And, CPT can be performed as part of our in-line process control, vs. The CPT test eliminates inconsistent results of surface testing caused by possible variations among labs. SEMI has adopted the ASTM® G150 Standard Test Method for Electrochemical Critical Pitting Temperature Testing of Stainless Steels in the SEMI F77 standard, as an alternative to traditional surface analysis. Swagelok has pioneered with Semiconductor Equipment and Materials International (SEMI) on the use of the Critical Pitting Temperature (CPT) test for determining corrosion resistance. Passivation uses an acid bath to further enhance the material’s corrosion resistance by creating an inert passive layer that protects against damage from external elements. Additionally, this process results in a smoother wetted surface and reduced wetted surface area, which improves dry-down and system purge times. Corrosion resistance is improved as a result of an enhanced chrome-to-iron ratio on the treated surface.
0 Comments
Leave a Reply. |