抄録
The corrosion behavior of stainless and carbon steels in high temperature and high pressure (HT/HP) water systems with addition of Zr and Si compounds was investigated. The corrosion of stainless and carbon steels was inhibited by addition of a Zr compound. This is due to formation of a stable film by Zr oxide and then the increase of protective ability of the film. Only corrosion of stainless steel was depressed by addition of a Si compound. It is thought that this is owing to depression of outer-diffusion and dissolution of CrO42- by adsorption of SiO32- on a steel surface and then stabilization of the film containing a Cr component.
