Chemical Vapor Aluminizing (CVA) is based on the CVD process and is used for depositing CVD aluminide coatings for high temperature applications. The Bernex ATL CVA is an advanced technology that offers a more environmentally friendly, better forming alternative to older pack, out of pack and slurry technologies.

Process Temperature
The typical process temperature for the CVA process is between 900(°) C and 1050(°) C.

Items Typically Coated
The CVA process is used to protect parts operating in high temperature environments against corrosion and oxidation. As a result, the most common parts coated are high temperature industrial and aero gas turbine components, such as the hot section turbine blades.  

Coatings Typically Deposited  
The CVA process produces a highly controllable, extremely homogeneous aluminide diffusion layer. Unlike other aluminizing processes, the Bernex ATL process is suitable for coating the internal cooling channels of turbine blades.

Advantages of the process:

Clean process compared to

pack and slurry techniques

• The process is precisely controlled
• It is possible to coat internal cooling channels
• The coating is uniformly deposited
• Low surface defect density