The Use of Volatile Corrosion Inhibitors as a Preservative Medium for Long Term Storage Of Ordnance Materiel – Addendum Ⅶ Results After Ten Years of Exposure

摘要

Two volatile corrosion inhibitors and three petrolatum type corrosion preventives were evaluated after ten years in storage to determine their ability to prevent rusting of gun and howitzer tubes, recoil rods and cylinders, sintered iron specimens, and nonferrous specimens, and to establish the total amount of residual inhibitor on the wrappers.nThe work indicated that there was no significant differ¬ence in the overall protective effectiveness of the two types of volatile corrosion inhibitors. Minor instances of rusting were observed throughout the program, however, these were erratic and did not justify any statement concerning the superiority of one over the other.nIt was shown that the inhibited papers and the corrosion preventives produced no significant adverse effects on the stored materiel. Inasmuch as the controls did not rust, the comparative protective ability of the inhibited papers and the corrosion preventives is not readily evident.nConcerning the nonferrous specimens, little or no effect was noted on the majority of the specimens with both the inhibited papers and the corrosion preventives. The cadmium was affected by all, and most severely by one of the inhibited papers.nThe weight of loading values obtained showed no signi¬ficant change from previous inspections. In the majority of cases, the inhibitor content was found to be similar to the original loading as stated by the manufacturer.nThe overall results indicated that the volatile cor¬rosion inhibitors could be successfully utilized in the preservation of gun and howitzer tubes with a resultant savings in the time and labor required for preservation and packaging.