Phase transformations of carbon under extreme energy action

Oreshkin, V. I.; Chaikovskii, S. A.; Labetskaya, N. A.; Ivanov, Yu. F.; Khishchenko, K. V.; Levashov, P. R.; Кускова, Н. И.; Rud, A. D.

doi:10.1134/s106378421202017x

Cited by 18 publications

(4 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…First, this is the creation of strong magnetic fields by using imploding metal shells [49]- [52] and exploding single-turn solenoids [34], [53]. Second, this is the use of heavy metal liners imploding in Z-pinch geometries to achieve extreme states of matter with pressures of 1-100 Mbars [50], [54], [55]. Third, this is the electromagnetic acceleration of bodies [56], in particular, the acceleration of metal plates in experiments on studying shock waves [57]- [60].…”

Section: Introductionmentioning

confidence: 99%

Wire Explosion in Vacuum

Oreshkin

Baksht

2020

IEEE Trans. Plasma Sci.

View full text Add to dashboard Cite

This article presents a review of experimental and theoretical studies devoted to the processes that occur during explosions of wires in vacuum when the current densities in the wire are of the order of 10 8 A/cm 2 and the current density rise rates are no less than 10 15 A/(cm 2 • s). The theoretical background is focused on the transformation of the wire metal into ionized plasma. In particular, the basic physical notions used to describe wire explosions (WEs; state diagram, current action integral, and metal conductivity changes in phase transitions) are given; magnetohydrodynamic equations are described which are used to simulate WEs, and the simulation predictions are discussed together with their reliability. Extensive experimental data on WEs in vacuum are presented which made it possible to describe the corona and core formation and the development of electrothermal instabilities in the core. The data on the energy deposited in a wire exploding in vacuum reported by different authors are compared. In conclusion, problems are discussed that require additional experimental investigations, namely, the role of metastable states in a WE and the mechanism by which the core is shunted.

show abstract

Section: Introductionmentioning

confidence: 99%

Wire Explosion in Vacuum

Oreshkin

Baksht

2020

IEEE Trans. Plasma Sci.

View full text Add to dashboard Cite

show abstract

“…KDP nanocrystals and carbon nanostructures (fullerenes [1-4], fullerites [5], endofullerins [6], graphenes [7][8], nanotubes [9][10]) with various synthesis methods [11][12][13][14][15][16][17][18][19] can be used as fillers for creating new composites [20][21][22][23] suitable for 3D printing technology [24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Crystalline potassium dihydrogen phosphate (KDP) powders

Zolotarenko,

Matysina

et al. 2023

Poverhn.

View full text Add to dashboard Cite

The article discusses the use of KDP ferroelectric crystals (phosphates and arsenates of potassium, rubidium, cesium) and their deuterated analogues in various industries, including the creation of electro-optical devices and as hydrogen sorbents. The paper describes the physical properties of KDP crystals, changes in their properties near the phase transition temperature, as well as methods for obtaining KDP nanocrystals and their application in biomedicine. The paper also states that the phase transition in KDP crystals occurs near room temperature and manifests itself in a change in their physical properties, such as dielectric constant, optical properties, and heat capacity. In addition, approaching the phase transition temperature causes a change in the crystal lattice parameters, which can lead to the appearance of anomalous effects. The structure of the unit cell of potassium dihydrogen phosphate (KH2PO4) is considered. The plots of the temperature dependence of the order parameter of spontaneous polarization and the plots of the temperature dependence of the configurational heat capacity of the crystal in the phase transition region are calculated, and the plots of the temperature of the inverse and direct dielectric susceptibility are calculated. Graphs of the order parameter, which characterizes the degree of spontaneous polarization for different temperatures, depending on the strength of the external electric field, are also calculated.

show abstract

“…Each method for the synthesis of carbon nanomaterials (CNM) has its own characteristics and makes it possible to obtain various types of nanoproducts. However, today only three methods of synthesis (plasma-chemical synthesis method in a gaseous medium or in a liquid medium, as well as a pyrolytic synthesis method) [1][2][3][4][5][6][7][8][9] are the most productive and make it possible to reliably obtain nanoproducts of a certain type CNM (fullerenes [10][11][12][13], fullerites [14], endofullerenes [15], graphenes [16][17], carbon nanotubes [18][19], carbon nanofibers, etc. ).…”

Section: Introductionmentioning

confidence: 99%

Creation of 3D-products using carbon nanostructures and 3D-printing technologies (FDM, CJP, SLA, SLS)

Zolotarenko,

Rudakova

et al. 2023

Poverhn.

View full text Add to dashboard Cite

The article discusses methods for obtaining carbon nanostructures (CNS), as well as their use to create three-dimensional (3D) products using FDM, CJP, SLA, SLS technologies. The process of manufacturing consumables for 3D printing technologies (FDM, CJP, SLA, SLS) for creating new composite 3D products based on carbon nanostructures is described. The paper contains a detailed description of which methods of CNS synthesis are more productive and how they allow you to guarantee the production of one or another type of CNS. The paper analyzes the existing 3D printing technologies using CNS, developed a scheme for the full cycle of creating a 3D product containing CNS, taking into account various methods for the synthesis of CNS with the transformation of graphite or other carbon-containing material. It also describes the process of creating composite coils for FDM 3D printing from nanocomposite filaments (rigid polymer-CNS) based on a rigid polymer, which have undergone the process of preparation in a special mixer. The process of preparing consumables and printing a 3D volumetric product using FDM, CJP, SLA, SLS technologies using CNS is described. An overview of consumables for 3D products of FDM technology is presented. The analysis of composite 3D products (ceramic-CNS, rigid polymer-CNS) obtained by FDM and CJP technology was carried out. The paper also describes the three most productive methods for the synthesis of CNS: plasma-chemical synthesis in gas or liquid and pyrolytic method. These synthesis methods make it possible to guarantee the production of a certain type of CNS and have a high quality of the obtained nanoproducts. Various types of CNS are described, including soluble (fullerenes and fullerene-like structures) and insoluble nanostructures (graphenes, carbon nanotubes, carbon nanofibers, nanocomposites, etc.).

show abstract

Phase transformations of carbon under extreme energy action

Cited by 18 publications

References 11 publications

Wire Explosion in Vacuum

Wire Explosion in Vacuum

Crystalline potassium dihydrogen phosphate (KDP) powders

Creation of 3D-products using carbon nanostructures and 3D-printing technologies (FDM, CJP, SLA, SLS)

Contact Info

Product

Resources

About