Fig. 4. The final stage of damage to the attacked wire. You may see three areas: The area of plastic fracture with “dimples” in the middle of the sample; Thin area of brittle fracture along the sample circumference; The area of brittle fracture at the corrosion crater with cracks. Picture produced by scanning electron microscope (Quanta 3D; FEI).

Gastrointestinal Intervention 2016;5:98~104 https://doi.org/10.18528/gii160008

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