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Electrochemical behavior of Inconel 718 fabricated by laser solid forming on different sections
Corrosion Science ( IF 8.3 ) Pub Date : 2018-03-01 , DOI: 10.1016/j.corsci.2017.12.021
Pengfei Guo , Xin Lin , Jiaqiang Li , Yufeng Zhang , Menghua Song , Weidong Huang

Abstract Microstructural analysis and electrochemical behavior of Inconel 718 fabricated by laser solid forming on horizontal section (HS) and vertical section (VS) were investigated. The electrochemical results show that the corrosion resistance on HS and VS have no difference in 10 wt.% NaNO 3 solution. However, HS possesses lower surface products resistance at low current densities due to the tube-like distribution of secondary phases. Besides, their higher current efficiencies at low current densities are mainly attributed to the undissolved phases being flushed away by the flowing electrolyte. The fast detachment rates of secondary phases at high current densities improve the surface quality.

中文翻译:

激光固体成形Inconel 718不同截面的电化学行为

摘要 研究了激光固体成形Inconel 718在水平截面(HS)和垂直截面(VS)上的显微组织分析和电化学行为。电化学结果表明,在10 wt.% NaNO 3 溶液中,HS 和VS 的耐蚀性没有差异。然而,由于二次相的管状分布,HS 在低电流密度下具有较低的表面产物电阻。此外,它们在低电流密度下的较高电流效率主要归因于未溶解的相被流动的电解质冲走。在高电流密度下,第二相的快速脱离速率提高了表面质量。
更新日期:2018-03-01
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