Orientation effect of electropolishing characteristics of 316L stainless steel fabricated by laser powder bed fusion

Han, Wei

doi:10.1007/s11465-021-0633-7

Cited by 16 publications

(2 citation statements)

References 48 publications

(62 reference statements)

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“…The biocompatible surface characteristics of ECP make it suitable for biomedical implants and dental applications [20][21][22]. Recently, ECP has been explored as a post-processing technique for additive manufactured products [23,24]. Despite its merits, the use of electrolytes in ECP, which comprise strong acids, is not exempt from recent environmental regulations.…”

Section: Literature Reviewmentioning

confidence: 99%

Lubricant-Free Thermoforming Mold Using Pulse Electrochemical Polishing

Kwak,

Kim,

Park

2023

Lubricants

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Thermoforming (TF) is a process used for fabricating products by applying heat and vacuum pressure to a plastic film or plate. Typically, TF molds require post-processing, resulting in additional costs and time consumption. Furthermore, continuous application of lubricant is necessary to prevent corrosion and facilitate mold release. Electrochemical polishing (ECP) is a technique used to achieve a polished surface on metal through an electrochemical reaction. In this research, a novel approach is proposed as a solution to the need for lubricants and manual post-processing in mold preparation, utilizing pulse electrochemical polishing (PECP). A comparative analysis is conducted on the reproducibility of products and the forces required for mold release among molds prepared using PECP, lubricated molds, and unpolished molds. To assess product reproducibility, the radii of curvature of all mold steps and grooves are determined and compared. Furthermore, peeling tests are conducted to estimate the forces required for mold release. Product surface evaluation is performed using atomic force microscopy, while lateral force microscopy is employed to measure the reductions in surface frictional force achieved by PECP.

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Section: Literature Reviewmentioning

confidence: 99%

Lubricant-Free Thermoforming Mold Using Pulse Electrochemical Polishing

Kwak,

Kim,

Park

2023

Lubricants

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“…Electropolishing is a surface treatment that polishes the sample (anode) in a concentrated electrolyte. Electropolishing involves an electrolysis reaction, surface reduction and polishing in a concentrated electric field [ 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 ]. The concentrated electric field produces the polished surface.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Oxalic Acid as the Pre-Activator for the Electropolishing of Additive Manufactured Titanium-Based Materials and Its Characterization

et al. 2022

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The use of additive manufactured (AM) titanium-based materials has increased substantially for medical implants and aerospace components. However, the inferior surface roughness of additive manufactured products affects the outward appearance and reduces performance. This study determines whether activation treatment prior to electropolishing produces a better surface. Oxalic acid (OA) is used as a pre-activator using different experimental conditions and the surface roughness is reduced by electropolishing with an electrolyte of perchloric acid and glacial acetic acid. The SEM surface morphology, mechanical properties, phase transformation and electrochemical properties are measured to determine the effect of different degrees of roughness on the surface. The results show that the surface roughness of AM titanium-based samples decreases from 8.47 µm to 1.09 µm after activation using OA as a pre-treatment for electropolishing. After electropolishing using optimal parameters, the hardness and resistance to corrosion resistance are increased.

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