Conformal coatings are now used to protect many types of products, often while also making them safer to use and be around. A chemical process called vacuum deposition can be employed to produce conformal coatings that excel in a wide variety of potentially valuable ways. By using a gentle vacuum to attract and bind individual particles to a targeted surface, this technique produces particularly impressive coatings.
Vacuum Deposition Enables High-Quality Conformal Coatings
The particular characteristics required of a conformal coating will always depend on the specifics of the application. There are some generally useful traits, though, that are almost always sought in coatings of this general type.
Using a vacuum to deposit particles of an appropriately formulated coating on a surface often ends up being the best way to satisfy such requirements. Some of the benefits that vacuum-deposited conformal coatings most often feature relate to issues like:
- Precision. Just how closely and precisely a coating conforms to a surface will often be of the utmost importance. Overly thick coatings that fail to follow the contours of complex surfaces can render an otherwise acceptable object unusable for a particular purpose. Vacuum deposition allows coatings to be applied with impressive precision in just about every case.
- Penetration. Coatings are sometimes required to work their way through small apertures to enable sufficient coverage. The presence of a vacuum and the application of an atomized coating will generally enable high levels of penetration. That can make an enormous difference in situations where another coating process would leave underlying surfaces unprotected.
- Pinholes. Coating application methods that can result in the development of pinholes are unacceptable in many common situations. Pinholes most often form when slight variances in coating depth become exacerbated during the curing process. Vacuum deposition makes pinhole development less likely, allowing for particularly reliable coating.
The Best Way to Apply Certain Conformal Coatings
For reasons like these and others, using a vacuum to deposit a conformal coating often ends up being the best choice. Only certain coatings can be applied in this manner, as there are formulation-related requirements that have to be met. Coatings based on polymers like parylene often perform very well when applied in this manner.