The dissolution characteristics and wire electrochemical micromachining of metallic glass Ni82Cr7Si5Fe3B3

Hang, Yusen; Zeng, Yongbin; Yang, Tao; Meng, Lingzhi

doi:10.1016/j.jmapro.2020.08.069

Cited by 9 publications

(2 citation statements)

References 22 publications

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“…Afterwards, they further carried out the experimentation studies on micromachining amorphous alloys using the micro-rod/wire-shaped tool electrodes. In the past decade, Zeng and Meng et al [ 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 ] have carried out a series of studies on fabricating amorphous alloy microstructures by using electrochemical wire cutting and successfully achieved several complex precision microstructures such as microgear and micro-cantilever arrays [ 32 , 39 ]. However, electrochemical wire cutting can only be used to fabricate perforated microstructures such as slits and holes and externally complex-shaped structures by following a designed trajectory, and it is difficult to machine blind holes, grooves and cavities, and three-dimensional complex structures and parts.…”

Section: Introductionmentioning

confidence: 99%

Microfabricating Mirror-like Surface Precision Micro-Sized Amorphous Alloy Structures Using Jet-ECM Process

Han,

Ming,

Niu

et al. 2024

Micromachines

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Amorphous alloy (AA) is a high-performance metal material generally with significantly excellent mechanical and corrosion resistance properties and thus is considered as a desirable material selection for micro-scale articles. However, the microfabrication of AA still faces a variety of technical challenges mainly because the materials are too hard to process and easily lose their original properties, although at moderately high temperatures. In this study, jet-electrolyte electrochemical machining (Jet-ECM) was proposed to microfabricate the Zr-based AA because it is a low-temperature material-removal process based on the anode dissolution mechanism. The electrochemical dissolution characteristics and material removal mechanism of AA were investigated, and then the optimal process parameters were achieved based on the evaluation of the surface morphologies, surface roughness, geometrical profile, and machining accuracy of the machined micro-dimples. Finally, the feasibility was further studied by using Jet-ECM to fabricate arrayed micro-dimples using the optimized parameters. It was found that Jet-ECM can successfully microfabricate mirror-like surface AA arrayed precision micro-dimples with significantly high dimensional accuracy and geometrical consistency. Jet-ECM is a promisingly advantageous microfabrication process for the hard-to-machine AA.

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Section: Introductionmentioning

confidence: 99%

Microfabricating Mirror-like Surface Precision Micro-Sized Amorphous Alloy Structures Using Jet-ECM Process

Han,

Ming,

Niu

et al. 2024

Micromachines

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show abstract

“…Additionally, electrochemical machining of Zr-Based MGs using organic solvent electrolytes results in low material removal rates, limiting fabrication to shallow microstructures. In the past decade, Zeng et al [25][26][27] proposed the utilization of WECMM technology to manufacture high-precision and -quality microstructures in metallic glasses using water-based electrolytes. However, wire electrochemical micromachining faces difficulties in machining blind holes, grooves, and cavities, as well as three-dimensional complex structures and parts.…”

Section: Introductionmentioning

confidence: 99%

Fabricating Precise and Smooth Microgroove Structures on Zr-Based Metallic Glass Using Jet-ECM

Li,

Ming,

Niu

et al. 2024

Micromachines

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Zr-based metallic glasses (MGs) are promising materials for mold manufacturing due to their unique mechanical and chemical properties. However, the high hardness of metallic glasses and their tendency to crystallize at high temperatures make it challenging to fabricate precise and smooth microscale structures on metallic glasses. This limitation hampers the development of metallic glasses as molds. Jet electrochemical machining (jet-ECM) is a non-contact subtractive manufacturing technology that utilizes a high-speed electrolyte to partially remove material from workpieces, making it highly suitable for processing difficult-to-machine materials. Nevertheless, few studies have explored microgroove structures on Zr-based MGs using sodium nitrate electrolytes by jet-ECM. Therefore, this paper advocates the utilization of the jet-ECM technique to fabricate precise and smooth microgroove structures using a sodium nitrate electrolyte. The electrochemical characteristics were studied in sodium nitrate solution. Then, the effects of the applied voltages and nozzle travel rates on machining performance were investigated. Finally, micro-helical and micro-S structures with high geometric dimensional consistency and low surface roughness were successfully fabricated, with widths and depths measuring 433.7 ± 2.4 µm and 101.4 ± 1.6 µm, respectively. Their surface roughness was determined to be 0.118 ± 0.002 µm. Compared to non-aqueous-based methods for jet-ECM of Zr-based MGs, the depth of the microgrooves was increased from 20 μm to 101 μm. Furthermore, the processed microstructures had no uneven edges in the peripheral areas and no visible flow marks on the bottom.

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The microstructure formation of thick Zr-based amorphous alloy with anode vibration in HClO4 solution by WECMM

Hang

Zeng

Yang

et al. 2021

Int J Adv Manuf Technol

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The dissolution characteristics and wire electrochemical micromachining of metallic glass Ni82Cr7Si5Fe3B3

Cited by 9 publications

References 22 publications

Microfabricating Mirror-like Surface Precision Micro-Sized Amorphous Alloy Structures Using Jet-ECM Process

Microfabricating Mirror-like Surface Precision Micro-Sized Amorphous Alloy Structures Using Jet-ECM Process

Fabricating Precise and Smooth Microgroove Structures on Zr-Based Metallic Glass Using Jet-ECM

The microstructure formation of thick Zr-based amorphous alloy with anode vibration in HClO4 solution by WECMM

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