The Al-In (Aluminum-Indium) system

Murray, J. L.

doi:10.1007/bf02868666

Cited by 44 publications

(16 citation statements)

References 11 publications

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“…One immediately notices that the before observed melting peaks are missing. This clearly suggests a complete solution of the available 0.025 at% tin and indium at 620 ° C, as predicted by the phase diagrams in the literature . However, both thermograms show a small exothermic peak (A, B), which could be attributed to the precipitation of In and Sn (see TEM results in Section 3).…”

Section: Resultssupporting

confidence: 78%

“…One can clearly see the signature of the 4d‐electrons of pure Indium (momentum range of

15 - 30 \times 10^{- 3} m_{0} c

) indicating that the quenched‐in vacancies are localized as nearest neighbors to the indium atoms. The samples have been quenched form 620 °C to ensure the maximum solubility of indium in aluminium …”

Section: Resultsmentioning

confidence: 99%

“…This clearly suggests a complete solution of the available 0.025 at% tin and indium at 620 C, as predicted by the phase diagrams in the literature. [24,25] However, both thermograms show a small exothermic peak (A, B), which could be attributed to the precipitation of In and Sn (see TEM results in Section 3). It is noteworthy that the precipitation of In occurs at a slightly higher temperature than that of Sn.…”

Section: Differential Scanning Calorimetrymentioning

confidence: 99%

“…The strange contrast observed is due to the sample preparation in the focussed ion beam (FIB)most probably caused by redeposition of material in the FIB-System. This additional contrast appears in some TEM-images, which can be distinguished from structural contrast by changing the [27] In 0.19 0.045 [24] Sn 0.11 0.026 [25] Sb 0.09 0.020 [28] Pb 0.19 0.026 [29] Bi 0.23 0.030 [30] The data base for Pb and Bi does allow only to estimate an upper limit. [26] imaging conditions during operating the TEM.…”

Section: Microstructurementioning

confidence: 99%

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Precipitation Behavior in High‐Purity Aluminium Alloys with Trace Elements – The Role of Quenched‐in Vacancies

Lotter¹,

Muehle

Elsayed

et al. 2018

Physica Status Solidi (a)

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The main mechanism for the strengthening of aluminium‐copper alloys of the 2xxx type is hardening by copper‐rich precipitates. However, their size, distribution, and crystal structure determine the final mechanical properties of the material. It has been shown that alloying additionally small amounts of cadmium, indium, or tin influences the precipitation behavior as well as the final strength of Al‐Cu alloys. The binding energy of quenched‐in vacancies to trace elements in the aluminium matrix is recognized as an influence on the diffusion behavior of the copper atoms and thus the preferred type of precipitate changes. A precondition for this influence is the transition of trace elements into solid solution during the solution heat treatment. In the present work, solubility and interaction with quenched‐in vacancies is analyzed for the elements In, Sn, Sb, Bi, and Pb in high‐purity binary alloys using differential scanning calorimetry (DSC), positron annihilation lifetime spectroscopy (PALS) as well as scanning and transmission electron microscopy (SEM, TEM). The results confirm on one hand literature data and deliver on the other hand new structural details. A subsequent anneal at moderate temperature leads to finely distributed precipitations on the nanoscale.

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Section: Resultssupporting

confidence: 78%

“…One can clearly see the signature of the 4d‐electrons of pure Indium (momentum range of

15 - 30 \times 10^{- 3} m_{0} c

Section: Resultsmentioning

confidence: 99%

Section: Differential Scanning Calorimetrymentioning

confidence: 99%

Section: Microstructurementioning

confidence: 99%

See 2 more Smart Citations

Precipitation Behavior in High‐Purity Aluminium Alloys with Trace Elements – The Role of Quenched‐in Vacancies

Lotter¹,

Muehle

Elsayed

et al. 2018

Physica Status Solidi (a)

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“…All the excess indium content of the alloy over the solid solubility will be segregated in the intergranular regions that finally solidify by the eutectic Figure 1. Al-In (a) and Al-Zn (b) binary phase diagrams [34,35] reaction, resulting in an intergranular eutectic microstructure. It should be remembered that the maximum solid solubility of indium in aluminum is very low (approx.…”

Section: Microstructure Of Aluminum Anodesmentioning

confidence: 99%

The role of indium in the activation of aluminum alloy galvanic anodes

Pourgharibshahi

Lambert

2015

Materials & Corrosion

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Despite six decades use of aluminum as a galvanic (sacrificial) anode, there remains a need for a better understanding of the underlying mechanisms for enhancing its efficient performance in cathodic protection systems. A few mechanisms have been proposed for the role of indium in the activation of Al‐Zn‐In anodes and there appears to be no general agreement on whether this element plays its depassivating role by modifying the bulk microstructure of the anode, chemical composition of its surrounding electrolyte or directly through doping the structure of the passive oxide film. These mechanisms have been critically reviewed to achieve a more comprehensive understanding of the role of indium in such applications. Moreover, the novel solidification processing called controlled diffusion solidification (CDS) has been introduced as an efficient way to surmount the poor castability of the anode alloy without any need for the addition of elements with detrimental effects on the electrochemical properties of the anode.

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Al-In

Binary Systems. Part 1 _ Elements and Binary Systems From Ag-Al to Au-Tl

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The Al-In (Aluminum-Indium) system

Cited by 44 publications

References 11 publications

Precipitation Behavior in High‐Purity Aluminium Alloys with Trace Elements – The Role of Quenched‐in Vacancies

Precipitation Behavior in High‐Purity Aluminium Alloys with Trace Elements – The Role of Quenched‐in Vacancies

The role of indium in the activation of aluminum alloy galvanic anodes

Al-In

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