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Articles de revues sur le sujet « Al2O3 composite »

Auteur : Grafiati
Publié le 7 juin 2025
Mis à jour le 2 août 2025

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1

Zhang, Qiang, Shanliang Dong, Shuai Ma, et al. "Microstructure and compressive behavior of lamellar Al2O3p/Al composite prepared by freeze-drying and mechanical-pressure infiltration method." Science and Engineering of Composite Materials 27, no. 1 (2020): 1–9. http://dx.doi.org/10.1515/secm-2020-0001.

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AbstractInfiltrated molten Al matrix by mechanical-pressure infiltration method into the ceramic scaffold prepared by freeze-drying technology could prepare dense lamellar Al matrix composites without damage of the biomimetic microstructure of the scaffold. However, the investigation of lamellar Al matrix composites prepared by freeze-drying and mechanical-pressure infiltration method has not been fully understood yet. In the present work, the Al2O3 scaffold with pearl layer structure was prepared by freezing-dry method, and eventually the lamellar Al2O3p/Al composite was fabricated by mechani
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Zygmuntowicz, Justyna, Katarzyna Konopka, Marek Krasnowski, et al. "Characterization of Al2O3 Matrix Composites Fabricated via the Slip Casting Method Using NiAl-Al2O3 Composite Powder." Materials 15, no. 8 (2022): 2920. http://dx.doi.org/10.3390/ma15082920.

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This work aimed to characterize Al2O3 matrix composites fabricated by the slip casting method using NiAl-Al2O3 composite powder as the initial powder. The composite powder, consisting of NiAl + 30 wt.% Al2O3, was obtained by mechanical alloying of Al2O3, Al, and Ni powders. The composite powder was added to the Al2O3 powder to prepare the final powder for the slip casting method. The stained composite samples presented high density. EDX and XRD analyses showed that the sintering process of the samples in an air atmosphere caused the formation of the NiAl2O4 spinel phase. Finally, the phase com
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Konopka, Katarzyna, Marek Krasnowski, Justyna Zygmuntowicz, Konrad Cymerman, Marcin Wachowski, and Paulina Piotrkiewicz. "Characterization of Al2O3 Samples and NiAl–Al2O3 Composite Consolidated by Pulse Plasma Sintering." Materials 14, no. 12 (2021): 3398. http://dx.doi.org/10.3390/ma14123398.

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The paper describes an investigation of Al2O3 samples and NiAl–Al2O3 composites consolidated by pulse plasma sintering (PPS). In the experiment, several methods were used to determine the properties and microstructure of the raw Al2O3 powder, NiAl–Al2O3 powder after mechanical alloying, and samples obtained via the PPS. The microstructural investigation of the alumina and composite properties involves scanning electron microscopy (SEM) analysis and X-ray diffraction (XRD). The relative densities were investigated with helium pycnometer and Archimedes method measurements. Microhardness analysis
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Zhao, Guo Long, Chuan Zhen Huang, Han Lian Liu, Bin Zou, Hong Tao Zhu, and Jun Wang. "Synthesis of Al2O3 Ceramics Matrix Composites by Thermal Explosion under Pressure and Hot Pressing." Advanced Materials Research 690-693 (May 2013): 534–37. http://dx.doi.org/10.4028/www.scientific.net/amr.690-693.534.

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Three kinds of Al2O3 ceramics matrix composites, such as Al2O3-TiB2, Al2O3-SiC and Al2O3-TiC, were prepared by two steps, which were synthesis of the composites by thermal explosion under a pressure of 20MPa and hot pressing of the composites at 1700°C under a pressure of 32MPa respectively. The preparation process, the composition and the microstructure of the composites were investigated in detail. The Gibbs free energy and the adiabatic temperature (Tad) of three exothermic synthesis reactions were calculated. Disc-shaped and elongated TiB2 grains were synthesized in the Al2O3-TiB2 composit
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Song, Ke Xing, Ping Liu, Bao Hong Tian, Qi Ming Dong, and Jian Dong Xing. "Stabilization of Nano-Al2O3p/Cu Composite after High Temperature Annealing Treatment." Materials Science Forum 475-479 (January 2005): 993–96. http://dx.doi.org/10.4028/www.scientific.net/msf.475-479.993.

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Al2O3 dispersion strengthened copper composite (Al2O3p/Cu composite) was produced by internal oxidation. The hardness and electrical conductivity of the produced Al2O3p/Cu composite (0.60 wt.% Al2O3) subjected to high temperature annealing treatments after different cold work deformations have been investigated; the microstructures of the composite have also been analyzed by TEM. Results show that the microstructure of the composite is characterized by an uniform distribution of nano-Al2O3 particles in Cu-matrix; the composite can maintain more than 91% hardness retention after 1h, 1000°C anne
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Lin, Huanran, Xiuhua Guo, Kexing Song, Jiang Feng, Shaolin Li, and Xiangfeng Zhang. "Synergistic strengthening mechanism of copper matrix composite reinforced with nano-Al2O3 particles and micro-SiC whiskers." Nanotechnology Reviews 10, no. 1 (2021): 62–72. http://dx.doi.org/10.1515/ntrev-2021-0006.

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Abstract Although Cu–Al2O3 composites have good comprehensive performance, higher mechanical properties and arc erosion resistance are still required to meet heavy-duty applications such as electromagnetic railguns. In this work, a novel hybrid SiCw/Cu–Al2O3 composite was successfully prepared by combining powder metallurgy and internal oxidation. The microstructure and mechanical behavior of the SiCw/Cu–Al2O3 composite were studied. The results show that nano-Al2O3 particles and micro-SiCw are introduced into the copper matrix simultaneously. Well-bonded interfaces between copper matrix and A
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Wang, Li-li, Xiu-Feng Wang, Xu Ding, and Jian-feng Zhu. "Sintering behavior and property of bioglass modified HA-Al2O3 composite." Science of Sintering 44, no. 3 (2012): 265–70. http://dx.doi.org/10.2298/sos1203265w.

