Formation of porous TiOx biomaterials in H3PO4 electrolytes
Formation of porous TiOx biomaterials in H3PO4 electrolytes
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DOI：
10.1016/j.elecom.2008.02.027
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发表时间：
2008-05-01
影响因子：
5.4
通讯作者：
Jakubowicz, J.
中科院分区：
文献类型：
--
作者：
Jakubowicz, J.
研究了多孔TiOx涂层的形成及其腐蚀行为。H3 PO 4电解质的应用导致多孔TiOx形成。电解液中含有少量的HF可增强该过程。HF导致更高的电流密度，增强溶解。小的0.5%HF浓度导致纳米孔形成，具有约45 nm的孔径。HF浓度增加到10%，导致孔的平均直径约为5.2 μ m。蚀刻时间的增加导致更大的孔径，但在2-5 μ m直径的大孔之间观察到直径小于200 nm的最小孔。在初始蚀刻过程中，平坦表面的残余物在表面中存在初始裂纹，指示孔生长的位置。在林格氏溶液中的腐蚀行为的研究层，显示出优异的耐腐蚀性，相对于纯钛。(C)2008 Elsevier B. V.保留所有权利。
In this work, formation of porous TiOx layers and theirs corrosion behavior were studied. Application of H3PO4 electrolytes results in porous TiOx formation. The process is enhanced by small amount of HF content in the electrolyte. The HF results in higher current density, enhancing dissolution. Small 0.5% HF concentration results in nanopores formation, with pore diameter of about 45 nm. Increase of HF concentration up to 10% results in pores with average diameter of about 5.2 mu m. An increase of etching time results in larger pore diameter, but between large 2-5 mu m diameter pores smallest ones were observed with diameter below 200 nm. In the initial etching process a remnants of the flat surface are presents with initial cracks in the surface, indicating places for growth of the pores.The TiOx layers can be used as a biomaterial. The corrosion behavior of the layer investigated in Ringer's solution, revealed an excellent corrosion resistance, with respect to pure Ti. (C) 2008 Elsevier B.V. All rights reserved.