Mechanochemical synthesis of nanocrystalline aluminium boride (AlB12)

Adil, Shaik; Karati, Anirudha; Murty, B.S.

doi:10.1016/j.ceramint.2018.07.302

Cited by 9 publications

(3 citation statements)

References 29 publications

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“…At present, researches on mechanochemistry mainly focused on crystal materials. For example, Adil, Karati, and Murty () had successfully synthesized nanocrystalline AlB 12 powder from the stoichiometric Al + B powders by mechanochemical synthesis at low temperature. However, starch is a kind of polycrystalline material, and there are few researches on the mechanochemical effect about it.…”

Section: Introductionmentioning

confidence: 99%

Effects of high hydrostatic pressure on structures, properties of starch, and quality of cationic starch

Zhang

Hou

et al. 2019

Cereal Chem

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Background and objectives The chemical activity of starch granules is inert. The purpose of this study was to reveal the mechanism of producing high‐quality modified starch by advanced equipment. Findings There were pores and central cavities with loose structure in mung bean starch granules, so water could enter the starch granules through the pores under high hydrostatic pressure treatment. The starch molecules could be hydrated, and starch granules could even be gelatinized. The reaction efficiency (RE) of cationic starch increased to 32.20% and the other qualities (solubility, swelling degree, and viscosities) were significantly improved after 100 MPa treatment. The RE and other qualities of cationic starch changed differently after 200 and 400–600 MPa treatments. Conclusions High hydrostatic pressure could produce significant mechanochemical effect on starch granules, so the structures and properties of mung bean starch were changed markedly, and the quality of cationic starch was improved. Significance and novelty The mechanism of producing high‐quality modified starch by advanced equipment was revealed using mechanochemical theory, which could lay a theoretical foundation for the manufacture of high‐performance modified starch industrial equipment in the future.

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Section: Introductionmentioning

confidence: 99%

Effects of high hydrostatic pressure on structures, properties of starch, and quality of cationic starch

Zhang

Hou

et al. 2019

Cereal Chem

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“…Higher borides belong to the group of compounds based on B 12 icosahedrons. The main compounds based on B 12 icosahedrons are AlB 12 , B 12 C 3 (B 4 C), B 12 Si 3 , B 12 Si 2 (B 4 Si and B 6 Si), and B 12 O 2 (B 6 O) [ 3 , 4 , 5 , 6 , 7 , 8 ]. These compounds exhibit excellent properties at relatively low densities, have extremely high melting points due to the strong bonds of intra- and interclusters B 12 [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Phase Composition, Structure and Properties of the Spark Plasma Sintered Ceramics Obtained from the Al12Mg17-B-Si Powder Mixtures

Nikitin¹,

Zhukov²,

Matveev³

et al. 2022

Nanomaterials

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In this work, composite materials were obtained by spark plasma sintering of an Al12Mg17-B-Si powder mixture. The structure, phase composition, and mechanical properties of the obtained composites were studied. It was found that various compounds based on B12 icosahedrons, such as AlB12, B4Si, and B6Si, are formed during spark plasma sintering. Based on the SEM images and results of XRD analysis of the obtained specimens, a probable scheme for the formation of the phase composition of composite materials during spark plasma sintering was proposed. An increase in the Al12Mg17-B powder content in the initial mixture from 30 to 70 wt% leads to an increase in hardness from 16.55 to 21.24 GPa and a decrease in the friction coefficient and wear rate from 0.56 to 0.32 and 13.60 to 5.60 10−5 mm−3/(N/m), respectively.

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“…A lot of unique alloying materials such as nanocrystalline, quasicrystalline, amorphous and supersaturated solid solutions alloys can be synthesized with this method [6]. In the literature, it is obvious that metal borides studies with MA method have exponentially increased in recent years due to its simple and favorable features [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Characterization of Mn2B Nanoparticles by Mechanochemical Method

Şimşek¹,

Şimşek²,

Özcan³

2019

Journal of Boron

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In this study, elemental Mn and B initial materials were used to synthesize pure Mn 2 B nanocrystals by ball milling. Milling experiments were conducted with highenergy planetary ball mill in a hardened steel vial with hardened steel balls, under Ar atmosphere at 40:1 ball-to-powder ratio and 300 rpm rotating speed. As synthesized Mn 2 B nanocrystals phase structures and morphological/microstructural investigation were analyzed by X-Ray diffractometry (XRD) and scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM/EDX), respectively. Particle size of Mn 2 B were calculated as 34.5 nm by Rietveld refinement. Furthermore, the magnetic behavior of nanocrystals were determined by vibrating sample magnetometer (VSM). Mn 2 B sample shows ferromagnetic behavior at room temperature with saturation magnetization of 13 emu/g and coercivity of 90 Oe.

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Mechanochemical synthesis of nanocrystalline aluminium boride (AlB12)

Cited by 9 publications

References 29 publications

Effects of high hydrostatic pressure on structures, properties of starch, and quality of cationic starch

Effects of high hydrostatic pressure on structures, properties of starch, and quality of cationic starch

Phase Composition, Structure and Properties of the Spark Plasma Sintered Ceramics Obtained from the Al12Mg17-B-Si Powder Mixtures

Fabrication and Characterization of Mn2B Nanoparticles by Mechanochemical Method

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