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The bioglass modified HA-Al2O3 composites were successfully fabricated by mixing HA, synthesized by wet chemical method between precursor materials H3PO4 and Ca(OH)2, with 25wt% Al2O3 and different content of bioglass (5%, 25%, 45%, 65wt%) respectively, with a mole fraction of 53.9%SiO2, 22.6%Na2O, 21.8%CaO, and 1.7wt%P2O5, sintered in air at various temperatures (750-950?C) for 2h. when the content of bioglass is below 45wt% in the composite, HA decomposes completely and transforms to ?-TCP. The main phase in this case are ?-TCP, Al2O3 and Ca3(AlO3)2.When the content of bioglass is above 45wt
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Cai, Yan Qing, Zhi Fa Wang, Li Xue Yu, Jing Long Bu, Rong Lin Wang, and Rui Sheng Wang. "Effect of Molar Ratio of MgO/Al2O3 on the Performance of MgO-Al2O3-Fe2O3 Composite." Advanced Materials Research 284-286 (July 2011): 242–45. http://dx.doi.org/10.4028/www.scientific.net/amr.284-286.242.

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The MgO-Al2O3-Fe2O3 composite was prepared at 1600°C for 3h with magnesia powder and alumina powder as raw materials and with ferric oxide powder as additive. The effect of the molar ratio of MgO/Al2O3 on the sintering and thermal shock resistance of the composite materials was studied. The results showed that increasing the molar ratio of MgO/Al2O3 could improve the densification of the Al2O3-Fe2O3 composites, with the molar ratio of MgO/Al2O3 increased from 3 to 5, densification of the composites didn't increased but decreased. The optimum molar ratio of MgO/Al2O3 of the Al2O3-Fe2O3 composit
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Jiang, Long Tao, Gao Hui Wu, Min Zhao, Qiang Zhang, Norio Kouno, and Hideo Saito. "Effects of Particle Size on Microstructure of the Matrix Alloy in Aluminum Matrix Composites." Materials Science Forum 546-549 (May 2007): 1655–59. http://dx.doi.org/10.4028/www.scientific.net/msf.546-549.1655.

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Aluminum matrix composites, reinforced by 0.15μm and 5μm Al2O3 particles with 40% volume fractions were fabricated by squeeze casting technique. The microstructure characterization near the interfaces of Al2O3p/1070Al composites was investigated by SADP and HREM techniques. Results showed that high-density dislocations were generated in the 5μm-Al2O3p/Al composite due to the thermal mismatch stress. In contrast, the matrix of the 0.15μm-Al2O3p/Al composite appeared to be nearly free dislocations and some “micro distortion areas” of 1-5nm were observed, which was attributed to the dispersion of
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Raghvan, Sonu, Prachi Singhal, Sunita Rattan, and Ajay Kumar Tyagi. "Effect of Nanoalumina on Physical and Thermal Properties of Polypropylene-Glass Fiber Reinforced Nanocomposites." Asian Journal of Chemistry 35, no. 8 (2023): 1943–50. http://dx.doi.org/10.14233/ajchem.2023.28197.

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The present study examines the effect of nanoalumina on the mechanical and thermal properties of glass fiber and elastomer reinforced PP/EPDM/GF/Al2O3 with an aim to develop suitable composite material for orthotics. In present study, PP/GF, PP/EPDM/GF composite and PP/EPDM/GF/Al2O3 nanocomposites with specific composition were fabricated using melt-blending technique. Prepared composites were characterized through scanning electron microscopy (SEM), X-ray diffraction (XRD), thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The mechanical characteristics including t
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11

Konopka, Katarzyna, Justyna Zygmuntowicz, Marek Krasnowski, Konrad Cymerman, Marcin Wachowski, and Paulina Piotrkiewicz. "Pulse Plasma Sintering of NiAl-Al2O3 Composite Powder Produced by Mechanical Alloying with Contribution of Nanometric Al2O3 Powder." Materials 15, no. 2 (2022): 407. http://dx.doi.org/10.3390/ma15020407.

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NiAl-Al2O3 composites, fabricated from the prepared composite powders by mechanical alloying and then consolidated by pulse plasma sintering, were presented. The use of nanometric alumina powder for reinforcement of a synthetized intermetallic matrix was the innovative concept of this work. Moreover, this is the first reported attempt to use the Pulse Plasma Sintering (PPS) method to consolidate composite powder with the contribution of nanometric alumina powder. The composite powders consisting of the intermetallic phase NiAl and Al2O3 were prepared by mechanical alloying from powder mixtures
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12

Yang, Xue Rui, Bao Hong Tian, Yi Zhang, and Yong Liu. "Hot Deformation Behavior of Multi-Size Al2O3 Particles Dispersion Strengthened Copper Base Composite." Advanced Materials Research 721 (July 2013): 270–73. http://dx.doi.org/10.4028/www.scientific.net/amr.721.270.

