Surface characteristics of Niobium metal after anodizing and immersion in simulated body fluid

doi:10.3877/cma.j.issn.1674-1366.2010.05.008

Abstract

Abstract:

Objective

This study examined the surface characteristics of the pure niobium anodized in the DL-α-glycerophosphate （DL-α-GP） and calcium acetate （CA）.

Methods

All specimens were immersed in the SBF （simulated body fluid） for 30 days.The surface of specimen was characterized by scanning electron microscope （SEM） and X-ray photoemission spectroscopy （XPS） test.

Results

Under the SEM， overlapping micro-holes were observed to emerged on the surface of the anodized specimens， while for the specimens serially treated by anodization， simulated body fluid immersion and 300℃ 2-h hydrothermal treatment by highpressure steam， hydroxyapatite micro-crystals were observed to precipitated on the surface and the size of the micro-holes decreased gradually.In the XPS pattern， O， Nb， C， Ca and P peaks were found.

Conclusion

Nb can be used as a bioactive material after the treatment of anodizing and hydrothermal process.

Key words: Hydrothermal treatment, Niobium, Simulated body fluid, Anodizing, X-ray photoelectron spectroscopy

Guang-chun JIN, Il-song PARK, Sook-jeong LEE, Dat-hee WON, Min-ho LEE. Surface characteristics of Niobium metal after anodizing and immersion in simulated body fluid[J]. Chinese Journal of Stomatological Research(Electronic Edition), 2010, 4(05): 477-482.

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