2002
DOI: 10.2320/matertrans.43.261
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Surface Characterization of Amorphous Zr-Al-(Ni, Cu) Alloys Immersed in Cell-Culture Medium

Abstract: For the evaluation of zirconium-base amorphous alloys as biomaterials, the surface compositions of amorphous Zr-Al-Ni-Cu and Zr-AlCu alloys were characterized using X-ray photoelectron spectroscopy. The alloys were polished, autoclaved, and immersed in Hanks' solution or Eagle's minimum essential medium containing fetal bovine serum, MEM + FBS. Aluminum was enriched in the surface oxide film and the substrate just under the film of the alloys polished in water. After autoclaving, aluminum and copper were enric… Show more

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Cited by 27 publications
(17 citation statements)
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“…Amino acids such as citric acid provide complex with cations and accelerate the dissolution of the certain alloying elements 17) and the dissolution of alloying elements in the surface oxide film seemed to be accelerated in the order of magnitude of chelate formation constant of elements with EDTA (Ethylene diamine tetra acetic acid): 18) on the melt-span alloy in the presence of biomolecules, 2) therefore it cannot be denied that the dissolution of the alloy is enhanced with biomolecules by providing complex in this study. On the other hand, since the adsorbed biomolecules work as a diffusion barrier to dissolved oxygen, growth of surface oxide film may be retarded to form less protective film.…”
Section: Effects Of Amino Acids and Proteinsmentioning
confidence: 99%
See 1 more Smart Citation
“…Amino acids such as citric acid provide complex with cations and accelerate the dissolution of the certain alloying elements 17) and the dissolution of alloying elements in the surface oxide film seemed to be accelerated in the order of magnitude of chelate formation constant of elements with EDTA (Ethylene diamine tetra acetic acid): 18) on the melt-span alloy in the presence of biomolecules, 2) therefore it cannot be denied that the dissolution of the alloy is enhanced with biomolecules by providing complex in this study. On the other hand, since the adsorbed biomolecules work as a diffusion barrier to dissolved oxygen, growth of surface oxide film may be retarded to form less protective film.…”
Section: Effects Of Amino Acids and Proteinsmentioning
confidence: 99%
“…1,2) Effects of chloride ion, phosphate ions, and dissolved oxygen etc. were revealed using the fluids containing only inorganic ions.…”
Section: Introductionmentioning
confidence: 99%
“…High protectiveness and low local corrosion resistance are contradictory properties because a homogeneous and defect-free surface oxide film generally shows both high protectiveness and high local corrosion resistance. This contradictory phenomenon is also shown on the melt spun amorphous Zr 60 M 5 19) Therefore, it is indicated that the preferential dissolution of Al is enhanced on the amorphous structure at a low stable level owing to the high dissolution activity. As a result, the amorphous structure at a low stable level (Bregion) in this study probably results in the formation of a surface oxide film with a small [Al]/[Al+Zr] ratio that shows high protectiveness and low local corrosion resistance.…”
Section: Dscmentioning
confidence: 90%
“…It could be considered that the constituent surface films of this metallic glass in SBF solutions are enriched in Ti and Zr. As a valuable result, Cu content in the surface of the Ti 45 Zr 10 Pd 10 Cu 31 Sn 4 metallic glass is not high enough to cause cytotoxity by biochemical corrosion (12) .…”
Section: Resultsmentioning
confidence: 99%