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The multi-size Al2O3 particles dispersion strengthened copper base composite (i.e. Al2O3/Cu-0.6%Al2O3 composite) was prepared by the vacuum hot-press sintering-internal oxidizing method. The hot deformation behavior of Al2O3/Cu-0.6%Al2O3 composite was investigated by the isothermal compression tests at the temperature range from 600°C to 950°C and strain rates of 0.001 s-1 and 1s-1 respectively with a Gleeble-1500D thermal simulator system. The results show that the flow stress-strain curves of Al2O3/Cu-0.6%Al2O3 composites indicate the softening mechanism of recrystallization. The flow stress
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Li, Bin, Gui Min Liu, Jian Hua Du, Xiao Hui Zheng, and Qing Song Yong. "Study on the Electrical Arc Ablation Performance of Al2O3 Reinforced Cu-Matrix Composites." Advanced Materials Research 557-559 (July 2012): 267–71. http://dx.doi.org/10.4028/www.scientific.net/amr.557-559.267.

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The Al2O3 particle reinforced Cu-based composites (Al2O3/Cu) were prepared by internal oxidation technology. The electrical arc ablation performance of Al2O3/Cu composite was compared with copper H62 through a series of ablation experiments. The results indicate that both the quality lost and ablation diameter of copper H62 samples are larger than those of Al2O3/Cu composites in condition of the same ablating current. The large ablation pits observed by scanning electron microscopy (SEM) indicated that the arc ablation of copper H62 is concentrate and serious. The result of energy dispersive s
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14

Wada, Masashi, Tohru Sekino, Takafumi Kusunose, Tadachika Nakayama, and Koichi Niihara. "Microstructural, mechanical, and electrical characteristics of alumina-reinforced ytterbia-stabilized cubic zirconia-based composites." Journal of Materials Research 19, no. 5 (2004): 1455–60. http://dx.doi.org/10.1557/jmr.2004.0194.

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Al2O3-dispersed Yb2O3-stabilized cubic-ZrO2 (YbSZ) composites are fabricated by pressureless sintering of composite powders to obtain fine and homogeneous microstructures by the solution chemistry route. Al2O3 particles are deposited on ZrO2 powders by the precipitation of aluminum nitrate followed by calcination in air. The sinterability of the composites was affected by the calcination temperature. Microstructures of the sintered bodies are dependent on the Al2O3 content. For the5 vol% Al2O3-dispersed composite, fine Al2O3 particles were mainly located insidethe grains of zirconia, whereas r
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15

Zhang, Kun, Wang Fen, Jianfeng Zhu, and Huae Wu. "Mechanical properties and microstructure of Al2O3/TiAl in situ composites doped with Cr and V2O5." Science of Sintering 44, no. 1 (2012): 73–80. http://dx.doi.org/10.2298/sos1201073z.

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Al2O3/TiAl in situ composites doped with Cr and V2O5 were successfully prepared from Ti, Al, TiO2, Cr and V2O5 by hot pressing. The effect of in situ formed Al2O3 content on the phase composition, microstructure and mechanical properties of Al2O3/TiAl composites were investigated. The results show that the as-synthesized composites mainly consisted of ?-TiAl/?2-Ti3Al matrix and dispersive Al2O3 reinforcing phases. The in situ formed fine Al2O3 ceramic particles mainly disperse on the grain boundaries of TiAl, resulting in refinement of TiAl matrix, which improves the mechanical properties of t
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16

K., Bharadwaja, S. Rao S., and Babu Rao T. "Mechanical Behavior & Analysis of Epoxy, Al2O3 Composites." International Journal of Engineering and Advanced Technology (IJEAT) 9, no. 3 (2020): 3262–65. https://doi.org/10.35940/ijeat.C5826.029320.

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In this paper, an intelligent report has been planned for to assess epoxy composite network Epoxy composite execution of Al2O3 particles remembered for epoxy composite resin. A ultrasonic blending method applied to accomplish homogenous dissemination of particles addicted to epoxy pitch. Various mechanical and Tribological tests, for example, bending (three(3) point) test, Charpy Impact test & hardness are perform to check mechanical properties & wear execution of Al2O3+ Epoxy composites. These composites showed expanded bowing quality and effect quality because of the absorption of Al
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Zhang, Qiang, Henry Hu, and Jason Lo. "Solidification of Discontinuous Al2O3 Fiber Reinforced Magnesium (AM60) Matrix Composite." Defect and Diffusion Forum 312-315 (April 2011): 277–82. http://dx.doi.org/10.4028/www.scientific.net/ddf.312-315.277.

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Magnesium matrix composites have great potential for aerospace and automotive applications due to its low density and superior specific stiffness. The magnesium composites can often be reinforced by either particles or/and fibers. There were certain studies on solidification behaviors of particle-reinforced magnesium composites in the past. However, development of grain structure during the solidification of fibre-reinforced magnesium is barely investigated. In this work, an Al2O3 fiber reinforced magnesium (AM60) matrix composite (AM60/Al2O3,f) was cast. The solidification behavior of the cas
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Vuddagiri, Hari Kiran, Sivasankara Raju Rallabandi, Srinivas Vadapalli, and Thimothy Pandi. "Assessment of mechanical and tribological performance of hybrid Al/MoS2/Al2O3 composite by GFRA." Metallurgical and Materials Engineering 28, no. 1 (2022): 79–102. http://dx.doi.org/10.30544/764.

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This work emphasizes the mechanical and tribological performance of Al-Si/Al2O3/MoS2 hybrid matrix composites. The composites are reinforced by varying weight percentages of Al2O3 (8%, 12%, and 16%) and MoS2 (0%, 2%, and 4%), and were prepared by stir casting. As the weight percentage of Al2O3 in a composite grows, so does its hardness and tensile strength. The addition of 2% wt. MoS2 enhances the specific strength and tribological properties, according to the research. However, when compared to other composites studied, the Al/16% Al2O3 composite had improved mechanical properties. MoS2 also
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Abbasi, M., and SA Sajjadi. "Manufacturing of Al–Al2O3–Mg multilayered nanocomposites by accumulative roll bonding process and study of its microstructure, tensile, and bending properties." Journal of Composite Materials 52, no. 2 (2017): 147–57. http://dx.doi.org/10.1177/0021998317703693.

