Products

Holiday – Pinhole Detection

CSI supplies testing equipment to detect failures that will lead to premature corrosion of a substrate. A major cause is the presence of flaws in the finished coating.

Collectively referred to as porosity, the main types of flaws are:

  • Runs & Sags: Coatings move under gravity leaving a thin dry film.
  • Cissing: When a coating does not re-flow to cover the voids generated by air bubbles being released from the surface of a coating.
  • Cratering: If the substrate is wet or the coating has poor flow characteristics, voids are created in the coating.
  • Pinholes: Caused by air entrapment which is then released from the surface, or by the entrapment of particulates (dust, sand, etc.) which do not stay in place.
  • Over Coating: If too much coating is applied, internal stresses of the coating can cause it to crack as it cures.

 

Elcometer

 

 

 

 

 

 

For more information or to order give us a call at Toll-free: (800) 535-4564