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Low Coefficient of Friction

Compared to its alloy, PVD coating significantly reduces the surface friction coefficient. A lower coefficient of friction minimizes resistance to movement and ensures smoother operation of mechanical components, eliminating the need for lubrication. 

  1. Titanium Nitride (TiN):TiN, which has a golden yellow color, is generally used in cutting tools to reduce friction and extend tool life.

  2. Titanium Carbonitride (TiCN): Having a gray-blue color, TiCN is slightly harder than TiN and has a low coefficient of friction. Ideal for cutting, drilling and other metalworking applications.

  3. Aluminum Titanium Nitride (AlTiN):Capable of reducing friction even under high temperature conditions, this coating is ideal for cutting tools operating at high temperatures.

  4. Diamond Like Carbon (DLC): DLC coatings have high hardness and a very low coefficient of friction, similar to some properties of natural diamond. Ideal for automotive components, bearings, surgical instruments and many other applications.

  5. Chromium Nitride (CrN): This coating is particularly used for plastic molding applications because it reduces friction with plastic materials.

Each of these coatings may have properties optimized for specific applications. Besides the coefficient of friction, other important factors include hardness, adhesion, corrosion resistance and oxidation resistance.

Here are some situations where PVD coating technology is used to reduce friction:

  • Sharp tools: PVD coatings (for example, TiN, TiCN, AlTiN) on machine tools, drill bits, end mills and other cutting tools can improve the cutting performance of the tool and extend the tool life. The coatings also help reduce heat by reducing friction, which means less wear and less energy consumption when cutting.

  • Engine Components: In the automotive and air transport industries, PVD coatings are used to reduce friction and wear of engine components. This can increase engine efficiency and reduce maintenance costs.

  • Medical Implants: Medical implants such as joint prostheses use PVD coatings to reduce friction and increase biocompatibility. This provides a longer lasting and more comfortable solution for patients.

  • Bearings and Gears: In mechanical systems, PVD coatings on bearings and gears can reduce friction and minimize energy losses.

  • Sports Equipment: Some sports equipment uses PVD coatings to improve performance and reduce friction. For example, golf clubs can use PVD coatings to optimize the ball's contact with the surface and reduce friction.

In each of these applications, PVD coating reduces friction and wear, optimizing performance, lowering energy consumption and extending product life. These advantages have made PVD coating popular in a wide range of industries.

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