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Accumulative roll bonding is used for producing multilayered composites, with exciting mechanical properties, via the creation of bonding between dissimilar metallic layers. In this study for the first time, Al–Mg multilayered composites reinforced with nano-Al2O3 particles were produced by the accumulative roll bonding process at different temperatures. However, there was a problem regarding the adhesion of the nanoceramic particles with each other and with the sheet metals. To avoid these disadvantageous effects of the Al2O3 particle addition and to create better adhesion at interfaces, Al a
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Alalkawi, H. J. M., Asifa Mahdi Mohammed, and Raad Hameed Majid. "Influence of Stirring Speed on Mechanical Properties for Cast Nano-Particulate AA7075-Al2O3 Composites." Al-Nahrain Journal for Engineering Sciences 22, no. 2 (2019): 109–16. http://dx.doi.org/10.29194/njes.22020109.

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Aluminum metal matrix composites are widely employed for improving the mechanical properties. Various fabrication routes like liquid state, solid state and liquid-solid state are currently available for producing these materials. The objective of the present work is the fabrication of nano particulate composites AA7075-Al2O3 with different amount of nano particles (20-30 nm) reinforced material Al2O3 (2, 4 and 6 wt%) using stir casting technique at three stirring speeds (300, 850 and 1500 rpm). Tensile tests of these composites were carried-out to obtain the mechanical properties (ultimate str
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Avinash, L., Hemanth Kumar, Adithya Parthasarathy, K. N. Varun Kumar, and Basavaraj Sajjan. "The Effect of Ceramic Reinforcement on the Microstructure, Mechanical Properties and Tribological Behavior of Al-7.5%Si-0.5%Mg Alloy." Applied Mechanics and Materials 867 (July 2017): 3–9. http://dx.doi.org/10.4028/www.scientific.net/amm.867.3.

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In this investigation, A357 (Al-7.5%Si-0.5%Mg) alloy/Al2O3 composites with various weight fractions (4%, 8%, 10%) were prepared by using permanent mould casting. In addition, A357 alloys were cast for comparison purposes. Microstructure, hardness and tensile properties of these composites were evaluated and compared with as-cast alloy. In addition, tribological properties of these composites were evaluated using a Pin-on-Disc apparatus at a constant sliding velocity of 1m/s and pressure of 0.35 MPa. The microstructure of the composites shows homogenous distribution of Al2O3 plate-like particle
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Wang, Xuchao, Jun Zhao, Enzhao Cui, Xianhua Tian, and Zhefei Sun. "Effect of Interfacial Structure on Mechanical Properties of Graphene Reinforced Al2O3–WC Matrix Ceramic Composite." Nanomaterials 11, no. 6 (2021): 1374. http://dx.doi.org/10.3390/nano11061374.

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The interfacial structures and interfacial bonding characteristics between graphene and matrix in graphene-reinforced Al2O3–WC matrix ceramic composite prepared by two-step hot pressing sintering were systematically investigated. Three interfacial structures including graphene–Al2O3, graphene–Al2OC and graphene-WC were determined in the Al2O3–WC–TiC–graphene composite by TEM. The interfacial adhesion energy and interfacial shear strength were calculated by first principles, and it has been found that the interfacial adhesion energy and interfacial shear strength of the graphene–Al2OC interface
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Ohtsubo, Hideki, Narihito Nakagawa, Kazutoshi Shimizu, Koji Shibata, Atsuyuki Mitani, and Yoshiharu Waku. "Microstructure and High Temperature Strength Characteristics of Unidirectionally Solidified Al2 O3 /GdAlO3 Eutectic Composite." Key Engineering Materials 317-318 (August 2006): 437–40. http://dx.doi.org/10.4028/www.scientific.net/kem.317-318.437.

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Enploying unidirectional solidification, Al2O3/GdAlO3(Gadolinium Aluminum Perovskite:GAP) eutectic composite was fabricated. The Al2O3/GAP eutectic composite obtained has a flexural strength of over 600Mpa above 1500C. The composite also showed plastic deformation above 1550C on the flexural test. The effect of microstructure on mechanical strength at high temperature was investigated. Al2O3/GAP eutectic composites having different microstructure were fabricated by controlling the temperature gradient on unidirectional solidification. It was found that the flexural strength at high temperature
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Yang, Lixia, Fei Wang, Jiahao Liao, Zhaofeng Chen та Zongde Kou. "Microstructure and Mechanical Properties of Unidirectional, Laminated Cf/SiC Composites with α-Al2O3 Nanoparticles as Filler". Nanomaterials 12, № 19 (2022): 3406. http://dx.doi.org/10.3390/nano12193406.

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The effects of an α-Al2O3 nanoparticle filler in the SiC matrix on the mechanical properties and failure mechanism of the unidirectional, laminated carbon fiber-reinforced SiC composites were investigated in this work. First, α-Al2O3 nanoparticles were added to the carbon fiber bundles using a slurry impregnation method, and then the Cf/SiC composite with an α-Al2O3 nanoparticle filler (Cf/SiC-Al2O3) was fabricated using a precursor infiltration and pyrolysis method. The microstructure of the Cf/SiC-Al2O3 composite showed chemical compatibility between the α-Al2O3 and the pyrolysis SiC. The Cf
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Boppana, Satish Babu, Samuel Dayanand, Bharath Vedashantha Murthy, et al. "Development and Mechanical Characterisation of Al6061-Al2O3-Graphene Hybrid Metal Matrix Composites." Journal of Composites Science 5, no. 6 (2021): 155. http://dx.doi.org/10.3390/jcs5060155.

