Effects of stirring action during friction on electrode processes of AISI 304 stainless steel in sulphuric acid
Effects of stirring action during friction on electrode processes of AISI 304 stainless steel in sulphuric acid
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摩擦过程中搅拌作用对AISI 304不锈钢在硫酸中电极过程的影响
DOI：
10.1016/j.electacta.2018.12.158
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发表时间：
2019-03
影响因子：
6.6
通讯作者：
Lijie Qiao
中科院分区：
文献类型：
--
作者：
Zening Wang;Yu Yan;Yanjing Su;Lijie Qiao
摩擦学接触可以加速钝化膜合金的阳极反应。在摩擦学接触条件下，材料中的阴极反应在文献中较少受到关注。AISI 304不锈钢表面在0.5mol/L硫酸溶液中进行线性往复滑动摩擦。使用带有磨损试验机的集成腐蚀试验单元。当施加搅拌作用时，观察到OCP的阳极位移。搅拌作用也导致了阴极位移的测量电流和极性反转时，样品是恒电位极化在阳极电位在活性区域。当施加低阴极电位时，通过搅拌实现电流密度的增加。然而，当施加较高的阴极过电位时，搅拌并没有引起电流密度的任何显著变化。这是由于氢气泡的快速沉淀加速了电极表面上的传质的气泡演化诱导的对流。结果表明，在缓慢析氢状态下，外加搅拌作用可加速电极表面的析氢动力学。此外，增加摩擦频率可能导致电流瞬变幅度的增加。
It is known that tribology contact can accelerate the anodic reaction in alloys with passive films. Less attention has been paid in the literature on the cathodic reaction in materials under tribology contact. An AISI 304 stainless steel surface was subjected to linear reciprocating sliding friction in a 0.5 mol/L sulphuric acid solution. An integrated corrosion test cell with a wear tester was used. When stirring action was applied, an anodic shift of the OCP was observed. Stirring action also resulted in a cathodic shift of the measured current and polarity reversal when the sample was potentiostatically polarised at anodic potentials in the active region. An increase in current density was achieved by stirring when low cathodic potential was applied. Stirring, however, did not cause any significant change in current densities when a higher cathodic overpotential was applied. This was due to the bubble evolution-induced convection of the rapid precipitation of hydrogen bubbles accelerating mass transfer on the electrode surface. It was found that external stirring action could accelerate the kinetics of hydrogen evolution on the electrode surface in a state of slow hydrogen evolution. In addition, increased friction frequency could result in an increase in the amplitude of current transients.
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影响因子：
6.6
作者：
B. Jović;V. Jović;G. Branković;M. Radovic;N. Krstajić
通讯作者：
B. Jović;V. Jović;G. Branković;M. Radovic;N. Krstajić
DOI：
--
发表时间：
2012
期刊：
--
影响因子：
--
作者：
R. Loto;C. Loto;A. Popoola;M. Ranyaoa
通讯作者：
R. Loto;C. Loto;A. Popoola;M. Ranyaoa
影响因子：
5
作者：
J. Wharton;R. Wood
通讯作者：
J. Wharton;R. Wood
影响因子：
8.3
作者：
Jian Xu;Xinqiang Wu;E. Han
通讯作者：
Jian Xu;Xinqiang Wu;E. Han
影响因子：
5
作者：
M. Hong;S. Pyun
通讯作者：
M. Hong;S. Pyun