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TiCN

What is TiCN?

TiCN, also known as titanium carbonitride, is a highly valued PVD (Physical Vapor Deposition) coating that combines the properties of titanium nitride (TiN) and titanium carbide (TiC). This combination provides outstanding resistance to wear and thermal effects, making it a popular coating for a wide range of demanding machining processes.

Manufacturing TiCN Coating with the PVD Method

Coatings made using the PVD method are thin, hard, and smooth films that form on the tool’s surface from vaporized material. In manufacturing TiCN coatings, titanium, nitrogen, and carbon are used, which react to form an extremely durable composite film.

Technical Properties of TiCN Coating

  • Hardness: TiCN coatings are extremely hard, with a microhardness of about 3000-4000 HV, which is higher than traditional TiN coating.
  • Heat resistance: TiCN coatings have high heat resistance, allowing them to be used in machining at elevated temperatures. While it may not withstand quite as high temperatures as TiAlN, its properties are still significant.
  • Lower coefficient of friction: The TiCN coating reduces friction between the tool and the workpiece material, improving surface finish and reducing tool wear. This characteristic is especially valuable in high-speed machining and when working with challenging materials.
  • Excellent wear resistance: TiCN is highly resistant to wear and provides outstanding edge stability, which increases tool life under demanding machining conditions.

Advantages of TiCN Coating

  • Improved performance: The TiCN coating prevents the formation of built-up edges and improves tool wear resistance. This enables higher machining speeds while reducing the need for tool changes.
  • Longer service life: Thanks to its wear resistance and low coefficient of friction, TiCN-coated tools last significantly longer than uncoated ones.
  • Versatile applications: TiCN is an ideal coating especially for demanding high-speed machining processes, providing a wide range of uses for different machining materials and techniques.

Applications for TiCN Coatings

  • Drills and Taps: TiCN is a very popular coating for drills and taps. It enhances drilling performance, extends tool life, and reduces machining forces, allowing for greater accuracy and quality.
  • Threading dies: When used as a coating for threading dies, TiCN offers excellent performance and wear resistance, which is particularly beneficial for hard materials.
  • Cutting tools: Milling and turning tools benefit from TiCN’s exceptional edge stability and wear resistance, resulting in longer tool life and superior surface finish.

Summary

TiCN coating is an excellent choice for tool manufacturers and users who require high wear resistance and performance in demanding machining environments. By combining the best properties of titanium nitride and titanium carbide, TiCN delivers a durable and effective solution for a wide variety of machining applications, significantly improving both tool life and performance.