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MMC based on aluminium (Al) were produced for light-weight applications especially in aviation and automobile areas. Present paper deals with the fabrication and mechanical performance of AA6061 matrix composites fortified with Al2O3 (alumina) and graphene particulates. Fluid metallurgy method namely stir casting route was employed for fabricating the hybrid composites. Al2O3p and graphene powder are mixed in different weight fractions in which graphene (1 wt. %) particle reinforcement is held consistent and Al2O3 reinforcement is differed freely with 5, 10 and 15 wt. %. Using optical analyser
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Deynega, G. I., E. S. Lukin, N. A. Popova, and D. O. Efimova. "Mechanostructural properties of Al2O3—ZrO2 ceramic matrix composites reinforced with polycrystalline fibers based on Al2O3." Transaction Kola Science Centre 11, no. 3-2020 (2020): 54–57. http://dx.doi.org/10.37614/2307-5252.2020.3.4.011.

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The article considers the production of composite materials in the Al2O3—ZrO2system by free and vacuum sintering methods, as well as the effectof the introduction of an additive of polycrystalline fibers based on Al2O3on the strengthening of the composites.
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Davies, I. J., G. Pezzotti, A. Bellosi, D. Sciti, and S. Guicciardi. "Mechanical Behaviour of Nickel Aluminide Reinforced Alumina (AL2O3-NiAl) Composites." Advanced Composites Letters 11, no. 6 (2002): 096369350201100. http://dx.doi.org/10.1177/096369350201100601.

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The microstructure and mechanical properties of hot-pressed alumina (Al2O3) matrix composites containing 20, 35, or 50 vol% of nickel aluminide (NiAl) were investigated. The mean Al2O3 grain size was found to decrease from approximately 2.0 μm (monolithic Al2O3) to 1.0 μm for the composite containing 50 vol% NiAl. Composite flexural strength values were lower than both the monolithic Al2O3 and NiAl and attributed to the weakly bonded NiAl particles acting as flaw origins. In contrast to this, the fracture toughness increased with NiAl volume fraction to a maximum of 4.90 MPa·m1/2, thus confirm
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Sekar, K., and Rahul Singh. "Mechanical and Tribological Properties of A7050 Hybrid Composite Reinforced with Nano Al2O3/Micro ZrO2 Particles by Stir Casting Method." Materials Science Forum 969 (August 2019): 576–81. http://dx.doi.org/10.4028/www.scientific.net/msf.969.576.

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The composite plays an important role in the new generation of engineering material with better tribological and mechanical properties. In this paper, the hybrid composites of A7050/Al2O3/ZrO2 with different wt. % of reinforcement materials (0.5, 1, 1.5wt. % ZrO2, and 1wt. % Al2O3 constant for all composites) were fabricated by stir casting method. From the results, it was observed that the good texture in microstructure without defect with an addition of constant 1wt% Al2O3 and varying 0.5, 1and 1.5 wt% ZrO2. The Hardness of hybrid composites is increased by 27% with addition of 1wt % of Al2O
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Yun, Hyesun, Min-Gi Kwak, KeumHwan Park, and Youngmin Kim. "Fabrication, Thermal Conductivity, and Mechanical Properties of Hexagonal-Boron-Nitride-Pattern-Embedded Aluminum Oxide Composites." Nanomaterials 12, no. 16 (2022): 2815. http://dx.doi.org/10.3390/nano12162815.

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As electronics become more portable and compact, the demand for high-performance thermally conductive composites is increasing. Given that the thermal conductivity correlates with the content of thermally conductive fillers, it is important to fabricate composites with high filler loading. However, the increased viscosity of the composites upon the addition of these fillers impedes the fabrication of filler-reinforced composites through conventional methods. In this study, hexagonal-boron-nitride (h-BN)-pattern-embedded aluminum oxide (Al2O3) composites (Al/h-BN/Al composites) were fabricated
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Di, Zhengxian, Zhijia Wang, Xiaoyu Zhang, et al. "Tribological Properties of Al2O3/Graphite-Al2O3 Laminated Composites under Water Lubrication Conditions." Lubricants 12, no. 3 (2024): 81. http://dx.doi.org/10.3390/lubricants12030081.

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High-performance Al2O3/graphite-Al2O3 laminated composites exhibit an excellent self-lubricating ability for moving components, such as sliding shaft sleeves and dynamic seals. The tribological behaviors of Al2O3/graphite-Al2O3 laminated composites should be studied extensively under water working conditions. Here, we attempted to explore the practicability of the Al2O3/graphite-Al2O3 laminated composite as a sealing material from a tribological point of view under water lubrication conditions. The tribological properties and mechanism of friction and wear of laminated composite ceramics were
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Bharath, V., D. H. Ashita, V. Auradi, and Madeva Nagaral. "Influence of variable particle size reinforcement on mechanical and wear properties of alumina reinforced 2014Al alloy particulate composite." FME Transactions 48, no. 4 (2020): 968–78. http://dx.doi.org/10.5937/fme2004968b.

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Al2O3 may be the most important reinforcement in aluminum-based composites that are rising quickly in modern years. The significance of this paper is to study the influence of Al2O3p size variation (i.e. 53 µm and 88 µm) and content (i.e. 9, 12, and 15Wt %) on density, hardness, tensile strength, elongation to fracture and wear studies. During the preparation of each composite, the ceramic reinforcements were introduced in a novel way which involves two-stage additions of reinforcements during liquid stirring. It has been found that because the size of the Al2O3p is reduced, measurement of the
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Mohamed, A., MM Mohammed, AF Ibrahim, and Omyma A. El-Kady. "Effect of nano Al2O3 coated Ag reinforced Cu matrix nanocomposites on mechanical and tribological behavior synthesis by P/M technique." Journal of Composite Materials 54, no. 30 (2020): 4921–28. http://dx.doi.org/10.1177/0021998320934860.

