Abstract
It has recently caused a public trouble that local corrosions frequently appear on the surface of a coiled tape measure, of which the steel surface is coated with a resin called “epicoaton” in trade name. The corrosions appear on the practice of users, though they were not known by the manufacturer.
The cause and prevention of these corrosions were studied and the principal results obtained were as follows:
1) The leading factor affecting these corrosions was initial rusts which were microscopically observed on the coiled surface of the base steel.
2) The use of some inhibitors (such as oleic acid) in descaling process was effective for the prevention of these corrosions.
