The Critical Temperature of Aluminum

Morel, Vincent; Bultel, Arnaud; Chéron, B. G.

doi:10.1007/s10765-009-0671-6

Cited by 66 publications

(29 citation statements)

References 39 publications

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“…[49] Also, further reported literature values for the critical density are as low as q c = 0.28 g cm À3 (À49 pct) [50] and as high as q c = 1.03 g cm À3 (+87 pct). [51] The critical density values reported by Morel et al [47] are 0.566 g cm À3 (+2.9 pct) and 0.556 g cm À3 (+1.1 pct), respectively, which is in close agreement to our value.…”

Section: H Critical Point Datasupporting

confidence: 91%

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Thermophysical Properties of Liquid Aluminum

Leitner

Schmon³

et al. 2017

Metall Mater Trans A

144

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Ohmic pulse-heating with sub-microsecond time resolution is used to obtain thermophysical properties for aluminum in the liquid phase. Measurement of current through the sample, voltage drop across the sample, surface radiation, and volume expansion allow the calculation of specific heat capacity and the temperature dependencies of electrical resistivity, enthalpy, and density of the sample at melting and in the liquid phase. Thermal conductivity and thermal diffusivity as a function of temperature are estimated from resistivity data using the Wiedemann-Franz law. Data for liquid aluminum obtained by pulse-heating are quite rare because of the low melting temperature of aluminum with 933.47 K (660.32°C), as the fast operating pyrometers used for the pulse-heating technique with rise times of about 100 ns generally might not be able to resolve the melting plateau of aluminum because they are not sensitive enough for such low temperature ranges. To overcome this obstacle, we constructed a new, fast pyrometer sensitive in this temperature region. Electromagnetic levitation, as the second experimental approach used, delivers data for surface tension (this quantity is not available by means of the pulse-heating technique) and for density of aluminum as a function of temperature. Data obtained will be extensively compared to existing literature data.

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Section: H Critical Point Datasupporting

confidence: 91%

“…Morel et al [47] estimated T c and q c with different methods. Giving a full review, they recommend a critical temperature of T c = (6.7 ± 0.8) 9 10 3 K, which is almost 50 pct higher than our estimated value.…”

Section: H Critical Point Datamentioning

confidence: 99%

Thermophysical Properties of Liquid Aluminum

Leitner

Schmon³

et al. 2017

Metall Mater Trans A

144

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“…The literature reported value for the critical temperature of aluminum is in the range of 5400-9500 K [30]. However, recent estimates of the value are in the low end of the range, for example, 6700 ± 800 K in [30], 6300 K in [31]. Therefore the value used in this work (6200 K) is in the reasonable range.…”

Section: Case B: Laser Fluence At 24 J/cmmentioning

confidence: 63%

“…19, the critical temperature is predicted to be around 5950 ± 20 K, which is close to the value (6200 K) used here for aluminum. The literature reported value for the critical temperature of aluminum is in the range of 5400-9500 K [30]. However, recent estimates of the value are in the low end of the range, for example, 6700 ± 800 K in [30], 6300 K in [31].…”

Section: Case B: Laser Fluence At 24 J/cmmentioning

confidence: 98%

Multi-scale modeling of phase explosion in high fluence nanosecond laser ablation and clarification of ablation depth prediction criterion

Cao

Shin

2015

Applied Surface Science

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a b s t r a c tWhen phase explosion occurs, accurate prediction of the ablation behavior in the high energy nanosecond laser ablation process still remains a difficult challenge. In this paper, nanosecond laser ablation of aluminum and copper with phase explosion is investigated through a multi-scale model and experimental verification. The melt ejection behavior during phase explosion is successfully predicted by combined molecular dynamics (MD) and smoothed particle hydrodynamics (SPH) simulations and validated against the experiments. The commonly adopted 0.9T c (critical temperature) criterion for phase explosion boundary is also assessed with the prediction of the ablation depth for both aluminum and copper, and it is found that the 0.9T c criterion does not always work. The multi-scale model developed in this work is shown to have better capability in predicting the ablation behavior when phase explosion is involved.

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“…56 Hess 1998 [13] 8944 472. 6 [20] 5700 187 320 Lomonosov 2007 [21] 6250 197 703 Gordeev et al 2008 [22] 7917 467 660 Morel et al 2009 [23] 6700800 N/A N/A Faussurier et al 2009 [24] 7963 350 440 Belashchenk et al 2011 [25] 7050 325 ± 20 675 ± 34 Karabutov et al 2012 [26] 7963 350 -Mishra and Chaturvedi 2012 [27] 8387 445 385…”

Section: Introductionmentioning

confidence: 99%