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In this study, copper powder was reinforced with different weight percentages of Al2O3 particles (0, 5, 10, and 15 wt.% Al2O3 coated Ag) to produce Cu-Al2O3 composites by mechanical alloying and uniaxial cold pressing/sintering route. Electro-less deposition was used to coat Al2O3 particles with Ag. The microstructure of the consolidated samples was investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX) elemental mapping. The porosity, microhardness, and wear behavior of the consolidated samples were also investigated as a fun
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Maddaiah, K. Chinna, G. B. Veeresh Kumar, and R. Pramod. "Studies on the Mechanical, Strengthening Mechanisms and Tribological Characteristics of AA7150-Al2O3 Nano-Metal Matrix Composites." Journal of Composites Science 8, no. 3 (2024): 97. http://dx.doi.org/10.3390/jcs8030097.

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Stir-casting with ultrasonic cavitation produced nano-Al2O3-filled AA7150 matrix composites in this study. The SEM microstructure study shows that all composites include nano-Al2O3 particles with consistent particle sizes and homogenous distribution. EDS and XRD showed no secondary phases or impurities in the composite. Optical microscopy showed intense ultrasonic cavitation effects, and nano-Al2O3 particles caused grain refinement in the AA7150 matrix. The composite’s mechanical characteristics improved when the Al2O3 nanoparticle weight percentage (wt.%) increased. With only 2.0 wt.% nano-Al
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Behera, Bishnupriya, Renuprava Dalai, Dinesh Kumar Mishra, and Sushant Kumar Badjena. "Development and Characterization of Al2O3 and SiC Reinforced Al-Cu Metal Matrix Hybrid Composites." Materials Science Forum 978 (February 2020): 202–8. http://dx.doi.org/10.4028/www.scientific.net/msf.978.202.

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The present work deals with the synthesis and characterization of Al-Cu-SiC-Al2O3 hybrid metal matrix composite with varying percentage of Al2O3. The synthesized hybrid composite samples were conventionally sintered at two different sintering temperatures i.e. 500°C and 600°C for 1 hr each. SEM investigation predicts the uniform distribution of reinforcing particles. The SEM and XRD results of the sintered composites revealed the presence of a new intermetallic alloy CuAl2 phase along with Al and SiC phases. It is observed that the density and hardness of Al-Cu-SiC-Al2O3 hybrid composite incre
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Yao, Junlong, Li Hu, Min Zhou, et al. "Synergistic Enhancement of Thermal Conductivity and Dielectric Properties in Al2O3/BaTiO3/PP Composites." Materials 11, no. 9 (2018): 1536. http://dx.doi.org/10.3390/ma11091536.

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Multifunctional polymer composites with both high dielectric constants and high thermal conductivity are urgently needed by high-temperature electronic devices and modern microelectromechanical systems. However, high heat-conduction capability or dielectric properties of polymer composites all depend on high-content loading of different functional thermal-conductive or high-dielectric ceramic fillers (every filler volume fraction ≥ 50%, i.e., ffiller ≥ 50%), and an overload of various fillers (fthermal-conductive filler + fhigh-dielectric filler > 50%) will decrease the processability and m
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Shi, Yong Liang, Zhi Meng Guo, Jun Jie Hao, Tao Lin, and Xian Zeng. "Processing and Abrasive Wear Study of Fe-Al2O3-TiC Composite by Pressureless Ti-Activated Reactive Melt Infiltration." Advanced Materials Research 482-484 (February 2012): 933–37. http://dx.doi.org/10.4028/www.scientific.net/amr.482-484.933.

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Fe-Al2O3-TiC composite were fabricated by pressureless Ti-activated reactive melt infiltration. In this paper, a kind of Al2O3-Ti porous skeleton was prepared to be infiltrated with Fe-2Cr-3C alloy under vacuum. The microstructure and component analysis was investigated by scanning electron microscopy (SEM) and X-ray diffraction analysis (XRD). Subsequently, the wear testing was conducted to investigate the wear resistance of the Fe-Al2O3-TiC composites. The result show that the Fe-2Cr-3C alloy melt can full infiltrate the two kinds of Al2O3-Ti porous skeleton at 1390°C for 2 h. In the Fe-Al2O3
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P.VISWABHARATHY, Dr.A.SENTHILKUMAR, and J.VAIRAMUTHU. "Evaluation of Mechanical Behavior and Microstructure of AA6063 B4C Al2O3 Hybrid Composites." International Journal of Science & Engineering Development Research Volume 2 Issue 5, April-2017, Volume 2 Issue 5, April-2017 (2017): 3–14. https://doi.org/10.5281/zenodo.579698.

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Nowadays the aluminum based composite is enormously used in automobiles, aerospace and structural member due to its proven mechanical properties. The present work focuses on the fabrication of aluminum Alloy 6063 reinforced with boron carbide and Aluminum Oxide composite through stir casting process. This research focuses on the fabrication of AA6063/ 5 % B4C of / Al2O3 in step of 4%, 8% and 12% with the help of stir casting method. Microstructure of fabricated hybrid composites and the tested hybrid composites will be viewed by Scanning Electron Microscope (SEM) and then hardness test is taki
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Guo, Xiu Hua, Ke Xing Song, Shu Hua Liang, Qing Wang, and Yong Peng Wang. "Effect of Electrical Current on Wear Rate of Nano-Al2O3p/Cu Composite." Advanced Materials Research 97-101 (March 2010): 717–23. http://dx.doi.org/10.4028/www.scientific.net/amr.97-101.717.

