A quantitative method to characterize the Al 4 C 3 -formed interfacial reaction: The case study of MWCNT/Al composites

Yan, Laipeng; Tan, Zhanqiu; Ji, Gang; Li, Zhi Qiang; Fan, Genlian; Schryvers, D.; Shan, Aidang; Zhang, Di

doi:10.1016/j.matchar.2015.12.031

Cited by 65 publications

(12 citation statements)

References 30 publications

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“…Aluminum can also react with the carbon nanotubes during the production of Al/CNT composites, even under protective atmospheres 7,22 . This reaction is concentrated at CNT surface defects and forms aluminum carbide (Al 4 C 3 ).…”

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confidence: 99%

Production of TiO2 Coated Multiwall Carbon Nanotubes by the Sol-Gel Technique

2017

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In recent years, efforts in developing high strength-low density materials are increasing significantly. One of the promising materials to attend this demand is the carbon nanotube (CNT), to be used mainly as a reinforcing phase in lightweight metal matrix composites (MMC). In the present work, the sol-gel technique has been employed to obtain TiO 2 coating on the surface of commercial multiwall carbon nanotubes (MWCNT). The aim of such coating is to improve the thermal stability of MWCNT in oxidize environment, which is necessary in most of MMC processing routes. Calcination in inert atmosphere was performed in order to crystallize a stable coating phase. The hybrid CNT/TiO 2 nanocomposite was characterized by X-Ray Diffractometry (XRD), Raman spectroscopy, Thermogravimetry (TGA) and Field Emission Gun -Scanning Electron Microscopy (FEG-SEM). The coating structure was observed to change from anatase to rutile, as the calcination temperature increases from 500 to 1000ºC. Results from thermogravimetric analysis showed that the samples calcined at 1000 ºC were more resistant to oxidation at high temperatures.

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confidence: 99%

Production of TiO2 Coated Multiwall Carbon Nanotubes by the Sol-Gel Technique

2017

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“…Interestingly, these factors are not released readily and do not activate ILC2s in virus-infected healthy individuals, but effectively augment type 2 responses in chronically inflamed airways (Figure 4) . 121,122 In addition, respiratory viral infections may also exacerbate chronic airway inflammatory diseases, including allergic inflammation through other non-type 2 mechanisms, in which other markers can also be used as an indicator of these exacerbations. Viral infections can lead to the destruction of epithelial barrier and disruption of mucociliary function due in part to cell death in the virus infected epithelium.…”

Section: Biomarkers Of Viral Infections In Exacerbation Of Allergic Rmentioning

confidence: 99%

Biomarkers in the Diagnosis and Therapy of Allergic Diseases and Asthma

Breiteneder¹,

Peng²,

Agache³

et al. 2020

Preprint

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Modern healthcare requires a proactive and individualized response to diseases, combining precision diagnosis and personalized treatment. Accordingly, the approach to patients with allergic diseases encompasses novel developments in the area of personalized medicine, disease phenotyping and endotyping and the development and application of reliable biomarkers. A detailed clinical history and physical examination followed by the detection of IgE immunoreactivity against specific allergens still represents the state of the art. However, nowadays, further emphasis focuses on the optimization of diagnostic and therapeutic standards and a large number of studies have been investigating the biomarkers of allergic diseases, including asthma, atopic dermatitis, allergic rhinitis, food allergy, urticaria and anaphylaxis. Various biomarkers have been developed by omics technologies, some of which lead to a better classification of the distinct phenotypes or endotypes. The introduction of biologicals to clinical practice increases the need for biomarkers for patient selection, prediction of outcomes and monitoring, to allow for an adequate choice of the duration of these costly and long-lasting therapies. Escalating healthcare costs together with questions on the efficacy of the current management of allergic diseases requires further development of a biomarker-driven approach. Here, we review biomarkers in diagnosis and treatment of asthma, atopic dermatitis, allergic rhinitis, viral infections, chronic rhinosinusitis, food allergy, drug hypersensitivity and allergen-immunotherapy with a special emphasis on specific IgE, microbiome and epithelial barrier. In addition, EAACI guidelines on biologicals are discussed within the perspective of biomarkers.

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“…In addition, the inducement of MWCNTs not only reinforced the weldment but also contributes in the cosmic properties of the matrix, by acting as a link across the crack and sacrificing itself fractured in a pull-out mode. It is also reported that the chemical reaction of aluminum with MWCNTs is thermodynamically supportive for manufacturing processes [26]. In previous studies, metal matrix composite (MMC) of Al-MWCNTs conventionally synthesizes through ball milling for uniform dispersion and utilizes spark plasma sintering, plasma spraying, extrusion and hot pressing as post-sintering processes [27,28].…”

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confidence: 99%

Modified utilization of semi-sectioned tubes as filler coated with MWCNTs–TiO2 in TIG arc welding to recover fusion lost mechanical properties of the weldment

Muzamil

Samiuddin

2018

J Braz. Soc. Mech. Sci. Eng.

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The loss of mechanical properties in heat treatable aluminum alloys categories during arc fusion welding processes is a critical issue, which limits the direct application in contrast to different post-treatments methods. This work involved a strategy for the novel and distinctive formation of fillers using 3-mm-diameter (AA6061) tubes having MWCNTs and TiO 2 nanoparticles coating on the inner surface. A series of experiments were conducted using TIG welding to evaluate the effect of welding current and composition of inside coating (MWCNTs-TiO 2) contents on welding strength. Three gradually increasing current values (160 A, 180 A and 200 A) were selected and tested against three combinations of nanocomposite coatings that include 1 wt% MWCNTs-TiO 2 , 1.5 wt% MWCNTs-TiO 2 and 2 wt% MWCNTs-TiO 2. Acceptable qualified bonding between nanocomposite and inside surface is utmost important before conducting the experiments, Tape Test (ASTM-D3359-09 e2) was performed for the assessment of bonding conditions and led to qualitatively exceptional bonding conditions after applying vacuum heating cycle. Tensile test results have demonstrated a significant improvement of 34.20-45.65% strength using innovative nanocomposite coated semi-sectioned tube in comparison to tube fillers without coating. Meanwhile, a beneficial gradually forming W-shape microhardness profile in contrast to conventional U and V shape profiles was achieved at 1.5 and 2 wt% of MWCNTs, and the uplift of hardness in the WZ region up to 86.51% subjected to increase high MWCNTs contents in combination with the current. Therefore, it is concluded to be a virtuous strategy for reinforcing mechanism of weldments to encounter some fusion property loss in aluminum alloys.

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A quantitative method to characterize the Al 4 C 3 -formed interfacial reaction: The case study of MWCNT/Al composites

Cited by 65 publications

References 30 publications

Production of TiO2 Coated Multiwall Carbon Nanotubes by the Sol-Gel Technique

Production of TiO2 Coated Multiwall Carbon Nanotubes by the Sol-Gel Technique

Biomarkers in the Diagnosis and Therapy of Allergic Diseases and Asthma

Modified utilization of semi-sectioned tubes as filler coated with MWCNTs–TiO2 in TIG arc welding to recover fusion lost mechanical properties of the weldment

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