Microstructure and mechanical properties of carbon fibers strengthened Ni-based coatings by laser cladding: The effect of carbon fiber contents

Shi, Chuan; Lei, Jianbo; Zhou, Shengfeng; Dai, Xiaoqin; Zhang, Lai-Chang

doi:10.1016/j.jallcom.2018.02.063

Cited by 53 publications

(17 citation statements)

References 49 publications

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“…Techniques with the potential of industrial application such as "green" electroplating technology, thermal spraying, and laser cladding introduce a nanometer's thin film on carbon fibers (CFs) surface. The subsequent incorporation of functional groups and novel sizing formulations improves the interphase and consequently, the CFRP mechanical properties [4][5][6]. Moreover, reinforcement with nanomaterials, such as CNTs growth on CFs is reported to effectively deal with the brittle fracture mechanism of the epoxy-based CFRPs similarly to aforementioned processes [3,7,8].…”

Section: Introductionmentioning

confidence: 97%

Applying Machine Learning to Nanoindentation Data of (Nano-) Enhanced Composites

Koumoulos

Konstantopoulos

Charitidis

2019

Fibers

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Carbon fiber reinforced polymers (CFRPs) are continuously gaining attention in aerospace and space applications, and especially their multi-scale reinforcement with nanoadditives. Carbon nanotubes (CNTs), graphene, carbon nanofibers (CNFs), and their functionalized forms are often incorporated into interactive systems to engage specific changes in the environment of application to a smart response. Structural integrity of these nanoscale reinforced composites is assessed with advanced characterization techniques, with the most prominent being nanoindentation testing. Nanoindentation is a well-established technique, which enables quantitative mapping of nanomechanical properties with the µm surficial and nm indentation resolution scale and high precision characterization. This feature enables the characterization of the interface in a statistical and quantitative manner and the correlation of (nano-) reinforcement to interface properties of CFRPs. Identification of reinforcement is performed with k-Nearest Neighbors and Support Vector Machine classification algorithms. Expertise is necessary to describe the physical problem and create representative training/testing datasets. Development of open source Machine Learning algorithms can have an influential impact on uniformity of nanometry data creation and management. The statistical character of nanoindentation is a key factor to supply information on heterogeneity of multiscale reinforced composites. Both the identification of (nano-) reinforcement and quality assessment of composites are provided by involving artificial intelligence.

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Section: Introductionmentioning

confidence: 97%

Applying Machine Learning to Nanoindentation Data of (Nano-) Enhanced Composites

Koumoulos

Konstantopoulos

Charitidis

2019

Fibers

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“…The authors of [11] demonstrated an innovative approach for controlling the surface topography and tribological behavior of biomedical alloys, such as Ti6Al4V, by means of electron beam surface treatment. Other researchers [12,13] have successfully demonstrated the possibilities for enhancing the wear and corrosion properties of steel by the formation of carbon fiber-reinforced Ni-based composite coatings via laser cladding. Laser beam technologies have a large number of applications in the field of modern medicine and are extensively discussed in [10].Other methods for coating deposition are plasma spray technologies, physical vapor deposition (PVD), etc.…”

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confidence: 99%

Influence of Electron Beam Treatment of Co–Cr Alloy on the Growing Mechanism, Surface Topography, and Mechanical Properties of Deposited TiN/TiO2 Coatings

