Rust preventive oil is used for relatively short periods of time, such as during storage and transportation during the manufacture of metal parts. It is one of the rust prevention means used for the purpose of temporary rust prevention for a period of time.

In recent years, rust prevention Even in the field where oil is involved, it is natural to have “things” available, and parts do not rust. The common sense of the past, which was taken for granted, is no longer necessarily valid. I feel that the importance of technology, as well as the existence and usefulness of rust preventive oil, is being reconsidered.

Therefore, in this report, the types, base materials used, mechanism of action, Describes the required performance, usage precautions, recent trends, and future prospects.

In order to analyze the effect of beta particles in solution on the corrosion of Type 316L stainless steel, the effect of dissolved ⁹⁰Sr on the corrosion potential was investigated. ⁹⁰Sr standard solution and ¹³⁷Cs standard solution were dropped into HCl while the corrosion potential was measured in HCl. As a result, the potential increase in the solution with ⁹⁰Sr standard solution was larger than that in the solution with ¹³⁷Cs standard solution. The results were verified by calculations, which show that the difference in the rate of formation of H₂O₂ in solution due to water radiolysis causes a difference in the change in potential in both solutions.

The purpose is to inherit the technical properties of the past as much as possible to manufacture Japanese nails, Wakugi, used for preservation and repair of Japanese wooden buildings. Therefore, we investigated the technical properties of Wakugi from the Azuchi-Momoyama period to the Edo period, when Tatara ironmaking reaches maturity, from the viewpoints of chemical composition, surface film structure, and corrosion resistance. Prevention of iron stain on wood and long-term corrosion resistance were evaluated by electrochemical measurements and accelerated corrosion tests on Wakugi made by hot forging by handmade work by blacksmiths.