Influence of electropolishing and anodic oxidation on morphology, chemical composition and corrosion resistance of niobium.
Influence of electropolishing and anodic oxidation on morphology, chemical composition and corrosion resistance of niobium.
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DOI：
10.1016/j.msec.2014.05.065
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发表时间：
2014-09
期刊：
影响因子：
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通讯作者：
Maciej Sowa;K. Greń;A. Kukharenko;D. M. Korotin;J. Michalska;L. Szyk-Warszyńska;M. Mosiałek;J. Zak;E. Pamuła;E. Kurmaev;S. Cholakh;W. Simka
中科院分区：
文献类型：
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作者：
Maciej Sowa;K. Greń;A. Kukharenko;D. M. Korotin;J. Michalska;L. Szyk-Warszyńska;M. Mosiałek;J. Zak;E. Pamuła;E. Kurmaev;S. Cholakh;W. Simka
这项工作介绍了纯铌在含有硫酸、氢氟酸、乙二醇和乙酰苯胺的电解液中进行电解抛光的研究结果。电解抛光后，在1 mol dm-3磷酸溶液中以不同电压对试样进行阳极钝化。分析了所得氧化层的表面形貌、厚度、粗糙度和化学成分。由此制备的铌样品在林格溶液中的耐腐蚀性方面进行了额外的研究。电解抛光的铌表面被确定为是光滑和光亮的。阳极化导致的障碍，像氧化物层，这是丰富的磷物种的生长。
The work presents results of the studies performed on electropolishing of pure niobium in a bath that contained: sulphuric acid, hydrofluoric acid, ethylene glycol and acetanilide. After the electropolishing, the specimens were subjected to anodic passivation in a 1 mol dm− 3phosphoric acid solution at various voltages. The surface morphology, thickness, roughness and chemical composition of the resulting oxide layers were analysed. Thusly prepared niobium samples were additionally investigated in terms of their corrosion resistance in Ringer's solution. The electropolished niobium surface was determined to be smooth and lustrous. The anodisation led to the growth of barrier-like oxide layers, which were enriched in phosphorus species.