et al. 2019

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This study examines the effect of electron beam treatment (EBT) of Co-Cr substrate on the film growth mechanism, mechanical properties, and surface topography of TiN/TiO 2 coatings deposited by reactive magnetron sputtering. The obtained results and processes that occurred during the deposition are discussed in the context of crystallographic principles, and special attention is paid to the crystallographic orientation and growth mechanism studied by X-ray diffraction (XRD). The mechanical properties were investigated by means of nanoindentation and wear tests. The surface topography was evaluated using atomic force microscopy (AFM). The results obtained in the present study showed that polycrystalline TiN and anatase TiO 2 phases were present in all cases. Electron beam treatment of Co-Cr substrate tended to form a reorientation of the microvolumes from (111) to (200) of TiN, leading to a change in the growth mechanism from three-dimensional (Volmer-Weber) to layer-by-layer (Frank-van der Merwe). It was found that the electron beam treatment process did not significantly affect the thickness of the coatings and the deposition rate. The treatment process led to an increase in surface roughness. The higher surface roughness after the EBT process should be appropriate to support cell growth and adhesion on the surface of the deposited bilayer coating. It was demonstrated that EBT of the substrate caused a decrease in hardness of the deposited coatings from 10 to 5 GPa. The observed decrease in hardness was attributed to the change in the preferred crystallographic orientation and film growth mechanism. The hardness of the bilayer coating after the application of EBT of the Co-Cr substrate was much closer to that of human bones, which means that severe stress shielding effect could not be expected. The evaluated coefficient of friction (COF) exhibited significantly lower values in the case of EBT of the substrate compared to the untreated Co-Cr material.resistance, which depends mostly on the surface properties and can be overcome by appropriate surface modification technologies [4].During the last decades, considerable attention has been paid to surface manufacturing of materials by high-energy fluxes (HEFs) (i.e., electron and laser beams). In these technologies, the electrons or photon fluxes interact with the surface of the sample, heat the treated area, and form a thermal distribution. The rate of heating and cooling can be characterized by quite high values (about 10 5 -10 6 K/s), which lead to some structural changes in the functional properties [5][6][7][8][9][10]. The authors of [11] demonstrated an innovative approach for controlling the surface topography and tribological behavior of biomedical alloys, such as Ti6Al4V, by means of electron beam surface treatment. Other researchers [12,13] have successfully demonstrated the possibilities for enhancing the wear and corrosion properties of steel by the formation of carbon fiber-reinforced Ni-based composite coatings via laser cladding. Laser beam technologie...

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“…Carbon fiber has high strength, high modulus, and low expansion properties, which is a common reinforcement in composites . Carbon fiber can significantly improve the tensile strength, corrosion, and wear resistance of Ni‐based composite coatings, according to previous studies . In addition, there is no solid solubility between the C‐element and many other elements.…”

Section: Introductionmentioning

confidence: 98%

Effect of carbon fiber on microstructure evolution and surface properties of FeCoCrNiCu high‐entropy alloy coatings

Zhao

Liu

Huang

et al. 2019

Materials & Corrosion

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FeCoCrNiCu and Cf/FeCoCrNiCu high‐entropy alloy coatings are prepared by laser cladding to study the effects of carbon fiber on the microstructure and surface properties of the FeCoCrNiCu alloy. It is found that the addition of carbon fiber has little effect on the phase structure of the FeCoCrNiCu alloy coating. However, an interesting finding is that the addition of carbon fiber could decrease the segregation of Cu‐element along the grain boundaries in the FeCoCrNiCu coating. In addition, the addition of carbon fiber can significantly improve the corrosion resistance of the FeCoCrNiCu alloy coating. It can also reduce the intergranular corrosion in the coating. Moreover, the addition of carbon fiber has positive effects on the improvement in the hardness and wear resistance of the high‐entropy alloys (HEAs) coatings. The decreased segregation of Cu‐element along the grain boundaries is mainly attributed to the significant improvement in surface properties of the HEA coatings.

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Microstructure and mechanical properties of carbon fibers strengthened Ni-based coatings by laser cladding: The effect of carbon fiber contents

Cited by 53 publications

References 49 publications

Applying Machine Learning to Nanoindentation Data of (Nano-) Enhanced Composites

Applying Machine Learning to Nanoindentation Data of (Nano-) Enhanced Composites

Influence of Electron Beam Treatment of Co–Cr Alloy on the Growing Mechanism, Surface Topography, and Mechanical Properties of Deposited TiN/TiO2 Coatings

Effect of carbon fiber on microstructure evolution and surface properties of FeCoCrNiCu high‐entropy alloy coatings

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