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首页> 外文期刊>Chinese journal of aeronautics >Electrochemical Behavior of Oxide Films of Stainless Steel in 40 kHz Sonicated Sulphate Electrolytes
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Electrochemical Behavior of Oxide Films of Stainless Steel in 40 kHz Sonicated Sulphate Electrolytes

机译：不锈钢在40 kHz超声处理硫酸盐电解质中的氧化膜的电化学行为

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摘要

This paper describes effects of 40 kHz ultrasound on the oxide films of stainless steel in sulphate electrolytes so as to determine the transmitted power and to characterize mass transfer and peak current density on the electrode surface. Emphasis was mainly laid on electrochemical oxidations and peeling mechanism of oxide films in sonicated sulphate solutions (0.5 and 1.0 mol/L). Polarization voltammetry, current response traces and SEM analysis were carried out in order to provide full information as to oxide films surface. Results shows that the rate of electrochemical oxidation, the shape of polarization curves and the surface micrographs in sonicated sulphate electrolytes are different from those obtained without introduction of ultrasound. It is concluded that ultrasound can change the electro-chemical behavior of oxide films by its cavitaion effects, which would produce transient mechanical impulsive force and enhance electrochemical reactions.
机译：本文介绍了40 kHz超声对硫酸盐电解质中不锈钢氧化膜的影响，以确定发射功率并表征电极表面上的传质和峰值电流密度。重点主要放在超声处理的硫酸盐溶液（0.5和1.0 mol / L）中氧化膜的电化学氧化和剥离机理。为了提供有关氧化膜表面的全部信息，进行了极化伏安法，电流响应曲线和SEM分析。结果表明，超声处理的硫酸盐电解质中的电化学氧化速率，极化曲线的形状和表面显微照片与未引入超声的情况不同。结论是超声可以通过其空化效应改变氧化膜的电化学行为，从而产生瞬态机械脉冲力并增强电化学反应。

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