Standard Test Method of Salt Spray (Fog) Testing.
COATING SYSTEM:
PROTECTO 401 CERAMIC EPOXY Lining: Plant applied epoxy lined ductile iron pipe (DIP) cut into 4 inch x 6 inch coupons.
PROCEDURE:
Using the ASTM B 117 salt fog apparatus and procedures with the exception that the film was not scribed so as to allow observation of underfilm corrosion creep along cut edges of coupon. Duration of the test was 1080 hours (45 days).
| PANEL NUMBER | AVERAGE MM COROSION UNDERCUT ABOUT PERIPHERY OF COUPON |
|
147 |
0 mm |
|
148 |
0 mm |
|
149 |
0 mm |
There was no corrosion undercutting of the coating although heavy corrosion product developed along the unprotected edges. Coating could not be forced to delaminate by vigorous probing.
CERTIFIED:
Dr. George Mills
GEORGE MILLS & ASSOCIATES INTERNATIONAL, INC.
HOUSTON
P.O. Box 847 | Humbler, TX 77347
Tel: (713) 852-7600 | Fax: (713) 852-8777
NASHVILLE
3133 Knobview Drive
Nashville, TN 37214
Tel: (615) 391-4785 | Fax: (615) 885-9655
DATE: March 14, 1994
