Influence of surface roughness on the corrosion behavior of Alloy 690TT in PWR primary water
作者： Myung Ji Seo , Hee-Sang Shim , Kyung Mo Kim , Sun-Ig Hong , Do Haeng Hur
DOI: 10.1016/J.NUCENGDES.2014.08.023
关键词: Surface finish 、 Metallurgy 、 Corrosion 、 Polishing 、 Alloy 、 Grinding 、 Hardness 、 Oxide 、 Surface roughness 、 Materials science
摘要: Abstract The purpose of this work is to investigate the effect surface roughness on corrosion behavior Alloy 690TT steam generator tube material in simulated primary water at 330 °C. was controlled range 710–25 nm by mechanical grinding and polishing method. Surface hardness gradually decreased with a decrease value. Polyhedral oxide particles were formed ground surfaces, whereas mixed oxides polyhedral strip-like type observed polished surface. rate about 64% as values from 710 150 nm. However, no further changes 150–25 nm.
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