The effect of surface treatment on the corrosion behavior of pure Ta sheet in an equimolar NaCl-KCl melt at 850℃ in air, part 2: Diamond film, TaC film, Ta-Si coating and Ta-Si-Al coating

Hu, Ke; Hu, Shubing; Zeng, Siqi; Peng, Bo; Xiong, Xuesong; Wang, Wenkai; Cheng, Guangkun

doi:10.1016/j.corsci.2019.03.049

Cited by 12 publications

(3 citation statements)

References 53 publications

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“…22 In recent years, it has been reported that due to the immiscibility of Mo and Zr with Ag, a large number of polyhedral Ag nanoparticles with regular shapes can be formed on Mo−Ag 23 and Ag−Zr 24 alloy films' surfaces, respectively, and such alloy films show good SERS performance. Since tantalum (Ta) and Ag are not mutually soluble 25 and Ta has excellent corrosion resistance and antibacterial properties, 26 we anticipate that the addition of Ta elements to Ag films can prepare SERS substrates with high sensitivity and repeatability. So, in the present work, Ta−Ag alloy films will be prepared in one step at room temperature through magnetron sputtering.…”

Section: Introductionmentioning

confidence: 99%

Microstructure Evolution of Ag/Ta Nanostructured Films for Surface-Enhanced Raman Scattering Substrates

Zhang

Shi

et al. 2023

ACS Appl. Nano Mater.

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Surface-enhanced Raman scattering (SERS), a nondestructive, ultrasensitive detection method, has a wide range of potential applications. However, its application is limited due to the weak Raman scattering signals. Therefore, it is urgent to explore a simple physical method to prepare SERS substrates with high detection limits and excellent reproducibility. In this work, Ta−Ag alloy films were prepared by magnetron sputtering at room temperature, and a large number of Ag nanoparticles were selfformed on the alloy films' surface by adjusting the deposition time, Ag content, and annealing temperature. Further research reveals that this is because the amorphous Ta in the alloy films prevents the growth of Ag grains inside Ta−Ag alloy films, resulting in the diffusion of Ag atoms to the alloy film's surface to form Ag nanoparticles. The results demonstrate that Ag nanoparticles/Ta 55.5 at % Ag alloy films used as SERS substrates have excellent reproducibility and high sensitivity to detect 5 × 10 −16 mol L −1 rhodamine 6G (R6G) solution and 5 × 10 −12 mol L −1 crystal violet (CV) solution. This method provides a simple approach to developing highperformance SERS substrates.

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Section: Introductionmentioning

confidence: 99%

Microstructure Evolution of Ag/Ta Nanostructured Films for Surface-Enhanced Raman Scattering Substrates

Zhang

Shi

et al. 2023

ACS Appl. Nano Mater.

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“…Here, we use an immersion method as a one-pot reaction to deal with the lithium metal-containing coin cell waste. In our method, the sealing-breaking as a prerequisite process is accelerated by the chloride corrosion of the stainless-steel cell case. − At the same time, water involves the gradual and controllable conversion of Li and HF to LiOH and LiF. We proposed that 0.5 M FeCl 3 aqueous solution is the optimized choice for coin cell waste management by comparing the corrosion of bare coin cell cases and half-cells in the medium of FeCl 3 , cupric chloride (CuCl 2 ), and sodium chloride (NaCl).…”

Section: Introductionmentioning

confidence: 99%

Aqueous Ferrous Chloride as a Low-Cost Corrosive to Deal with Spent Coin-Type Cells

Zeng

Ren

et al. 2021

Energy Fuels

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The growing numbers of spent coin cells, especially those containing lithium metal, have become a cumulative burden in laboratories for worldwide research groups. The waste management of spent coin cells presents serious challenges: labor-costing manual disassembly and hazardous chemicals such as active lithium metal and side products such as hydrofluoric acid (HF). Here, we provide a solution to deal with spent coin cells by immersing them in a 0.5 M ferrous chloride (FeCl3) aqueous solution. The chlorides corrode the coin cell case that avoids the disassembly, while the moisture mildly and safely converts Li and HF into stable lithium hydrate (LiOH) and lithium fluoride (LiF). These one-week-treated coin cells can then be collected and stored, waiting for EH&S pick up. Our method is facile, labor-saving, cost-saving, and easily adapted to those who encounter the coin cell waste problem.

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“…A large volume expansion (PBR > 1) is undesirable since it produces increasing compressive stresses inside the oxide with increasing PBR, resulting in cracking or even spalling of the oxide scale. It has been reported that the PBR of pure tantalum is 2.59 15 when orthorhombic β-Ta 2 O 5 , which is the steady-state thermodynamic equilibrium phase at temperatures below 900 °C, is formed on the substrate. This indicates that β-Ta 2 O 5 can consecutively form and delaminate during hightemperature exposure.…”

mentioning

confidence: 99%

Short-time high-temperature oxidation behavior of nanocrystalline Ta coating at 850 °C

Niu,

Xing,

Zhu

et al. 2024

npj Mater Degrad

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Short-time oxidation behavior of nanocrystalline Ta coating is studied at 850 °C in comparison with that of the Ta sheet. Owing to the large PBR value and insufficient expansion space, the oxide scale on Ta sheet is dramatically cracked, delaminated and pulverized, resulting in rapid deterioration. For nanocrystalline Ta coatings with columnar structures and quantitative grain boundaries, a rapid oxygen diffusion rate causes no initial Ta2O5 to form. The gap between columns provides spaces for bulk expansion, resulting in few opening cracks and delamination. Ta oxidation experiences a crystallization course from amorphous Ta oxide, leading to in situ temperature surging and thus pulverization.

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The effect of surface treatment on the corrosion behavior of pure Ta sheet in an equimolar NaCl-KCl melt at 850℃ in air, part 2: Diamond film, TaC film, Ta-Si coating and Ta-Si-Al coating

Cited by 12 publications

References 53 publications

Microstructure Evolution of Ag/Ta Nanostructured Films for Surface-Enhanced Raman Scattering Substrates

Microstructure Evolution of Ag/Ta Nanostructured Films for Surface-Enhanced Raman Scattering Substrates

Aqueous Ferrous Chloride as a Low-Cost Corrosive to Deal with Spent Coin-Type Cells

Short-time high-temperature oxidation behavior of nanocrystalline Ta coating at 850 °C

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