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The nano-Al2O3p/Cu composite performed in this paper was prepared by internal oxidation. The nano-Al2O3p/Cu composite wire and the Cu-Ag alloy wire were slid against a copper-based powder metallurgy strip under unlubricated conditions. The wear behavior of nano-Al2O3p/Cu composite and Cu-Ag alloy were researched under different currents from 0~50A and sliding distance from 0~72Km. Worn surfaces of the nano-Al2O3p/Cu composite were analyzed by scanning electron microscopy (SEM) and energy dispersive X-ray spectrometry (EDS). The results indicate that the nano-Al2O3p/Cu composite surface is disp
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Adediran, Adeolu Adesoji, Francis Odikpo Edoziuno, Olanrewaju Seun Adesina, et al. "Mechanical Characterization and Numerical Optimization of Aluminum Matrix Hybrid Composite." Materials Science Forum 1065 (June 30, 2022): 47–57. http://dx.doi.org/10.4028/p-m21wne.

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Hybridization of aluminium matrix composite is with a view to offset the properties deficient in one composite reinforcement. The present investigation involves a comparative study of AA6063 matrix composites with single reinforcement of Al2O3, SiC, graphene respectively and various hybridized proportions of the same reinforcements. Physical (density and %porosity) and mechanical (tensile strength, fracture toughness, %elongation, elastic modulus, etc.) properties of composites developed via solidification processing technique were evaluated. The porosity of all the composites falls below the
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Hoseini, M., G. Dini, and M. Bahadori. "Dielectric strength and mechanical properties of epoxy resin filled with self-propagating high-temperature synthesized Al2O3/SiC nanoparticles." Journal of Composite Materials 54, no. 17 (2019): 2231–43. http://dx.doi.org/10.1177/0021998319891202.

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In this study, the rice husk as a source of silica was used to synthesize the Al2O3/SiC composite via the self-propagation high-temperature synthesis (SHS) process. Then, the particle size of the synthesized product was reduced to the nanoscale using a planetary ball mill. Finally, different amounts (5, 10, and 15 wt.%) of Al2O3/SiC nanoparticles were incorporated into an epoxy resin in order to improve the mechanical properties and the dielectric strength of fabricated epoxy-based composites. The results indicated that the Al2O3/SiC composite was successfully synthesized by the SHS process fr
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Sano, Hideaki, Junichi Morisaki, Guo Bin Zheng, and Yasuo Uchiyama. "Effects of CNT Addition on Mechanical Properties, Electric Conductivity and Oxidation Resistance of Al2O3-TiC Composite." Materials Science Forum 761 (July 2013): 83–86. http://dx.doi.org/10.4028/www.scientific.net/msf.761.83.

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Effects of carbon nanotubes (CNT) addition on mechanical properties, electric conductivity and oxidation resistance of CNT/Al2O3-TiC composite were investigated. It was found that flexural strength, Young’s modulus and fracture toughness of the composites were improved by addition of more than 2 vol%-CNT. In the composites with more than 3 vol%-CNT, the oxidation resistance of the composite was degraded. In comparison with Al2O3-26vol%TiC sample as TiC particle-percolated sample, the Al2O3-12vol%TiC-3vol%CNT sample, which is not TiC particle-percolated sample, shows almost the same mechanical
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42

Avinash, L., T. Ramprabhu, Adithya Parthasarathy, K. N. Varun Kumar, and Basavaraj Sajjan. "Wear and Mechanical Behaviour of Hypo-Eutectic Al-7%Si-0.5%Mg Alloy (A357) Reinforced with Al2O3 Particles." Applied Mechanics and Materials 829 (March 2016): 66–72. http://dx.doi.org/10.4028/www.scientific.net/amm.829.66.

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In this study, A357 (Al-7%Si-0.5%Mg) alloy/Al2O3 composites with various volume fractions (4%, 8%, 10%) were prepared by using permanent mould casting. In addition, A357 alloys were cast for comparison purposes. The alloys and composites were given a T6 heat treatment process (solution treatment and artificial ageing), Also microstructure, hardness and tensile properties of these composites were evaluated and compared. In addition, tribological properties of these composites were evaluated using a Pin-on-Disc apparatus at a constant sliding velocity of 1m/s and pressure of 0.35 MPa. The micros
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T. Sathish and R. Saravanan. "Investigation on Mechanical Properties of Kevlar Fiber and Al2O3 – SiC used Nano-polymer Composite." Journal of Environmental Nanotechnology 13, no. 2 (2024): 154–59. http://dx.doi.org/10.13074/jent.2024.06.242641.

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Kevlar is a synthetic fiber that has become well-known all over the globe because of its many industrial uses. It functions well as a composite material and is mostly used in conjunction with other materials. This study discusses the fabrication of epoxy composites with different proportions of Al2O3 and SiC nanoparticles with Kevlar fiber. In this process, SiC, and Al2O3 nanoparticles were added to Kevlar fiber and fabricated the composite by a compressed moulding machine for shear, tensile and impact tests. From these test results, incorporating Al2O3 and SiC nanoparticles with Kevlar fiber
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Cho, Han Gyoung, and Si Young Chang. "Processing, Microstructure and Mechanical Properties of Hybrid Materials with Al-Mg Alloy and its Composites." Materials Science Forum 544-545 (May 2007): 435–38. http://dx.doi.org/10.4028/www.scientific.net/msf.544-545.435.

