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51312-01109-THE ULTRASONICALY INDUCED CAVITATION CORROSION BEHAVIOR OF UNS R31233 ALLOY IN SEAWATER

Picture for THE ULTRASONICALY INDUCED CAVITATION CORROSION BEHAVIOR OF UNS R31233 ALLOY IN SEAWATER
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Product Number: 51312-01109-SG
ISBN: 01109 2012 CP
Author: A.Hameed Al-Hashem
Publication Date: 2012
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A vibratory induced cavitation facility was used to study the cavitation corrosion behavior of UNS R31233 alloy in seawater. The work included measurements of free corrosion potentials and mass loss in the presence and absence of cavitation. The cavitation tests were made at a frequency of 20 KHz and at temperatures of 250C. Cavitation conditions caused an active shift in the free corrosion potential for UNS R31233 alloy. Cavitation also very slightly increased the rate of mass loss of this alloy with respect to stagnant conditions. Another set of cavitation experiments was also carried out for this alloy in a nonconductive medium in order to distinguish between the mechanical and electrochemical factors that contribute to metal loss. Results indicated that the mechanical factor has an over riding role in metal loss of this alloy. Cavitation made the surface of this alloy slightly rough exhibiting very small cavity pits in the middle region of the attacked area as revealed by the scanning electron microscope (SEM). Mechanical factors were determined to be the leading cause of metal loss. Keywords: Wear resistant alloy distilled water rate of metal loss free corrosion-potential.
A vibratory induced cavitation facility was used to study the cavitation corrosion behavior of UNS R31233 alloy in seawater. The work included measurements of free corrosion potentials and mass loss in the presence and absence of cavitation. The cavitation tests were made at a frequency of 20 KHz and at temperatures of 250C. Cavitation conditions caused an active shift in the free corrosion potential for UNS R31233 alloy. Cavitation also very slightly increased the rate of mass loss of this alloy with respect to stagnant conditions. Another set of cavitation experiments was also carried out for this alloy in a nonconductive medium in order to distinguish between the mechanical and electrochemical factors that contribute to metal loss. Results indicated that the mechanical factor has an over riding role in metal loss of this alloy. Cavitation made the surface of this alloy slightly rough exhibiting very small cavity pits in the middle region of the attacked area as revealed by the scanning electron microscope (SEM). Mechanical factors were determined to be the leading cause of metal loss. Keywords: Wear resistant alloy distilled water rate of metal loss free corrosion-potential.
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