The spreading kinetics and precursor film characteristics of Zr-based alloy melt on W substrate

Li, Z.K.; Ma, Guoqiang; Fu, Huameng; Sha, Pengfeng; Zhang, B.; Zhu, Zheng; Wang, A.M.; Li, H.; Zhang, H.W.; Zhang, H.F.; Hu, Zheng

doi:10.1016/j.matlet.2013.02.005

Cited by 15 publications

(4 citation statements)

References 26 publications

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“…Given the advantage on interface study, sessile drop method262728 was introduced to research the effect of elements addition. The differential scanning calorimetry (DSC) results of V, VNb5 and VTa5 alloys indicates that the liquidus temperatures are 990 ± 5 K. Therefore, the alloys were heated to 1273 K on W substrates and held for 30 min.…”

Section: Resultsmentioning

confidence: 99%

Atomic interaction mechanism for designing the interface of W/Zr-based bulk metallic glass composites

Sha

et al. 2015

Sci Rep

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The interaction between active element Zr and W damages the W fibers and the interface and decreases the mechanical properties, especially the tensile strength of the W fibers reinforced Zr-based bulk metallic glass composites (BMGCs). From the viewpoint of atomic interaction, the W-Zr interaction can be restrained by adding minor elements that have stronger interaction with W into the alloy. The calculation about atomic interaction energy indicates that Ta and Nb preferred to segregate on the W substrate surface. Sessile drop experiment proves the prediction and corresponding in-situ coating appears at the interface. Besides, the atomic interaction mechanism was proven to be effective in many other systems by the sessile drop technique. Considering the interfacial morphology, Nb was added into the alloy to fabricate W/Zr-based BMGCs. As expected, the Nb addition effectively suppressed the W-Zr reaction and damage to W fibers. Both the compressive and tensile properties are improved obviously.

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Section: Resultsmentioning

confidence: 99%

Atomic interaction mechanism for designing the interface of W/Zr-based bulk metallic glass composites

Sha

et al. 2015

Sci Rep

Self Cite

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“…Such a congruent relationship is also suitable for the wetting of metal/ceramic systems [4]. Also, in all Al/TC4 and Al/ TA2 (except for Al 6061/TA2 at 600°C which is nonwetting at the final state), the precursor film can be found at the final state after wetting, also can be seen in Hg/ Ag system [5] in the study by Be'er et al However, the formation mechanism is so different from the evaporation-condensation mechanism (suggested by de Gennes [6]) and the surface diffusion mechanism (suggested by Li et al [7]). Further, the precursor film, in a metal/ceramic system, especially for the melt contain some concentration of the active element, is an adsorbed film.…”

Section: Reactive Wetting Of Al Alloys On Metallic Substratesmentioning

confidence: 88%

Wetting of Al Alloys for Hot Dipping Coating Process

Lin¹,

Sui²,

Yu³

2019

Wettability and Interfacial Phenomena - Implications for Material Processing

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Wetting phenomenon, as a basic physical process, also relates to the many material processes, such as coating process, brazing or soldering process, casting, preparation of MMCs, etc. In this chapter, the method of wetting characterization at the high temperatures was presented (especially for the metallurgical melts), also the wetting behavior and mechanism of Al alloys (4043 and 6061 alloys) on the different metallic substrates at isothermal dwelling process as well as the characteristics and formation mechanism of precursor film were discussed. Thermodynamics of segregation of solute element were also discussed, which can be predicted by the thermodynamic model. We believe the content of this chapter would be a guidance for hot dipping process based on the wetting theories.

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“…Molecularly thin precursor films have been discovered in many high temperature metal/metal systems. 16–19 Webb and co-workers were the first to determine the dynamic characteristics of metallic precursor films by comparing their spreading dynamics with the scaling law of R ( t ) ∼ t n . 20 The satisfaction of R ( t ) ∼ t 1/2 indicates that the precursor film moves via diffusion.…”

Section: Introductionmentioning

confidence: 99%

The formation mechanism of the precursor film in high temperature molten metal systems: insight into structural disjoining pressure

Zhao,

Shibahara,

Fan

et al. 2023

Phys. Chem. Chem. Phys.

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The spreading kinetics and precursor film characteristics of Zr-based alloy melt on W substrate

Cited by 15 publications

References 26 publications

Atomic interaction mechanism for designing the interface of W/Zr-based bulk metallic glass composites

Atomic interaction mechanism for designing the interface of W/Zr-based bulk metallic glass composites

Wetting of Al Alloys for Hot Dipping Coating Process

The formation mechanism of the precursor film in high temperature molten metal systems: insight into structural disjoining pressure

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