A modified method for evaluation of materials containing volatile corrosion inhibitor

A systematic research on a modified method that was developed to evaluate the effectiveness of volatile materials was carried out. The metal specimen in size of 50 mm x 25 mm x 2 mm was level the top of a beaker by transparent adhesive tape and the assembly was placed in a constant temperature kept at approximately 40 degrees C to accelerate the vaporization of VCI and distilled water, which was bottom of the beaker at the same time. The experimental results show that the reproducibility of rust corrosion rate calculated by specimen's mass loss is perfect. The outstanding characteristic of the on different VCI formula is discovered that is very important in studying the mechanism of VCI the synergism of chemical reagent. The accelerated ratio is increased greatly as compared with the tradition the value is approximately 15 as compared with Shijiazhuang atmospheric environment corrosion test. method is suitable formula screening test and quick effectiveness evaluation of VCI materials.