The effect of high-amplitude deformation and high-frequency magnetic field exposure on the elastic/inelastic properties of ptfe-based hybrid nanocomposite filled with fe cluster-doped cnts

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Kutelia E., Darsavelidze G., Dzigrashvili T., Gventsadze D., Kurashvili I., Tsurtsumia O., ...daha çox

Bulletin of the Georgian National Academy of Sciences, vol.15, no.1, pp.38-44, 2021 (Scopus)

• Nəşrin Növü: Article / Article
• Cild: 15 Say: 1
• Nəşr tarixi: 2021
• jurnalın adı: Bulletin of the Georgian National Academy of Sciences
• Jurnalın baxıldığı indekslər: Scopus, Linguistic Bibliography, zbMATH
• Səhifə sayı: pp.38-44
• Açar sözlər: Chalcopyrite, Fe-cluster-doped CNTs, Hybrid nanocomposite, Internal friction, Magnetic field, PTFE
• Açıq Arxiv Kolleksiyası: Məqalə
• Adres: Bəli

Qısa məlumat

The influence of high-amplitude torsional deformation (ε ~ 10-1÷ 10-2) and high-frequency (2.4 GHz) magnetic field treatment on elastic/inelastic properties of PTFE-based new hybrid nanocomposites modified with a two-component filler (2.5 wt% Fe-cluster-doped CNT nanopowder + 5wt% chalcopyrite micropowder) was studied using low-frequency amplitude-independent (AIIF) and amplitude-dependent (ADIF) internal friction measurements. The behavior of elastic/inelastic properties of the new trial PTFE-based hybrid nanocomposite modified by a two-component filler (Fe-cluster-doped CNTs + chalcopyrite micro-particles) was investigated in dependence on highamplitude torsional deformation (ε ~10-1÷ 10-2) and post-deformation high-frequency (2.4 GHz) magnetic field exposure and additional thermal treatment, using AIIF and ADIF measurements. It is shown that self-healing of micro/nano-cracks nucleated in the deformed samples of the nanocomposite may be properly performed via their exposure to high-frequency magnetic field and the additional annealing at 200˚C that leads to the recovery of the values of microplastic deformation beginning critical amplitude (εc) to the values even exceeding its initial magnitude by ~38%.