Preparation of Bioactive Tantalum Metal via Anodic Oxidation Treatment

Abstract

After the Tantalum metal was subjected to the anodic oxidation at suitable voltage in 2M H2SO4 solution, tantalum oxide with rhombic or amorphous structure formed on the metal surface. The Oxide showed apatite formation ability in simulative body fluid at 6d. It meant the anodic oxidation treatment ia an effective method to accelerate the bioactivity of tantalum metal.

Review of Anodic Tantalum Oxide Nanostructures: From Morphological Design to Emerging Applications

“…Subsequent efforts were made to understand the rate controlling step and the movement/migration of metal ions during the anodic oxide growth on Ta. 90,103 For example, B. Verkerk et al 103 investigated the mechanism of tantalum oxide growth utilizing 3− and BO − throughout the outer layer. However, for tungstate, molybdate, chromate, and vanadate electrolytes, the incorporated impurities (W, Mo, Cr, and V) or anion species were suggested to be present only in the outermost layer, with the thickness too small to be determined by SIMS.…”

“…This study, for the first time, demonstrated the migration of metal ions through the oxide layer during its growth. Subsequent efforts were made to understand the rate controlling step and the movement/migration of metal ions during the anodic oxide growth on Ta. , For example, B. Verkerk et al investigated the mechanism of tantalum oxide growth utilizing radioactive labeling techniques. In 1972, E. Gunzel examined the anodization of Ta in electrolytes, such as chromic acid, phosphoric acid, sulfuric acid, and citric acid with variations in concentrations.…”

“…The size, morphology, crystallinity, and impurity content of ATO or ATO-derived materials can significantly influence their physicochemical properties. ,− ,,,,,,,,,,,,,− Although ATO-based capacitors have been investigated since the 1980s/1990s, ,, in the last two decades, efforts have also been made to explore the potential of ATO-based materials in the fields of memristive devices, photocatalysis, electrocatalysis, corrosion resistant coatings, and biomedical applications. ,,,,,,,,,,,− In this section, we summarize some notable physiochemical properties and applications of ATOs or their derived materials.…”

“…Subsequent efforts were made to understand the rate controlling step and the movement/migration of metal ions during the anodic oxide growth on Ta. 90,103 For example, B. Verkerk et al 103 investigated the mechanism of tantalum oxide growth utilizing This study revealed no incorporation of Li + , Na + , K + , B, and N in the oxide layer. In addition, the researcher thoroughly investigated the amount of incorporated elements, such as sulfur, chlorine, and fluorine, as well as the depth of incorporation with variations in the concentration of the corresponding anodizing electrolytes.…”

In vitro biocompatibility of anodized titanium with deposited silver nanodendrites

“…Anodic oxidation results in the formation of rough titanium oxide, which improves osseointegration. The oxidation process can be done in standard conditions as well as can be supported by spark-discharge process in the plasma electrolytic oxidation (PEO), done at high voltages [8][9][10]. As the results, formation of different size pores or cavities as well as nanotubes are possible [11][12][13].…”