Electrolyte influence on ignition of plasma electrolytic oxidation processes on light metals
Electrolyte influence on ignition of plasma electrolytic oxidation processes on light metals
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电解质对轻金属等离子电解氧化过程点火的影响
DOI：
10.1016/j.surfcoat.2017.02.041
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发表时间：
2017
影响因子：
5.4
通讯作者：
Thomas
中科院分区：
文献类型：
--
作者：
Simchen;Sieber;Maximilian;Lampke;Thomas
等离子体电解氧化（PEO），也称为等离子体阳极氧化或微弧氧化（MAO），是一种合适的方法来改善阀门金属的表面特性。微弧放电，出现在水电解质在强阳极极化下的工件，是典型的这个过程。放电启动讨论有争议。矛盾的理论，主要是基于钽的研究，存在关于电解阴离子的意义，这是最初纳入阳极膜。对铝、镁和钛进行了双步极化和PEO实验，这些材料实际上用作轻质建筑材料。对于Al 99.5、AZ31和TiAl 6V4，可以表明，在阳极膜中掺入电解质阴离子对于点火过程是不需要的。此外，通过极化实验，以AZ31为例，研究了硅酸盐、铝酸盐和氢氧化物溶液的电解质电导率对点火电压的影响。已经证明，不是电解质电导率，而是其在电解质/基板界面处的特定电子注入能力限定点火电压。这种注入能力取决于电解质阴离子的种类和浓度。
Plasma electrolytic oxidation (PEO), also called plasma anodizing or micro arc oxidation (MAO), is an appropriate method to improve surface characteristics of valve metals. Micro arc discharges, which appear at the working piece in an aqueous electrolyte under strong anodic polarization, are typical for this process. The discharge initiation is discussed controversially. Contradicting theories, which are mainly based on investigations of tantalum, exist concerning the meaning of electrolytic anions, which are initially incorporated in the anodic film. Dual step polarization and PEO experiments were carried out on aluminum, magnesium, and titanium, which are in practical use as lightweight construction materials. For Al 99.5, AZ31, and TiAl6V4 it could be shown that the incorporation of electrolytic anions in the anodic film is not required for the ignition process. Also, the influence of electrolyte conductivity on the ignition voltage was investigated by polarization experiments with silicate, aluminate, and hydroxide solutions using the example of AZ31. It has been demonstrated that not the electrical electrolyte conductivity, but its specific electron injection ability at the electrolyte/substrate interface defines the ignition voltage. This injection ability depends on the kind and concentration of the electrolytic anions.
影响因子：
5.4
作者：
M. Sieber;T. Mehner;D. Dietrich;G. Alisch;D. Nickel;D. Meyer;I. Scharf;T. Lampke
通讯作者：
M. Sieber;T. Mehner;D. Dietrich;G. Alisch;D. Nickel;D. Meyer;I. Scharf;T. Lampke
相转化温度作为评价乳液稳定性的加速方法
DOI：
--
发表时间：
1972
期刊：
影响因子：
--
作者：
C. Parkinson;P. Sherman
通讯作者：
P. Sherman
DOI：
--
发表时间：
1960
期刊：
影响因子：
--
作者：
M. Pourbaix
通讯作者：
M. Pourbaix