1、 FORD LABORATORY TEST METHOD BS 001-02 Date Action Revisions 2000 11 10 Revised Editorial no technical change A. Cockman 1992 08 06 Printed copies are uncontrolled Page 1 of 2 Copyright 2000, Ford Global Technologies, Inc. INHIBITION OF CORROSION Application This procedure is used to evaluate the ru
2、st inhibiting properties of VCI treated Kraft paper. Apparatus Required Desiccator 5 inch with cover, washed in warm water and soap and rinsed in warm water and then in alcoh ol. Coat ground glass edges with stopcock grease to insure a tight seal. Plate Glass 1/8 x 3 1/2 x 1 1/2 inches. Steel Specim
3、en SAE 1020 round bar, size 1 x 1 inch. Sand smooth and clean with abrasive paper, ending with No. 120. Wash in warm alcohol a nd handle carefully to avoid finger contact. Volatile Corrosion Inhibitor Paper 3 x 6 inches. Oven Electric drying oven, large enough to accommodate the 5 inch desiccator. C
4、onditioning and Test Conditions All test values indicated herein are based on material conditioned in a controlled atmosphere of 23 +/ - 2 C and 50 +/ - 5 % relative humidity for not less than 24 h prior to testing and tested under the same conditions unless otherwise specified. Procedure 1. Place 1
5、5 mL of distilled or deionized w ater in the bottom of the desiccator. 2. Place the glass plate on the ledge of the desiccator. 3. Place the polished steel specimen on one end of the active side of the VCI paper, fold the other end over the steel specimen and butt the ends of the VCI pa per. Lay the
6、 assembly on the glass slide. FORD LABORATORY TEST METHOD BS 001-02 Page 2 of 2 Copyr ight 2000, Ford Global Technologies, Inc. 4. Place cover on the desiccator so that it is air tight. 5. Cycle the desiccator as follows: No. of cycles - 5. Each consists of: (exclude heating and cooling time) a. One
7、 h at 23 +/ - 2 C b. Two h at 140 +/ - 2 F c. One h at 23 +/ - 2 C d. Two h at 140 +/ - 2 F e. One h at 23 +/ - 2 C f. 17 h at 140 +/ - 2 F 6. Upon completion of the five test cycles, remove the steel specimen and rate the effectiveness of the VCI paper as follows: Code Rating Appea rance of Steel S
8、pecimen E Excellent No corrosion G Good Few pin points of corrosion but of minor degree F Fair 25 - 50 % of area corroded P Poor Failed over 50 % of area corroded Chemicals, materials, parts, and equ ipment referenced in this document must be used and handled properly. Each party is responsible for determining proper use and handling in its facilities.
