Manufacturing process of short carbon fiber reinforced Al matrix with preformless and their properties

Choi, Yongbum; Meng, Xuan; Xu, Zhefeng

doi:10.1038/s41598-021-02915-7

Cited by 7 publications

(4 citation statements)

References 11 publications

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“…This indicates that carbon fibers can improve the flowability of the ceramic slurry, reducing the occurrence of voids and defects during the photocuring process. Consequently, this leads to a more uniform distribution of Al elements during the curing process [39]. A uniform distribution of Al elements can reduce stress concentration, enhancing the mechanical properties of Al 2 O 3 parts.…”

Section: Effect On Microstructurementioning

confidence: 99%

Vat Photopolymerization of Ceramic Parts: Effects of Carbon Fiber Additives on Microstructure and Mechanical Performance

Wang,

Wu,

Guo

et al. 2024

Materials

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Vat photopolymerization (VPP), as an additive manufacturing (AM) technology, can conveniently produce ceramic parts with high resolution and excellent surface quality. However, due to the inherent brittleness and low toughness of ceramic materials, manufacturing defect-free ceramic parts remains a challenge. Many researchers have attempted to use carbon fibers as additives to enhance the performance of ceramic parts, but these methods are mostly applied in processes like fused deposition modeling and hot pressing. To date, no one has applied them to VPP-based AM technology. This is mainly because the black carbon fibers reduce laser penetration, making it difficult to cure the ceramic slurry and thus challenging to produce qualified ceramic parts. To address this issue, our study has strictly controlled the amount of carbon fibers by incorporating trace amounts of carbon fiber powder into the original ceramic slurry with the aim to investigate the impact of these additions on the performance of ceramic parts. In this study, ceramic slurries with three different carbon fiber contents (0 wt.%, 0.1 wt.%, 0.2 wt.%, and 0.3 wt.%) were used for additive manufacturing. A detailed comparative analysis of the microstructure, physical properties, and mechanical performance of the parts was conducted. The experimental results indicate that the 3D-printed alumina parts with added carbon fibers show varying degrees of improvement in multiple performance parameters. Notably, the samples prepared with 0.2 wt.% carbon fiber content exhibited the most significant performance enhancements.

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Section: Effect On Microstructurementioning

confidence: 99%

Vat Photopolymerization of Ceramic Parts: Effects of Carbon Fiber Additives on Microstructure and Mechanical Performance

Wang,

Wu,

Guo

et al. 2024

Materials

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“…Metal matrix composites are increasingly used as construction materials due to their special mechanical properties [1][2][3]. Cast aluminium alloy-based composites [4][5][6] reinforced with ceramic material in the form of long fibres [7,8], short fibres [9,10] and particles [11,12] account for a significant share of this application. In addition to the many advantages conditioning their use, they are characterised by certain disadvantages, which primarily include the difficulty of joining structural elements using welding methods [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Characterisation of a New Generation of AlMgZr and AlMgSc Filler Materials for Welding Metal–Ceramic Composites

Wysocki,

Staude,

Trytek

et al. 2024

Applied Sciences

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When manufacturing the welded joints of components made of metal–ceramic composites of the Al-Si/SiC type, we encounter significant difficulties. This is related to the presence of a ceramic phase in the aluminium alloy matrix. The interaction between the molten metal matrix and the ceramic particles in the weld pool influences a complex of physicochemical phenomena resulting in, among other things, the structure of the welded joint. This is particularly true of the effect of the distribution of ceramic particles and their influence on the crystallisation process in the weld pool. An important issue is the influence of the reinforcing particles on the susceptibility of the aluminium matrix to both hot and cold cracking. The scope of the research included the development of the chemical composition of an additive material for the TIG welding of aluminium–ceramic composites. This material was made in the form of so-called sticks, cast from alloys containing elements such as magnesium, scandium or zirconium in addition to aluminium. The appropriate composition of the mass content of the individual components was intended to change the crystallisation mode of the weld pool and to obtain strengthening precipitates. The most favourable structure was obtained in the case of a modification of the AlMg5 alloy by the addition of scandium. Minor dispersions of Al3Sc became the nucleation pads of fine grains, which improved the mechanical properties of the alloy. Also, in the case of the addition of zirconium, the crystallisation shifted from dendritic to fine-grain growth. In this paper, the basic strength properties of the developed materials were tested and the most favourable chemical compositions of the filling materials were selected.

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“…Carbon fibers have huge advantages as reinforcement in composites due to high strength and thermal conductivity, low density, and negative thermal expansion coefficient. 1,2 Carbon fibers reinforced metal matrix composites combine the advantages of CFs and metals exhibit more comprehensive performance and application advantages. 3–5 The interface between CFs and metals matrix has a vital function with transferring loads and delivering energies.…”

Section: Introductionmentioning

confidence: 99%

Effect of carbon fibers crystallinity on the formation and growth of TiC coating in molten salt

Zhou

et al. 2022

Journal of Reinforced Plastics and Composites

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To improve the application of molten salt method in carbon fibers (CFs) surface modification, the work explores the effect of the CFs-itself crystallinity on the formation and growth mechanism of TiC coating in the molten salt reaction. Three different types of CFs were used to prepare TiC coatings at 850°C, and the formation and growth mechanisms were studied. The results showed that CFs surface defects could preferentially initiate nucleation and cause inhomogeneity of TiC particles in the initial stage of TiC coating formation. The CFs surface with high crystallinity could obtain a finer and more uniform TiC coating because the growth rate of TiC particles is slower and the particles do not accumulate with each other during the coating growth. At the same time, the growth rate of TiC coating decreased with increasing CFs crystallinity during the TiC coating growth, which reason is that CFs with higher crystallinity require more activation energies of carbon atom counter diffusion. Therefore, the surface of CFs with higher crystallinity and fewer surface defects is easier to obtain a uniform and particle size TiC coating during the molten salt reaction.

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Manufacturing process of short carbon fiber reinforced Al matrix with preformless and their properties

Cited by 7 publications

References 11 publications

Vat Photopolymerization of Ceramic Parts: Effects of Carbon Fiber Additives on Microstructure and Mechanical Performance

Vat Photopolymerization of Ceramic Parts: Effects of Carbon Fiber Additives on Microstructure and Mechanical Performance

Characterisation of a New Generation of AlMgZr and AlMgSc Filler Materials for Welding Metal–Ceramic Composites

Effect of carbon fibers crystallinity on the formation and growth of TiC coating in molten salt

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