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The hybrid materials with Al-Mg alloy and its composites reinforced with SiC and Al2O3 particles were prepared by conventional powder metallurgy method. The Al-5wt%Mg and composite mixtures were compacted under a pressure of 400MPa and sintered at 873K for 5h. The obtained hybrid materials with Al-Mg/SiCp composite showed the higher relative density than those with Al-Mg/Al2O3 composite after compaction and sintering. In the composite side of hybrid materials, the SiC particles were densely distributed compared to the Al2O3 particles. The hybrid materials with Al-Mg/SiC composite showed higher
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Prică, Călin, Niculina Sechel, Bogdan Neamțu, et al. "Superalloy/Al2O3 type composite compacts obtained by spark plasma sintering from mechanically alloyed powders." Science of Sintering 54, no. 3 (2022): 335–47. http://dx.doi.org/10.2298/sos2203335p.

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Fe-base Superalloy/Al2O3 type composite compacts were successfully obtained by spark plasma sintering from mechanically alloyed powders. The superalloy powders without Al2O3 and superalloy/Al2O3 type composites powders with 5 and 10 %vol. Al2O3 were synthesized from elemental powders in a high energy planetary mill. The influence of the milling process on particle size evolution has been determined using a Laser Particle Size Analyzer with an analysis field of 0.1-1000 ?m. The composite compacts were obtained by spark plasma sintering. Both, composite powders, and compacts were investigated by
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Choi, Ju-Young, Kyeong-Nam Nam, Seung-Won Jin, et al. "Preparation and Properties of Poly(imide-siloxane) Copolymer Composite Films with Micro-Al2O3 Particles." Applied Sciences 9, no. 3 (2019): 548. http://dx.doi.org/10.3390/app9030548.

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In the current study, poly(imide-siloxane) copolymers (PIs) with different siloxane contents were synthesized and used as a matrix material for PI/Al2O3 composites. The PIs were characterized via their molecular weight, film quality, and thermal stability. Among the PI films, free-standing and flexible PI films were selected and used to prepare PI/Al2O3 composite films, with different Al2O3 loadings. The thermal conductivity, thermal stability, mechanical property, film flexibility, and morphology of the PI/Al2O3 composite films were investigated for their application as heat-dissipating mater
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Omrani, Emad, Afsaneh Dorri Moghadam, Ashish K. Kasar, Pradeep Rohatgi, and Pradeep L. Menezes. "Tribological Performance of Graphite Nanoplatelets Reinforced Al and Al/Al2O3 Self-Lubricating Composites." Materials 14, no. 5 (2021): 1183. http://dx.doi.org/10.3390/ma14051183.

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In the present work, the effect of graphite nanoplatelets (GNPs) on tribological properties of the aluminum (Al), and Al/alumina (Al2O3) composite are studied. GNPs are multilayer graphene sheets which were used as a solid lubricant material. Two sets of composites, Al/GNPs and Al/GNPs/Al2O3 with varying amounts of reinforcements, were synthesized by powder metallurgy that involves cold compaction followed by hot compaction. The hardness of the composites increased with the addition of GNPs and Al2O3. The Al/GNPs composite with 1 wt.% of GNPs (Al/1GNPs) showed a 20% increase in hardness wherea
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Wang, Haijun, Kaixuan Shao, Yuhao Niu, Jialong Qiao, Hongbo Pan, and Shengtao Qiu. "Influence mechanism of rare earth (RE) on inclusion modification in non-oriented silicon steel." Metallurgical Research & Technology 121, no. 6 (2024): 604. http://dx.doi.org/10.1051/metal/2024074.

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Effects of rare earth (La+Ce) on inclusions in hot-rolled band of 3.0∼3.3%Si-0.8∼1.0%Al non-oriented silicon steel was studied using industrial trials, scanning electron microscope (SEM) and thermodynamic analysis. Furthermore, combining Heterogeneous Nucleation Theory with Edge-to-Edge Matching (E2EM) model, the formation mechanism of complex inclusions was also investigated. Rare earth (La+Ce) would promote the spheroidization and coarsening of inclusions, and then transform into regular and near circle morphology composite inclusions of rare earth. The low content of rare earth (21 ppm) mai
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Karthik, N., S. Prabhu, Sahil Santosh, and Ashutosh Singh. "Tribological Performance and Microstructural Analysis of an Aluminium Alloy Based Hybrid Composite Produced by P/M." Applied Mechanics and Materials 766-767 (June 2015): 320–23. http://dx.doi.org/10.4028/www.scientific.net/amm.766-767.320.

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In the field of material science and engineering, there is a great impact ever since the invention of composites materials. High strength to weight ratio provides the attractive combination that moves composite materials into new era. The conventional materials like cast iron, steel, and aluminium alloy are replaced by the composite materials due to its superficial properties and could be applied in aerospace and automotive applications. Powder metallurgy fabrication technique is one of the best and attractive methods for producing metal matrix composites because of its better distribution of
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Sankar, S., K. Parvathi, and MT Ramesan. "Structural characterization, electrical properties and gas sensing applications of polypyrrole/Cu-Al2O3 hybrid nanocomposites." High Performance Polymers 32, no. 6 (2020): 719–28. http://dx.doi.org/10.1177/0954008319899157.

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The present work focused on the synthesis of polypyrrole (PPy) wrapped nano copper-alumina (Cu-Al2O3) composite by an in situ polymerization of pyrrole in the presence of Cu-Al2O3 nanoparticles. The polymerized samples were systematically characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) analysis, scanning electron microscope (SEM), high-resolution transmission electron microscope (HR-TEM), differential scanning calorimetry (DSC), and thermogravimetric analysis (TGA). The properties such as AC and DC conductivity, dielectric constant, and ammonia gas sens
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