The SilcoTek® Coating Process

At SilcoTek, we partner with each customer to ensure we deliver the world’s best surface treatments in an efficient and high-quality manner. Watch our video to see how we process your parts from receipt until they’re coated and ready to be returned.


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Surface preparation

SilcoTek uses proprietary surface preparation methods in order to ensure the best coating possible.

It is important to know that any surface imperfections like scratches, rough surfaces, or widely varying surface characteristics, will be highlighted by the coating process, not hidden.

Chemical vapor deposition coating process

After a thorough surface preparation, our technicians load customer parts into a vacuum vessel corresponding to the size of the parts.  This vessel is placed in a large oven and connected to the raw material – gas – then heats to temperatures near 400° C.  Throughout this process, a proprietary blend of gas enters the vessel and starts a reaction which diffuses the treatment into the molecular lattice of the substrate, forming the ultra-thin SilcoTek coating that so many have come to recognize and trust.

To illustrate this, we coated a 1/16″ OD, .4mm ID tube with multiple bends both internally and externally.  After coating, the tube was cut open to examine the coating at the center-most point inside the tube.  In addition to the external coating on the tube, a quick visual inspection shows the vibrant purple-colored SilcoTek coating inside the narrow bore.

The thickness of the coating throughout the tube was verified by a Filmetrics F40-Series Thin Film Analyzer and confirmed to meet our specifications.  SilcoTek coatings are not applied with line-of-sight processes like spraying that lead to inconsistent deposition and uncoated areas.  With our process, 100% of your parts are coated, even if the design is complex or the pathways are tortuous.

Quality inspection

Once the coating process is complete, your Silco’d parts are unloaded and moved to the inspection area.  Coating quality is initially verified by average surface contact angle measurements on a process control coupon.

Silco Technicians then visually inspect each part to ensure conformal thickness and proper aesthetics.  Parts that pass inspection are issued a coating certification adherent to ISO 9001.