Structural and mechanical properties of Al―Mg―B films: Experimental study and first-principles calculations

Иващенко, В. И.; Scrynskyy, P.L.; Дуб, С. Н.; Butenko, O. O.; Kozak, A.O.; Sinelnichenko, O. K.

doi:10.1016/j.tsf.2015.12.059

Cited by 11 publications

(6 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…AlMgB 14 -based materials are prepared by sintering, self-propagating high-temperature synthesis (SHS), hot pressing, and spark plasma sintering [ 10 , 11 , 12 ]. AlMgB 14 -based coatings can be obtained using physical vapor deposition [ 13 , 14 , 15 , 16 ]. Both targets consist of pre-synthesized powder materials [ 13 ] and stoichiometric elemental powder compositions [ 14 ], or separate elemental targets [ 15 , 16 ] can be used to obtain AlMgB 14 -based coatings.…”

Section: Introductionmentioning

confidence: 99%

“…AlMgB 14 -based coatings can be obtained using physical vapor deposition [ 13 , 14 , 15 , 16 ]. Both targets consist of pre-synthesized powder materials [ 13 ] and stoichiometric elemental powder compositions [ 14 ], or separate elemental targets [ 15 , 16 ] can be used to obtain AlMgB 14 -based coatings. For example, in [ 15 ], the DC magnetron sputtering method was used to obtain coatings using three Al-, Mg-, and B-based targets.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Structure and Frictional Properties of Ultrahard AlMgB14 Thin Coatings

et al. 2023

View full text Add to dashboard Cite

This paper presents the results of studies on AlMgB14-based ceramic coatings deposited on WC-Co hard alloy substrates using RF plasma sputtering. The aim of this work is to study the structure, phase composition, and mechanical properties of AlMgB14-based coatings depending on the sputtering mode. According to the results of the microstructural study, the bias voltage applied to the substrate during the sputtering process significantly contributed to the formation of the coating morphology. Based on the results of compositional and structural studies by energy dispersive X-ray spectroscopy, X-ray diffraction, and Raman spectroscopy, it was found that the coatings are composed of nanocrystalline B12 icosahedrons distributed in an amorphous matrix consisting of Al, Mg, B, and O elements. The nanohardness of the coatings varied from 24 GPa to 37 GPa. The maximum value of the hardness together with the lowest coefficient of friction (COF) equal to 0.12 and wear resistance of 7.5 × 10−5 mm3/N·m were obtained for the coating sputtered at a bias voltage of 100 V. Compared with the COF of the original hard alloy substrate, which is equal to 0.31, it can be concluded that the AlMgB14-based coatings could reduce the COF of WC-based hard alloys by more than two times. The hardness and tribological properties of the coatings obtained in this study are in good agreement with the properties of AlMgB14-based materials obtained by other methods reported in the literature.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Structure and Frictional Properties of Ultrahard AlMgB14 Thin Coatings

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Furthermore, the heat capacity and the thermal expansion of MgB 2 at 0 GPa was predicted by Saengdeejing 21 . The thermodynamic properties of Mg–B compounds and Al–Mg–B films were also investigated by using ab initio calculations and CALPHAD methods 22 , 23 . So far, the most effective method to obtain the hexagonal phase MgB 2 is the high-pressure and high-temperature growth by using different kinds of solvents, and the external pressures and higher temperature may promote the reaction of Mg–B compounds 22 .…”

Section: Introductionmentioning

confidence: 99%

Pressure effect of the mechanical, electronics and thermodynamic properties of Mg–B compounds A first-principles investigations

Zhang

Wang

et al. 2021

Sci Rep

View full text Add to dashboard Cite

First principle calculations were performed to investigate the structural, mechanical, electronic properties, and thermodynamic properties of three binary Mg–B compounds under pressure, by using the first principle method. The results implied that the structural parameters and the mechanical properties of the Mg–B compounds without pressure are well matched with the obtainable theoretically simulated values and experimental data. The obtained pressure–volume and energy–volume revealed that the three Mg–B compounds were mechanically stable, and the volume variation decreases with an increase in the boron content. The shear and volume deformation resistance indicated that the elastic constant Cij and bulk modulus B increased when the pressure increased up to 40 GPa, and that MgB7 had the strongest capacity to resist shear and volume deformation at zero pressure, which indicated the highest hardness. Meanwhile, MgB4 exhibited a ductility transformation behaviour at 30 GPa, and MgB2 and MgB7 displayed a brittle nature under all the considered pressure conditions. The anisotropy of the three Mg–B compounds under pressure were arranged as follows: MgB4 > MgB2 > MgB7. Moreover, the total density of states varied slightly and decreased with an increase in the pressure. The Debye temperature ΘD of the Mg–B compounds gradually increased with an increase in the pressure and the boron content. The temperature and pressure dependence of the heat capacity and the thermal expansion coefficient α were both obtained on the basis of Debye model under increased pressure from 0 to 40 GPa and increased temperatures. This paper brings a convenient understanding of the magnesium–boron alloys.

show abstract

“…Furthermore, the heat capacity and the thermal expansion of MgB 2 at 0 GPa was predicted via DFT calculations by Saengdeejing [22]. The thermodynamic properties of Mg-B compounds and Al-Mg-B films were also investigated by using ab initio calculations and CALPHAD methods [23][24]. Nevertheless, the structural stability of Mg-B compounds under thermodynamic conditions have not been reported as yet.…”

Section: Introductionmentioning

confidence: 99%

Pressure Effect of the Mechanical, Electronics and Thermodynamic Properties of Mg-B Compounds: A First-Principles Investigation

Zhang

Wang

et al. 2021

Preprint

View full text Add to dashboard Cite

First principle calculations were performed to investigate the structural, mechanical, electronic properties, and thermodynamic properties of three binary Mg-B compounds under pressure, by using the first principle method. The results implied that the structural parameters and the mechanical properties of the Mg-B compounds without pressure are well matched with the obtainable theoretically simulated values and experimental data. The obtained pressure–volume and energy–volume revealed that the three Mg-B compounds were mechanically stable, and the volume variation decreases with an increase in the boron content. The shear and volume deformation resistance indicated that the elastic constant C ij and bulk modulus B increased when the pressure increased up to 40 GPa, and that MgB 7 had the strongest capacity to resist shear and volume deformation at zero pressure, which indicated the highest hardness. Meanwhile, MgB 4 exhibited a ductility transformation behaviour at 30 GPa, and MgB 2 and MgB 7 displayed a brittle nature under all the considered pressure conditions. The anisotropy of the three Mg-B compounds under pressure were arranged as follows: MgB 4 > MgB 2 > MgB 7. Moreover, the total density of states (TDOS) varied slightly and decreased with an increase in the pressure. The Debye temperature Θ D of the Mg-B compounds gradually increased with an increase in the pressure and the boron content. The temperature and pressure dependence of the heat capacity and the linear thermal expansion coefficient α were both obtained on the basis of Debye model under increased pressure from 0GPa to 40 GPa and increased temperatures. This paper brings a convenient understanding of the magnesium-boron alloys.

show abstract

Structural and mechanical properties of Al―Mg―B films: Experimental study and first-principles calculations

Cited by 11 publications

References 28 publications

Structure and Frictional Properties of Ultrahard AlMgB14 Thin Coatings

Structure and Frictional Properties of Ultrahard AlMgB14 Thin Coatings

Pressure effect of the mechanical, electronics and thermodynamic properties of Mg–B compounds A first-principles investigations

Pressure Effect of the Mechanical, Electronics and Thermodynamic Properties of Mg-B Compounds: A First-Principles Investigation

Contact Info

Product

Resources

About