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Understanding Erosion Patterns as Potential Sites for Corrosion Proliferation


 In the case of coated materials, any mechanical erosion at a specified location in a flow system will lead to chemical corrosion if the fluids are in contact with the eroded zone, which presents a favorable condition for corrosion growth. In contrast, corrosion of materials can worsen by mechanical erosion when corrosion has started destroying the texture of the subject material. In the present paper, we will review erosion-corrosion aspects of metallic systems based on particle impingement mechanisms’ Finnie model and its implication of different metallic materials. The paper summarizes the effects of fine particle impingement with regard to different flow situations that can lead to mechanical erosion that will affect the chemical reliability of the metal leading to potential harmful corrosion. The paper will provide a few recommendations to avoid such situations and achieve a sound mechanical and chemical reliability of the material system in use.