PACVD Coatings

Plasma Assisted Chemical Vapor Deposition

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Ionbond™ PACVD coating technology

The PACVD process is used for coating a very broad range of conductive and non-conductive substrate materials at temperatures below 200 °C. The typical thickness is in the range of 2 – 3 µm. The coatings are amorphous in structure and contain around 70% sp3 bondings, which accounts for the high hardness of the coating (10-40 GPa).

The ideal solution for tribological systems

DLC coatings feature excellent hardness, wear and low friction properties under dry or deficient lubrication conditions. They are ideally suited for tribological systems found in engines, machines and other mechanical assemblies with sliding and rolling movements. The perfect surface finish without any post-treatment makes them ideal for high precision injection molding tools as well as for decorative purposes. DLC is chemically inert and biocompatible which allows for its application on medical components and implants.

Broad range of substrate materials

No distortion of high precision substrates

No post treatment necessary

Gaseous process for uniform coating of 3D geometries without rotation

Green technology with respect to educts, process and products

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What is Plasma Assisted Chemical Vapor Deposition (PACVD)?

PACVD (Plasma Assisted Chemical Vapor Deposition) is a vacuum based process used to deposit DLC (Diamond Like Carbon) coatings, also known as ADLC (Amorphous Diamond-Like Carbon). All educts of the PACVD process are gaseous. This makes it suitable for coating 3D components uniformly, without the need for rotation as is necessary in PVD.

Frequently asked questions on PACVD coating services

Prior to coating, substrates (tools and components) need to be free of any foreign matter, oils and grease on the surfaces that are to be coated, but also in all other areas. The cleaning process is an essential element that determines the adhesion and thus influences the performance of the coated part or tool. All parts are cleaned by Ionbond prior to coating, using a designated process. Ionbond encourages customers to discuss the optimum requirements for their substrates in order to ensure top performance.

The degree to which masking can be performed depends on the process. Masking is generally easy in case of the PVD process, which is a line of sight process, but more difficult for the PACVD and very difficult in the case of CVD.

Typical lead times are 3 to 5 days. Test parts and samplings take more time as fixturing and process design is required.

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