新大気腐食試験装置を用いた長期室内実験

抄録

  Many types of cyclic corrosion test devices have been developed for simulating the atmospheric corrosion near seashore environment and most of test methods are doing dry/wet process after spraying NaCl solution or artificial seawater. In real environment, it has been observed that the corrosion rate is the highest where seasalt particles continuously attached on the surface of the metal and no cleaning process occurred by rainfall. In order to simulate this environment, we have developed a new atmospheric corrosion test device. Using this test device, long term atmospheric corrosion tests have been done under various seasalt deposition rates. The corrosion behaviour of steels in 0.2 mdd was similar to that in 1 mdd, so acclerating test can be done using this test device.