The local corrosion which can not explain the cause by conventional theorys, ununiform material, concentration cell, or erosion, are frequently found actual equipment as petroleum refinery.
And these corrosion has relation with the bubbling.
The author studied the influence of the bubbling on such local corrosion by experience and experiment.
The results obtained were as follows:
(1) Owing to contact with gas phase and liquid phase alternately, distribution of energy are changed on metal surface, and accelerated the corrosion.
(2) The bubbles in the liquid has equivalent energy to heat and mechanical in order to make the bubbles.
(3) Kind of gas, liquid and metal are make change the energy of metal surface.
(4) The name “alternate phase effect” are proposed as new theory.
