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The Electrochemical Machining (ECM) method is one of the most widely used processing methods in metal surface processing, due to its unique advantages. However, the electrolyte in ECM causes stray corrosion on the workpiece. To overcome these shortcomings, we have developed a no-stray-corrosion ECM method called the controllable electrolyte distribution ECM (CED-ECM) method. However, its practical application in metal surface processing remains largely unexplored. In this study, to improve the CED-ECM method, we delved deeper into the aforementioned aspects by simulating the actual ECM process using COMSOL Multiphysics and rigorously validating the simulation results through practical experimental observations. Then, our efforts led to the application of the CED-ECM method to metal surface processing for the SUS304 workpiece, producing noteworthy results that manifest in diverse cross-sectional profiles on the processed surfaces. This research demonstrates a validated simulation framework for the CED-ECM process and establishes a method for creating user-defined surface profiles by controlling pass intervals, enabling new applications in surface texturing.
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http://dx.doi.org/10.3390/mi16070822 | DOI Listing |
Environ Sci Pollut Res Int
September 2025
Department of Chemistry Education, Farhangian University, P.O. Box 14665-889, Tehran, Iran.
This study introduces a back filter installed at the end of the exhaust pipe of city buses. The impact of the metal type used in its construction on the absorption of suspended particles and the reduction of sulfides in diesel engine exhaust gases is investigated. The back filter is constructed from three metals: copper, zinc, and nickel.
View Article and Find Full Text PDFEnviron Monit Assess
September 2025
College of Ecological and Environmental Engineering, Guizhou Minzu University, Guiyang, 550025, China.
The rapid development of industry and agriculture has led to a significant increase in the toxicity and pollution of cadmium (Cd) and lead (Pb) in soil. Consequently, soil remediation employing biochar or modified biochar has emerged as a cost-effective and environmentally sustainable approach to address the issue of heavy metal (HM) ion pollution. PEI-functionalization biochar (PBC) derived from corn straw (PBCC), wood straw (PBCW), and rice straw (PBCR) was synthesized to immobilize Cd and Pb in contaminated acidic yellow soil.
View Article and Find Full Text PDFInorg Chem
September 2025
Chemical Engineering Department, Delft University of Technology, 2629 HZ Delft, The Netherlands.
A key challenge in capturing CO from postcombustion gases is humidity due to competitive adsorption between CO and HO. Multivariate (MTV) metal-organic frameworks (MOFs) have been considered a promising option to address this problem, e.g.
View Article and Find Full Text PDFJ Prosthet Dent
September 2025
Full Professor and Department Head, Department of Prosthodontics, University of Heidelberg, Heidelberg, Germany.
Statement Of Problem: Despite high survival rates of implant-supported single crowns, retention loss remains common and decementation of crowns can compromise long-term stability, patient satisfaction, and treatment costs. Limited long-term evidence on cement type, abutment design, and materials requires further research to optimize clinical outcomes.
Purpose: The aim of this retrospective clinical study was to analyze the survival and decementation rates of zirconia and metal-ceramic implant-supported crowns in combination with different abutments (prefabricated or custom and unabraded or airborne-particle abraded).
Nihon Shokakibyo Gakkai Zasshi
September 2025
Department of Pathology, Japanese Red Cross Okayama Hospital.
An 86-year-old woman was under follow-up at the Breast Surgery Department of our hospital for postoperative treatment for right breast cancer. During this period, a 22-mm cystic mass was identified in the pancreatic head. Its size gradually increased, and she was eventually referred to our department.
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