Crystallization kinetics of Al86Ni8Gd6 amorphous alloy

Kulikova, T. V.; Быков, В. А.; Belozerova, A. A.; Мурзакаев, А. М.; Ryltsev, R. E.

doi:10.1016/j.jnoncrysol.2013.06.019

Cited by 7 publications

(3 citation statements)

References 36 publications

(40 reference statements)

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“…1. High-temperature X-ray studies showed that crystallization of the Al 86 Ni 8 Ho 6 amorphous ribbon in the temperature range of 443-723 K proceeded in three stages: an increase in size of the aluminum crystallites in the amorphous phase was observed up to 463 K; the Ho 3 Ni 5 Al 19 phase began to form above 563 K; and then the HoAl 3 phase appeared at 598 K, which, as well as Ho 3 Ni 5 Al 19 , was retained up to 723 K. Such multistage processes are typical of systems based on Al-REM-TM [21][22][23].…”

Section: Resultsmentioning

confidence: 92%

Crystallization kinetics of Al86Ni8Ho6 amorphous alloy

Kulikova

Быков

Belozerova

et al. 2016

J. Synch. Investig.

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Abstract⎯We investigate the processes of crystallization and determined the structure and thermal properties of Al 86 Ni 8 Ho 6 amorphous alloy in a wide temperature range. A three-stage nature of the crystallization process upon heating to a temperature of 700 K is found. According to data of high-temperature X-ray diffraction analysis, the crystallization of an Al 86 Ni 8 Ho 6 amorphous ribbon is rather complex: aluminum crystallites grow in the amorphous phase to a temperature of 470 K, a Ho 3 Ni 5 Al 19 phase is formed above 563 K, and a HoAl 3 phase appears above 598 K. The phases of Ho 3 Ni 5 Al 19 and HoAl 3 are retained up to a temperature of 723 K. A three-stage kinetic model of the crystallization process with the reaction sequence is proposed based on calculations by multivariate nonlinear regression. The values of the total activation energy for each crystallization stage reach 239, 378, and 247 kJ/mol.

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Section: Resultsmentioning

confidence: 92%

Crystallization kinetics of Al86Ni8Ho6 amorphous alloy

Kulikova

Быков

Belozerova

et al. 2016

J. Synch. Investig.

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“…Kulikova et al studied the crystallization process and determined the structure and thermal properties of the Al86Ni8Ho6 amorphous alloy in a wide temperature range. It found the three-stage nature of the crystallization process when heated to 700 K. According to the high temperature X-ray diffraction analysis data, the three-stage kinetic model of the crystallization process has a reaction sequence based on the calculation of multiple nonlinear regressions [10]. In Rajaei et al's research, Ni-Mo and Ni-Mo-P alloy coatings were electrodeposited on AISI304 stainless steel samples as metal bipolar plates to improve the corrosion resistance, hydrophobicity, and conductivity of the samples.…”

Section: Introductionmentioning

confidence: 99%

Construction and Research of Amorphous Alloys and Ferroelectric Materials in the Digital Logistics Platform

Chen

Wang

2022

Journal of Nanomaterials

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People have higher and higher requirements for the size, sensitivity, measurement range, repeatability error, and power consumption cost of sensors and memories in the field of electronic information technology. “Logistics” as another new industry in the modern social division of labor is showing its infinite vitality, and the rise of digital logistics is the use of network technology to meet the development of this era. Based on the application of amorphous alloys and ferroelectric materials to the construction of logistics digital platform, this paper is aimed at demonstrating the function of nonstatic alloys and ferroelectric materials to promote the data storage of logistics digital platform and other aspects from multiple perspectives. This article is mainly divided into two general directions. The first is to study the physical and chemical properties of amorphous alloys and ferroelectric materials separately. The content of the article is more complete by referring to relevant research literature or obtaining relevant targeted information; the basic structure of the digital logistics platform is modeled, and the application of amorphous alloys and ferroelectric materials is mainly applied to the two parts of the data service composition and the data layer. This arrangement is based on the sensor as the key to data processing. Location is of great significance to the entire platform system. The experimental results show that the digital logistics platform constructed in this paper can reach a score of 7.75 in terms of data security and 7.39 in terms of flexibility. It also increases the efficiency of the entire operation process.

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“…Al-rare earth-transition metal (Al-RE-TM) amorphous alloys known as marginal glass formers that show limited glass-forming ability are particularly of interest. Quite a lot of research regarding glass-forming ability, thermal stability, and crystallization has been reported [17][18][19][20][21][22][23][24]. However, there have been few reports regarding systematic study pinpointing to the effect of transition metals on the Al-RE-TM amorphous alloys.…”

Section: Introductionmentioning

confidence: 99%

Crystallization, mechanical and electrochemical behavior of Al-Ce-TM (TM = Fe, Co, Ni and Cu) amorphous alloys

2019

IJNN

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Al86Ce10TM4 amorphous alloys (TM=Fe, Co, Ni and Cu) were fabricated using melt-spin fast-quenching method. The crystallization, mechanical and electrochemical behavior of the as-spun and the post-annealed alloys were investigated by X-ray diffraction (XRD), differential scanning calorimetry (DSC), micro-indentation and electrochemical techniques. It was found the completely amorphous Al86Ce10TM4 alloys (TM=Fe, Co, Ni and Cu) go through two crystallization processes, where the first exothermal peak represents nucleation of nano-crystalline particles and the second exothermal peak signifies growth of the nano-crystalline precipitates. Both the nucleation and growth processes rely on diffusion-controlled mechanism. The first onset crystallization temperature Tx1 associated with activation energy E1 and frequency factor Ko1 can be used to evaluate the thermal stability of the amorphous alloys while the second onset crystallization temperature Tx2 associated with activation energy E2 and frequency factor Ko2 can be taken to judge the thermal stability of ideal amorphous-nanocrystalline mixed structure in sustaining optimized mechanical and electrochemical properties. The as-spun and post-annealed alloys exhibit higher mechanical hardness (860~1180 MPa), corrosion resistance (10-8A/cm2 ) and high temperature endurance (284, 300 and 420°C for Al86Ce10Co4 , Al86Ce10Ni4 andAl86Ce10Fe4 , respectively) compared to hardness 500~600 MPa, corrosion resistance 10-7A/cm2 and high temperature durability 200°C of traditional Al crystalline alloys, manifesting the value on scientific studies and engineering applications of the Al86Ce10TM4 amorphous alloys.

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Crystallization kinetics of Al86Ni8Gd6 amorphous alloy

Cited by 7 publications

References 36 publications

Crystallization kinetics of Al86Ni8Ho6 amorphous alloy

Crystallization kinetics of Al86Ni8Ho6 amorphous alloy

Construction and Research of Amorphous Alloys and Ferroelectric Materials in the Digital Logistics Platform

Crystallization, mechanical and electrochemical behavior of Al-Ce-TM (TM = Fe, Co, Ni and Cu) amorphous alloys

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