Mechanical characterization of sol-gel alumina-based ceramics with intragranular reinforcement of multiwalled carbon nanotubes

Rivero-Antúnez, Pedro; Cano‐Crespo, Rafael; Esquivias, L.; Rosa–Fox, N. de la; Zamora‐Ledezma, Camilo; Domínguez‐Rodríguez, Arturo; Morales‐Flórez, Víctor

doi:10.1016/j.ceramint.2020.04.285

Cited by 21 publications

(12 citation statements)

References 45 publications

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“…Also, PCA and maximum variance orthogonal rotation are utilized to observe each factor’s high loads and classification. Generally, if KMO is greater than or equal to 0.7 and the load coefficient of each item is greater than 0.5, the combination of factors between items of the same variable will be realized (Rivero-Antunez et al 2020 ).…”

Section: Analysis Of Intelligent Innovation Of Open Technologies Unde...mentioning

confidence: 99%

RETRACTED ARTICLE: The relationship between open technological innovation, intellectual property rights capabilities, network strategy, and AI technology under the Internet of Things

Liu

Yu²

2022

Oper Manag Res

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The problems faced by the open technological innovation of China’s new ICT (information and communications technology) industry under IoT (Internet of Things) technology are expected to be analyzed to improve the overall innovation ability and ensure the sustainable development of related industries. An evaluation model is constructed for open technological innovation in the IoT industry by analyzing the development of IPR (Intellectual Property Rights) management, network strategy, and AI (artificial intelligence) technology under the development of IoT technology. Meanwhile, IBM SPSS Statistics 20.0 and IBM SPSS Amos 19.0 are used to analyze the data information of 306 enterprises in the information technology industry. Besides, the proposed hypotheses are verified by factor analysis, multiple regression, and Back Propagation Neural Network. Finally, a new evaluation index system is constructed for open technological innovation in the new ICT industry. The development of IoT technology provides a primary guarantee for the open technological innovation of the new ICT industry, and the network strategy has the greatest influence on the internal knowledge output mode. Besides, the experimental results indicate that the IoT and artificial intelligence have a critical display value for the open technological innovation of the emerging ICT industry, with the highest weight ratio of 48.25%. This result demonstrates that artificial intelligence is positively correlated with the external input information. Intellectual property management is a crucial guarantee of open technology innovation in the ICT industry. The evaluation model of open technological innovation in the ICT industry has good performance through case analysis, with the highest accuracy of 91.25%. Therefore, the evaluation index system reported here can reflect the important factors affecting the development of innovative technology, which can provide a theoretical basis and practical value for improving the existing open technology innovation system.

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Section: Analysis Of Intelligent Innovation Of Open Technologies Unde...mentioning

confidence: 99%

RETRACTED ARTICLE: The relationship between open technological innovation, intellectual property rights capabilities, network strategy, and AI technology under the Internet of Things

Liu

Yu²

2022

Oper Manag Res

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“…The Raman features from PVA nor PVDF are not observed, which is consistent with the literature, because in graphitic materials, the Raman process is resonant and so its signal is much more intense than the nonresonant signal from PVA and PVDF. [31,33,34] These findings clearly indicate that the structure of the FLG flakes is conserved in the final nanocomposite. [35][36][37] 3.2.…”

Section: Raman Spectroscopymentioning

confidence: 82%

Fabrication and Characterization of Metal‐Free Composite Electrodes Based on Few‐Layer‐Graphene Nanoplatelets for Oxygen Reduction Reaction Applications

Suppan

Briones-Macías

Pazmiño-Arias

et al. 2021

Physica Status Solidi (b)

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Innovative technologies such as fuel and solar cells, supercapacitors, batteries, sensors, electrochemical energy storage devices are some of the most studied solutions to future energy demands due to an exponential population increase, estimated to reach over nine billion by 2050. [1] In fuel cells, chemical energy is directly converted to electricity. This fact is the main driving force through high-performance electrodes with improved catalytic activities toward hydrogen oxidation reaction (HOR) or oxygen reduction reaction (ORR). The final performance of a microbial fuel cell (MFC) will depend on the following parameters: 1) the power at the output, 2) the current density, and 3) the Coulombic efficiency, [1,2] which in turn depend on several factors such as the conductivity and porosity of the anode, the type of proton exchange membrane used to separate the cell chambers, the type of organic substrate used in the oxidation reaction at the anode, as well as the ORR at the cathode. However, the cathodic ORR in many cases has proven to be a limiting factor in the total energy generation in the cells, hence considered as one of the greatest performance indicators of a microbial fuel cell. [2] The commercial Pt/C catalyst is the common reference because of its great performance towards ORR with a limiting current density around 6 mA cm À2 at 0.7 V versus RHE (reversible hydrogen electrode) and 1600 rpm. Catalysts such as phosphorus doped hierarchical porous carbon showed a shift of around 70 mV for the onset potential compared with the Pt/C electrode. [3] Carbon fiber paper with Pt 3 Co showing a limiting current density of 25.8 mA cm À2 at 0.2 V versus RHE and 2500 rpm [4] and nanocomposites based on hybrid Mn 3 O 4 and oxidized graphene flakes provide a limiting current density of 2.8 mA cm À2 at À0.6 V and 1600 rpm. [5,6] Despite being the material with the highest electrocatalytic activity for ORR reported so far, Pt presents certain disadvantages like its high cost, toxicity, chemical instability, and biofouling, which still limit a widespread application. [7,8] These are the principal driving forces to find affordable materials to compete with Pt for ORR. Other metals such as copper, cobalt, or iron have been also reported as good candidates to replace the expensive Pt electrodes. Those materials exhibited currents, durability, and tolerance comparable with Pt, however, their ecological impact is highly

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“…Previously, the influence of multilayer carbon nanotubes [10][11][12][13][14][15] and surfactants [16][17][18][19][20][21][22][23] on the operational and drying properties of brick loams has already been studied, and positive results of such a modification have been obtained. The goal of further improving the operational characteristics of ceramics, in particular, increasing its strength properties, was decided by the choice of modifiers from the composition of nanosized ones.…”

Section: Methodsmentioning

confidence: 99%

The use of nanosized additives in the modification of brick loam

2021

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The effect of nanosized additives on the strength properties of ceramics based on fusible brick loam of the Klyuchischenskoye deposit has been studied. In general, all nanosized additives selected for the study had a positive effect on the strength properties of ceramics. The greatest increase in strength, when using nanosized silica ash Laksil 30, was 70 %, in relation to the control sample. When using silica ash, an increase in the content of the amorphous phase in the shard after firing is noted against the background of a decrease in its porosity, which causes an increase in strength characteristics. The nature of the destruction of the samples also differed. The destruction of the control sample was accompanied by the formation and gradual opening of cracks. The destruction of the modified samples was more fragile in comparison with the control. Thus, the effectiveness of nanosized additives on the strength properties of ceramics is shown.

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Mechanical characterization of sol-gel alumina-based ceramics with intragranular reinforcement of multiwalled carbon nanotubes

Cited by 21 publications

References 45 publications

RETRACTED ARTICLE: The relationship between open technological innovation, intellectual property rights capabilities, network strategy, and AI technology under the Internet of Things

RETRACTED ARTICLE: The relationship between open technological innovation, intellectual property rights capabilities, network strategy, and AI technology under the Internet of Things

Fabrication and Characterization of Metal‐Free Composite Electrodes Based on Few‐Layer‐Graphene Nanoplatelets for Oxygen Reduction Reaction Applications

The use of nanosized additives in the modification of brick loam

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