Thermo-kinetic analysis of Ni–Al intermetallic phase formation in powder system

Maiti, Sanat Chandra; Ghoroi, Chinmay

doi:10.1007/s10973-015-5171-2

Cited by 15 publications

(5 citation statements)

References 60 publications

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“…The DTA/DSC based methods are the most widely used for gasless SHS systems, with multiple studies into intermetallics, specifically the Ni/Al [35][36][37][38][39][40][41][42][43], Ti/Al [44][45][46], Co/Al [47], Al/Ru [48], Nb/Al [49], and Mg/Al [50] systems, in addition to other binary solid-solid compositions, i.e., the Si/C [51], Mo/Si [52], Zr/B [53], Fe/Se [54]. More complicated ternary systems were also investigated [54][55][56][57][58][59][60][61].…”

Section: Differential Thermal Analysis/differential Scanning Calorimetrymentioning

confidence: 99%

“…Without the lubricant, the reaction proceeded in a single step with activation energy of 470 kJ/mol, this difference was attributed to the oxide layer between the reactants [42]. Maiti and Ghoroi studied the Ni/Al system using the Friedman, Ozawa, and Kissinger approach, yielding activation energies of 437.0, 448.4, and 457.6 kJ/mol, respectively [43].…”

Section: The Ni/al System As a Model For Shs Kineticsmentioning

confidence: 99%

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Kinetics of Heterogeneous Self-Propagating High-Temperature Reactions

Shuck¹,

Mukasyan²

2018

Advanced Chemical Kinetics

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In this chapter, we present an overview of experimental techniques utilized and kinetic data collected for exothermic self-sustained noncatalytic heterogeneous reactions. The data focuses on five primary experimental techniques: electrothermal explosion, differential thermal analysis, electrothermography, combustion velocity/temperature analyses, and several advanced in situ diagnostics, including time-resolved X-ray diffraction.

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Section: Differential Thermal Analysis/differential Scanning Calorimetrymentioning

confidence: 99%

Section: The Ni/al System As a Model For Shs Kineticsmentioning

confidence: 99%

Kinetics of Heterogeneous Self-Propagating High-Temperature Reactions

Shuck¹,

Mukasyan²

2018

Advanced Chemical Kinetics

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“…The enthalpy of formation of Al-Ni systems is related to the composition of atoms of each element, and the Ni : Al ratio of 1 : 1 shows the largest enthalpy owing to the difference in binding energy. [15][16][17][18] Figure 6 shows the XRD analysis results of the reacted Al=Ni multilayer powdered materials after 20 and 40 passes. In X-ray profiles of the materials after 20 passes, the peaks of Ni 2 3 , Al 0.9 Ni 1.1 , AlNi 3 , and Al 0.42 Ni 0.58 are identified.…”

Section: Dominant Factors For Temperature Behaviorsmentioning

confidence: 99%

“…[15][16][17] Namely, the energy of exothermic heat depends on the composition of the formed Al=Ni intermetallic compounds, and the maximum enthalpy occurs at an Al : Ni atomic ratio of 1 : 1. [15][16][17][18] Al=Ni multilayer thin films prepared by physical vapor deposition using magnetronsputtering equipment are strictly stacked on a substrate alternately. By controlling the sputtering condition, alternating multilayers are formed with nanometer-scale thickness resolution.…”

Section: Introductionmentioning

confidence: 99%

Temperature behavior of exothermic reaction of Al/Ni multilayer powder materials based on cold-rolling and pulverizing method

Kametani

Izumi

Miyake

et al. 2017

Jpn. J. Appl. Phys.

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In this paper, the characteristics of self-propagating exothermic reactions of an Al/Ni multilayer powder materials fabricated by a cold-rolling and powdering procedure are reported as initial findings of the first trial on a heat source for various applications with the energy-saving feature. Experimental results showed that, following the reaction of the developed Al/Ni multilayer powder materials in air atmosphere, the maximum temperature increased from approximately 1450 °C to over 1768 °C with increasing number of passes from 20 to 40 in cold-rolling. Furthermore, observations by scanning electron microscopy and crystallographic identification by X-ray diffraction measurements showed that the multilayer structure of powdered Al/Ni after 40 passes of cold-rolling was deformed, became thinner with below sub-micrometer thickness, and almost completely reacted to NiAl intermetallic compounds. It is possible that optimizing cold-rolling conditions enables us to control exothermic heat, which will be useful for heat sources.

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“…[15][16][17][18][19][20] The energy of exothermic heat during the reaction depends on the composition of the formed Al=Ni intermetallic compounds, and it is known that the maximum enthalpy is manifested at an atomic ratio of Al : Ni ¼ 1 : 1. [17][18][19][20][21] This exothermic reaction has many technical advantages such as easy ignition, flash heating, very fast exothermic reaction propagation, instant and local heating, no emission gases, and relatively inexpensive materials. [22][23][24] In order to promote the use of Al=Ni exothermic materials as a simple heat source, high mass productivity and mountability on the aimed point of joining are required.…”

Section: Introductionmentioning

confidence: 99%

New local joining technique for metal materials using exothermic heat of Al/Ni multilayer powder

Izumi

Kametani

Miyake

et al. 2018

Jpn. J. Appl. Phys.

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The use of Al/Ni multilayer powders as a new heat source has been expected for metal joining technique owing to their instantaneous reaction and enormous amount of exothermic heat. In this study, the effects of the amount of Al/Ni multilayer powders on the electrical and mechanical properties of the joining part of Al strip specimens were examined. These electrical and mechanical properties were estimated by electric resistivity measurement using the four-terminal method and shear test, respectively. Experimental results show that Al specimens are successful joined under a limited condition and exhibit low electrical resistance and sufficiently high strength to maintain the joined state. However, overheating increases the amount of Al/Ni multilayer powder in the joined part, which causes considerable damage such as voids and dissolved loss. It is found that optimization of the amount of Al/Ni multilayer powder enables us to realize reliable joining of Al foils in electronics fields in the future.

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Thermo-kinetic analysis of Ni–Al intermetallic phase formation in powder system

Cited by 15 publications

References 60 publications

Kinetics of Heterogeneous Self-Propagating High-Temperature Reactions

Kinetics of Heterogeneous Self-Propagating High-Temperature Reactions

Temperature behavior of exothermic reaction of Al/Ni multilayer powder materials based on cold-rolling and pulverizing method

New local joining technique for metal materials using exothermic heat of Al/Ni multilayer powder

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