Micromachining Using Electrochemical Discharge Phenomenon

Micromachining Using Electrochemical Discharge Phenomenon

Fundamentals and Application of Spark Assisted Chemical Engraving

2nd Edition - November 8, 2014

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  • Authors: Rolf Wuthrich, Jana D. Abou Ziki
  • eBook ISBN: 9780323265645

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Micro-machining is an advanced manufacturing technique of growing importance, and adoption of micro-machining using electrochemical discharges (Micro-ECDM) has increased steadily in recent years. Among new developments is the interest of industry in Micro-ECDM. However, the potential of the technology is not being fully utilized and there is no comprehensive reference book available today covering it.Micromachining Using Electrochemical Discharge Phenomenon, Second Edition fills this gap. It is unique in its detailed coverage of all aspects of the Micro-ECDM process, as well as Spark Assisted Chemical Engraving (SACE). As such, it covers technologies such as chemical etching, micro-drilling, and other material removal mechanisms, high aspect ratio machining, design and construction of the machining apparatus, and a wide range of applications.The new edition compares Micro-ECDM and SACE with other micromachining technologies such as laser machining and traditional EDM.ECDM is used for machining of electrically non-conductive materials. Micro-ECDM/SACE is mainly applied to glass and the book focuses on glass, but the authors also present new results on other materials such as ceramics. In addition, techniques to modify material properties for the machining process are explained.The authors discuss machining strategies including the latest developments in micro-texturing of glass micro-channels and reports on developments in controlling and analysis aspects of machining.This book is a unique reference for engineers and industrial researchers involved in development, design and use of micromachining, chemical micro-drilling or chemical engraving techniques and equipment.

Key Features

  • Only all-encompassing reference coving Micro-ECDM and SACE available on the market
  • Covers a wide range of applications, including applications in the MEMS industry and the Medical Devices and Medical Diagnostics industries
  • New edition includes expanded sections on comparing Micro-ECDM/SACE with other micromachining technologies


Engineers, industrial researchers, and research students involved in development, design and using of micromachining, chemical micro-drilling or chemical engraving techniques and equipment. Industries include MEMS and Medical Devices/Diagnostics

Table of Contents

    • Preface
    • Chapter 1. Machining with Electrochemical Discharges—An Overview
      • 1.1. Spark-Assisted Chemical Engraving
      • 1.2. SACE as a Micromachining Technology
      • 1.3. Scope of the Book
    • Part 1. Electrochemical Discharges
      • Chapter 2. Historical Overview of Electrochemical Discharges
        • 2.1. Discovery and Early Applications
        • 2.2. The Wehnelt Interrupter
        • 2.3. Spectrum of the Electrochemical Discharges
        • 2.4. Nature of the Electrochemical Discharges
        • 2.5. Contact Glow Discharge Electrolysis
      • Chapter 3. Gas-Evolving Electrodes
        • 3.1. Introduction to Electrochemistry
        • 3.2. Bubble Formation During Electrolysis
        • 3.3. Bubble Layer
        • 3.4. The Bubble Diffusion Region
        • 3.5. The Bubble Adherence Region
        • 3.6. Bubble Evolution on a Gas-Evolving Electrode
        • 3.7. Mean Stationary Current–Voltage Characteristics
      • Chapter 4. The Gas Film—A Key Element
        • 4.1. Formation of the Gas Film
        • 4.2. Gas Film Lifetime
        • 4.3. Shape of the Gas Film
        • 4.4. Discharge Activity Inside of the Gas Film
        • 4.5. Active Electrode Temperature
        • 4.6. Controlling the Gas Film
    • Part 2. Micromachining With Electrochemical Discharges
      • Chapter 5. Material Removal Mechanism
        • 5.1. General Considerations
        • 5.2. Machining at Low Depths
        • 5.3. Machining at High Depths
        • 5.4. Chemical Contributions
        • 5.5. Summary
      • Chapter 6. Common Machining Strategies
        • 6.1. General Overview
        • 6.2. Gravity-Feed Drilling
        • 6.3. Constant Velocity-Feed Drilling
        • 6.4. 2D and 3D Machining
        • 6.5. Wire Electrochemical Discharge Machining
      • Chapter 7. Controlling the Machining Process
        • 7.1. Process Analysis
        • 7.2. Promoting Etching
        • 7.3. Controlling the Heat Generated
        • 7.4. Controlling the Tool–Workpiece Gap
        • 7.5. Searching for Process Control Signals
        • 7.6. Summary
      • Chapter 8. Designing a SACE Micromachining Set-up
        • 8.1. General Design Rules
        • 8.2. Drilling Set-Ups
        • 8.3. 2D Machining Set-Ups
        • 8.4. Commercial Machines
      • Chapter 9. Outlook
    • References
    • Index

Product details

  • No. of pages: 218
  • Language: English
  • Copyright: © William Andrew 2014
  • Published: November 8, 2014
  • Imprint: William Andrew
  • eBook ISBN: 9780323265645

About the Authors

Rolf Wuthrich

Affiliations and Expertise

Concordia University, Canada

Jana D. Abou Ziki

Affiliations and Expertise

Concordia University, Canada

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