CVD coating
Chemical Vapor Deposition
Ionbond™ CVD services
The Ionbond™ CVD coating process, developed in the early 1970s, utilizes metal halides as coating precursors, including titanium tetrachloride (TiCl4) or aluminum trichloride (AlCl3). Over time, the technology has seen continuous improvements to meet the growing demand for high-quality, reliable coatings and enhanced productivity of both the process and equipment. The CVD coating process deposits coatings between 5 and 12 µm thick, and in special cases, up to 20 µm. Coating materials such as titanium carbide (TiC), titanium carbonitride (TiCN), titanium nitride (TiN), and aluminum oxide (Al₂O₃) are applied as single or multi-layers on inserts for cutting applications, forming and molding tools like punches, extrusion and trimming dies, and various mechanical components exposed to abrasive or corrosive environments.
What is CVD coating technology?
Chemical Vapor Deposition (CVD) is a coating method that creates low-stress coatings through thermally-induced chemical reactions. The coating material is supplied to the coating zone as vapor from the respective precursor, which then decomposes or reacts with additional precursors to form a thin film on the substrate. This CVD coating process can be done under vacuum or at atmospheric pressure, ensuring exceptional adhesion and uniformity. Ionbond also offers HFCVD diamond coating, a type of CVD diamond coating achieved by using a heated filament or wire to decompose hydrocarbon gases, providing additional options for clients requiring high-performance coatings.
For those comparing PVD and CVD options, Ionbond offers both PVD CVD coating services, allowing clients to choose the best fit for their needs. Whether you are interested in PVD, CVD, or a specialized PVD CVD coating, Ionbond can tailor the process to your product's unique requirements. Contact us to explore our Chemical Vapor Deposition services.
Whitepaper
CVD Coatings for Engineered Components
Download the whitepaper to get an insight and learn about CVD coatings and its benefits for your industrial components applications.
10 pages | 20 minutes well spent
Advantages of CVD coatings
The typical process temperature for Ionbond™ CVD coatings ranges from 900 to 1050 °C for HT CVD and 720 to 900 °C for MT CVD. Suitable substrate materials include tungsten carbides, tool steels, high-temperature nickel alloys, ceramics, and graphite. Tempered steel tools and components may need heat treatment post-coating to restore hardness.
Low stress
Coatings are engineered to have minimal stress levels.
Exceptional adhesion
Diffusion bonding enables strong adhesion.
Load-Bearing Capacity
Excellent for high-load applications.
Uniform Coating
Provides uniform coverage, independent of part geometry.
Complex geometries
Can coat intricate shapes, including certain inner diameters.
Frequently asked questions on CVD coating
CVD coatings reduce long term costs and increase efficiency. Costs are reduced due to longer-lasting tools and increased cutting speeds and feeds, which results in higher productivity. CVD coated tools can be run with dry or with minimum lubrication (or release agents in the case of forming tools) saving both operating and recycling costs. CVD coatings on mechanicals reduce friction and wear and improve performance and reliability.
Prior to coating, substrates (tools and components) must be free of foreign substances, oils, or grease on all surfaces, not only those to be coated. Proper cleaning is critical for optimal adhesion and maximum CVD coating performance. Ionbond’s process includes a thorough cleaning phase, and we encourage clients to discuss the ideal preparation for their specific substrates.
The CVD coating processes produce uniform and homogeneous coatings on the outside and the inside of the part or tool, which rests static in the chamber.
Masking is generally easy with PVD, a line-of-sight process, while masking for PACVD is more challenging, and for CVD it is quite difficult. Contact us to discuss masking options for PVD and CVD coatings.
Typical lead times for both PVD and CVD coating services are usually 3 to 5 days. Test parts and sampling may take additional time for fixturing and process design.
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