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the Tantalum-Niobium International Study Center (T.I.C.) : T.I.C. Bulletin Entry – No. 187

An international, non-profit association founded in 1974 under Belgian law.

Bulletin Infomation

  • Bulletin Number: 187
  • Publication Date: October 2021

T.I.C. Bulletin Entry – No. 187

  • Bulletin Summary
This edition features the 2021 Ekeberg Prize-winning paper on tantalum machining challenges. It explores cutting mechanics, sinuous flow, and a novel mechanochemical effect using marker ink to improve cutting efficiency. The bulletin also includes updates on GA62 and T.I.C. staff appointments.
Explore the October 2021 edition of the T.I.C. Bulletin featuring the award-winning study on tantalum machining, GA62 preview, and industry news.
  • Key Themes: Tantalum machining, sinuous flow, segmented chips, Ekeberg Prize, mechanochemical cutting, additive manufacturing, supply chain, T.I.C. General Assembly
  • Related Metals: Tantalum, Niobium
  • Industries Covered: Defence, Manufacturing, Aerospace, Additive Manufacturing, Research
  • Keywords: tantalum cutting, Ekeberg Prize 2021, tantalum machinability, sinuous flow, marker ink cutting, GA62 London, TIC bulletin 187

Feature Article Title:

Cutting of Tantalum: Why It Is So Difficult and What Can Be Done About It

Feature Article Summary:

The 2021 Ekeberg Prize-winning paper by a US-Japanese research team investigates why tantalum is notoriously difficult to machine. Using high-speed imaging, it identifies sinuous plastic flow as the cause and demonstrates that applying a surface-adsorbing medium (e.g., permanent marker ink) transforms chip formation and improves machining efficiency.

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  • Author: Tantalum-Niobium International Study Center (T.I.C.)
  • The T.I.C. was established in response to concerns within the tantalum industry regarding the lack of useful information on tantalum source materials. The initial purpose of the T.I.C. was to spread information about tantalum and to promote the common interest and welfare of the producers, especially with public and private authorities, organisations and agencies. Since its foundation, the T.I.C. has grown to encompass niobium and all stages of the tantalum/niobium supply chains.

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