Effect of Small Additions of Alumina Nanoparticles on the Strength Characteristics of an Aluminum Material

Миронов, В. А.; Агуреев, Л. Е.; Eremeeva, Zh. V.; Костиков, В. И.

doi:10.1134/s001250161808002x

Cited by 13 publications

(5 citation statements)

References 2 publications

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“…The formed layer between the particle and the matrix has higher strength properties than the matrix, which positively affects the strength of the entire material. This effect has been demonstrated on many materials [3,[19][20][21].…”

Section: Discussionmentioning

confidence: 90%

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Influence of Alumina Nanofibers Sintered by the Spark Plasma Method on Nickel Mechanical Properties

Агуреев

Костиков

Eremeeva

et al. 2021

Metals

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The article presents the study of alumina nanoparticles’ (nanofibers) concentration effect on the strength properties of pure nickel. The samples were obtained by spark plasma sintering of previously mechanically activated metal powders. The dependence of the grain size and the relative density of compacts on the number of nanofibers was investigated. It was found that with an increase in the concentration of nanofibers, the average size of the matrix particles decreased. The effects of the nanoparticle concentration (0.01–0.1 wt.%) on the elastic modulus and tensile strength were determined for materials at 25 °C, 400 °C, and 750 °C. It was shown that with an increase in the concentration of nanofibers, a 10–40% increase in the elastic modulus and ultimate tensile strength occurred. A comparison of the mechanical properties of nickel in a wide range of temperatures, obtained in this work with materials made by various technologies, is carried out. A description of nanofibers’ mechanisms of influence on the structure and mechanical properties of nickel is given. The possible impact of impurity phases on the properties of nickel is estimated. The tendency of changes in the mechanical properties of nickel, depending on the concentration of nanofibers, is shown.

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Section: Discussionmentioning

confidence: 90%

“…It should be noted that the addition of refractory insoluble high-modulus nanoparticles into the metal matrix in small quantities (up to 0.1 wt.%) contributes to their more straightforward and more uniform distribution [19,20]. This is because nanoparticles are prone to aggregation.…”

Section: Introductionmentioning

confidence: 99%

Influence of Alumina Nanofibers Sintered by the Spark Plasma Method on Nickel Mechanical Properties

Агуреев

Костиков

Eremeeva

et al. 2021

Metals

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“…The effect of small additions of nanoparticles on mechanical properties has not yet been fully explained. In a number of previous works, it has been found that in the case of a soft matrix, for example, aluminum [ 29 , 30 ], small additions of high-modulus insoluble in the matrix nanoparticles provide not only an increase in strength, but also in elastic modulus. Moreover, for a number of cases, such dependencies of properties on the concentration of additives of nanoparticles have an extreme character.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Study of Composite Materials of the NiAl-Cr-Mo-Nanoparticles (ZrO2, MgAl2O4) System

Агуреев¹,

Костиков

Савушкина

et al. 2022

Materials

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Materials based on the NiAl-Cr-Mo system with zirconium oxide or aluminum-magnesium spinel nanoparticle small additions were obtained by spark plasma sintering. Thermodynamic modeling was carried out to predict the phase formation in the NiAl-Cr-Mo system and its change depending on temperature, considering the presence of a small amount of carbon in the system. The phase composition and microstructure of materials were studied. NiAl (B2) and CrMo phases were found in the sintered samples. Bending strength measurements at different temperatures shows that nanoparticles of insoluble additives lead to an increase in bending strength, especially at high temperatures. A fractographic analysis of the sample’s fractures shows their hybrid nature and intercrystalline fracture, which is confirmed by the clearly visible matrix grains similar to cleavage. The maximum strength at 700 °C (475 MPa) was found for material with the addition of 0.1 wt.% zirconium oxide nanoparticles. In the study of internal friction, typical peaks of a nickel-aluminum alloy were found in the temperature ranges of 150–200 °C and 350–400 °C.

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“…Furthermore, the incorporation of metals and non-metals with metal oxides nanoparticles also enhances the functionality of the materials. One such metal that has been extensively studied is bismuth, and there are a series of nanocomposites (Bi 2 WO 6 , BaTiO 3 Bi 2 O 3, Bi 2 S 3 , BiVO 4 , Bi 2 Ti 2 O 7, Bi 12 TiO 20 and Bi 2 InNbO 7 ) that show a variety of properties [17][18][19][20][21]. Bismuth molybdate (Bi 2 MoO 6 ) is a versatile metal molybdate with photoelectric characteristics that has been widely used as a photocatalyst and as an anode material in lithium batteries.…”

Section: Introductionmentioning

confidence: 99%

Dielectric Studies of Bi2MoO6/Graphene Oxide and La-Doped Bi2MoO6/Graphene Oxide Nanocomposites

Adil

Latif

Waqar

et al. 2021

Metals

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The mixed metal oxides Bi2MoO6 and La-doped Bi2MoO6 were prepared by the sol–gel method. Then, varying quantities of the as-prepared mixed metal oxides were blended with graphene oxide (GO), employing sonication, to obtain Bi2MoO6/GO (BM/GO) and La-Bi2MoO6/GO (LBM/GO) nanocomposites. These prepared materials were characterized by different techniques such as thermal gravimetric analysis (TGA), X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), and transmission electron microscopy (TEM). Dielectric properties were studied by using a precision impedance analyzer. Dielectric constant and loss tan of the synthesized composites were studied as a function of frequency by using a precision impedance analyzer. Overall, the dielectric constant (ɛ’) observed for the LBM/GO composites was higher than that of BM/GO.

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Effect of Small Additions of Alumina Nanoparticles on the Strength Characteristics of an Aluminum Material

Cited by 13 publications

References 2 publications

Influence of Alumina Nanofibers Sintered by the Spark Plasma Method on Nickel Mechanical Properties

Influence of Alumina Nanofibers Sintered by the Spark Plasma Method on Nickel Mechanical Properties

Preparation and Study of Composite Materials of the NiAl-Cr-Mo-Nanoparticles (ZrO2, MgAl2O4) System

Dielectric Studies of Bi2MoO6/Graphene Oxide and La-Doped Bi2MoO6/Graphene Oxide Nanocomposites

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