Structure and Physicomechanical Properties of the Fe3Al Intermetallic Compound Obtained by Impact Hot Compaction

Тоlochyn, О. І.; Baglyuk, G. А.; Tolochyna, O.V.; Evych, Ya. І.; Podrezov, Yu. N.; Molchanovska, H. M.

doi:10.1007/s11003-021-00456-y

Cited by 15 publications

(6 citation statements)

References 15 publications

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“…Of course, the main role in the properties of a nanomaterial is played by the type of system, which can be single-component [74][75] or multicomponent [76][77][78][79]. No less important is the technology of preparation [80][81][82][83][84][85] and processing of the material before its use, which confirms the theoretical [90][91][92] and experimental [93][94][95][96][97][98][99][100] data.…”

Section: Introductionsupporting

confidence: 61%

Crystalline potassium dihydrogen phosphate (KDP) powders

Zolotarenko,

Matysina

et al. 2023

Poverhn.

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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.

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Section: Introductionsupporting

confidence: 61%

Crystalline potassium dihydrogen phosphate (KDP) powders

Zolotarenko,

Matysina

et al. 2023

Poverhn.

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“…The type of systems of such materials (single-component [73][74] or multicomponent [75][76][77][78] systems) plays an important role, as does the preparation [79][80][81][82][83][84] and processing [85][86][87][88] of metals, what is confirmed by experimental [89][90][91][92][93][94][95][96] and theoretical data [97][98][99].…”

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.

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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.).

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“…Our study is focused on Fe 2 CoAl belonging to a very promising class of materials based on Fe and Al [19][20][21][22][23][24][25][26]. Earlier experimental studies [27][28][29][30][31][32][33][34][35][36][37] are currently complemented by research efforts related to applications in high-temperature coatings [38][39][40][41][42][43][44] and composites [45][46][47][48][49], new preparation techniques [50][51][52][53] and their material properties [54,55]. Theoretical studies of iron aluminides include ab initio calculations of single-phase materials [56][57][58][59][60][61][62][63][64][65] and nanocomposites [66,…”

Section: Introductionmentioning

confidence: 99%

A Quantum-Mechanical Study of Antiphase Boundaries in Ferromagnetic B2-Phase Fe2CoAl Alloy

et al. 2021

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In this study, we performed a quantum mechanical examination of thermodynamic, structural, elastic, and magnetic properties of single-phase ferromagnetic Fe2CoAl with a chemically disordered B2-type lattice with and without antiphase boundaries (APBs) with (001) crystallographic orientation. Fe2CoAl was modeled using two different 54-atom supercells with atoms on the two B2 sublattices distributed according to the special quasi-random structure (SQS) concept. Both computational models exhibited very similar formation energies (−0.243 and −0.244 eV/atom), B2 structure lattice parameters (2.849 and 2.850 Å), magnetic moments (1.266 and 1.274 μB/atom), practically identical single-crystal elastic constants (C11 = 245 GPa, C12 = 141 GPa, and similar C44 = 132 GPa) and auxetic properties (the lowest Poisson ratio close to −0.1). The averaged APB interface energies were observed to be 199 and 310 mJ/m2 for the two models. The studied APBs increased the total magnetic moment by 6 and 8% due to a volumetric increase as well as local changes in the coordination of Fe atoms (their magnetic moments are reduced for increasing number of Al neighbors but increased by the presence of Co). The APBs also enhanced the auxetic properties.

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Structure and Physicomechanical Properties of the Fe3Al Intermetallic Compound Obtained by Impact Hot Compaction

Cited by 15 publications

References 15 publications

Crystalline potassium dihydrogen phosphate (KDP) powders

Crystalline potassium dihydrogen phosphate (KDP) powders

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

A Quantum-Mechanical Study of Antiphase Boundaries in Ferromagnetic B2-Phase Fe2CoAl Alloy

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