| 摘要 |
PURPOSE:To prevent the corrosion of a corrodible substance on which piezoelectricity or pyroelectricity is generated by pressurization or heating, by applying an AC electric field or the like to the generating source of the corrodible substance. CONSTITUTION:When dynamic energy is applied to a corrodible substance M such as iron or stainless steel by pressurization or heating, the energy is converted into electric energy to generate piezoelectricity or pyroelectricity which causes the corrosion of the substance M. At this time, a circuit L1 is formed between contact points A1, A2 set on both sides of the generating source E1 of the substance M, and AC is supplied to control generated electric current. A coil 5 may be directly wound around the source E1 so as to apply a magnetic field by the supply of AC, or a permanent magnet 6 may be stuck to the source E1. Thus, generated piezoelectricity or pyroelectricity is controlled to prevent the corrosion of the substance M.
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