiCp/Al composites through powder metallurgy . A unique ultrafine-grained (UFG) microstructure with micro-SiCps distributed among Al grains and most of nano-SiCps dispersed in grain interiors is characterized. Based on this, the synergetic constraint of dual-scale reinforcements on deformation of Al matrix is employed to enhance dislocation accumulation through increased SiCp/Al interface area and Orowan pinning effect, resulting in an improved strain hardening capacity. Compared with 10 vol% micro-SiCp/Al composites, the composites with 1 vol% nano-SiCps and 9 vol% micro-SiCps exhibit notable tensile properties of 285 MPa in yield strength , 374.7 MPa in ultimate strength and 11.3% in total elongation, increased by 32.6%, 28.7% and 37.8%, respectively, while remain a comparable Young's modulus of 94.6 GPa. Theoretical analysis proves that the dominant strengthening mechanism in micro- & nano-SiCp/Al composites is dislocation strengthening, different from the load transfer in individual micro-SiCp/Al composites. Our work provides inspirations for fabricating high-modulus Al matrix composites with simultaneously enhanced strength and ductility.
研究领域:
材料科学
·
力学
✓ 已验证
DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2025
·
IF 6.1
Jingsi Wang,Shuang Liu,Guibin Lou,Ya Chen,Haozhe Pang,Yachao Song,Syed Mesum Raza Naqvi,Kai Zhou,Zongjun Tian,Muhammad Ali Nasir,Dongsheng Wang,Lida Shen
High infrared emissivity coatings have important engineering value in aerospace and electronic devices. In this study, a new method for preparing high infrared emissivity coatings using magnetic field-assisted jet electrodeposition was prepared. The magnetic field-assisted jet electrodeposition technique can be used to prepare coatings with rough structures, and the infrared emissivity of nickel particle coatings can reach 0.80 at a magnetic field intensity of 100 mT, which is significantly improved compared with the nickel coatings (0.155) prepared by conventional electrodeposition. A nickel-based SiC composite coating with high infrared emissivity was prepared by combining magnetic field-assisted jet electrodeposition with SiC particles. Compared with the nickel particle coating, the infrared emissivity of the nickel-based SiC composite coating is further improved. At a concentration of 6 g/L SiC particles, the infrared emissivity of the nickel-based SiC composite coating reached 0.94. The synergistic effect of magnetic field-assisted jet electrodeposition and SiC particles can realize the nickel coatings into coatings with high infrared emissivity.
研究领域:
材料科学
·
电化学
·
红外技术
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2025
·
IF 6.2
Tianzhan Shen,Cuiyan Li,Haibo Ouyang,Mengyao He,Sirui Wu,Li Wang,Qianqian Chen,Yulei Zhang,Jian Wei
To enhance ablation resistance in (Ta₀.₂Nb₀.₂Ti₀.₂Hf₀.₂Zr₀.₂)C–SiC (HEC–SiC) ceramics, the influence of SiC particle size on microstructure and ablation behavior was examined. With the addition of 20 wt% fine SiC particles, its relative density increases from 91.23% to 97.79%, and the grain size of the HEC phase decreased from 3.58 to 0.79 μm. The fine SiC particles facilitated the formation of a continuous SiC network, thereby enhancing the thermal conductivity from 6.94 to 22.35 W/mK. This enhanced thermal conductivity contributed to reducing the ablation temperature from 2358 to 1721 °C during the ablation. The HEC-SiC sample with 0.5 μm fine SiC particles added exhibits a mass and linear ablation rate of 0.05 mg/s and 0.67 µm/s. The superior ablation resistance can be attributed to the reduced ablation temperature, altering the preferential oxidation sequence. This change in preferential oxidation led to the formation of a compact oxide scale with a multi-layer structure.
研究领域:
材料科学
·
陶瓷
·
热防护系统
·
烧蚀
·
微观结构工程
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2020
·
IF 3.83
Wei Guo,Jing Hou,Tiesong Lin,Peng He
This study focused on joining high volume fraction SiC particles reinforced aluminum matrix composites (55 vol% SiC p /Al) with 50SnO–20ZnO–30P 2 O 5 (SZP) glass directly in air. Prior to joining, various properties of the SZP glass and its wettability on the composites were investigated. The results showed that the coefficient of thermal expansion of the glass was 10.58 × 10 -6 /°C (20–369 °C), which closely match with 55 vol% SiC p /Al composites. The glass transition, crystallization, and softening temperature were identified to be 369, 397, and 486 °C, respectively. Subsequent wetting tests confirmed excellent wettability of the glass on the composites. The joint exhibited sound bonding that was free of defects when brazed at 550 °C for 10 min Zn 2 P 2 O 7 was formed adjacent to the composites due to the crystallization of the glass. The mechanical properties of the joint were proven to be suitable, exhibiting an average shear strength of 55.3 MPa.
研究领域:
材料科学
·
焊接工程
✓ 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）