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Corrosion behavior of tantalum-coated cobalt-chromium modular necks compared to titanium modular necks in a simulator test.

Corrosion behavior of tantalum-coated cobalt-chromium modular necks compared to titanium modular necks in a simulator test.

The Journal of arthroplasty (2013-10-09)

Ulrich Dorn, Daniel Neumann, Mario Frank

要旨

This study compared the corrosion behavior of tantalum-coated cobalt-chromium modular necks with that of titanium alloy modular necks at their junction to titanium-alloy femoral stem. Tests were performed in a dry assembly and two wet assemblies, one contaminated with calf serum and the other contaminated with calf serum and bone particles. Whereas the titanium modular neck tested in the dry assembly showed no signs of corrosion, the titanium modular necks tested in both wet assemblies showed marked depositions and corrosive attacks. By contrast, the tantalum-coated cobalt-chromium modular necks showed no traces of corrosion or chemical attack in any of the three assemblies. This study confirms the protective effect of tantalum coating the taper region of cobalt-chromium modular neck components, suggesting that the use of tantalum may reduce the risk of implant failure due to corrosion.

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製品内容

Sigma-Aldrich

タンタル, powder, −325 mesh, 99.9% trace metals basis

Sigma-Aldrich

タンタル, powder, 99.99% trace metals basis

Sigma-Aldrich

タンタル, foil, thickness 0.025 mm, ≥99.9% trace metals basis

Sigma-Aldrich

タンタル, foil, thickness 0.25 mm, ≥99.9% trace metals basis

Sigma-Aldrich

タンタル, foil, thickness 0.05 mm, ≥99.9% trace metals basis

Sigma-Aldrich

タンタル, powder, 60-100 mesh, 99.9%

Sigma-Aldrich

タンタル, wire, diam. 1.0 mm, ≥99.9% trace metals basis

タンタル, foil, 50x50mm, thickness 0.5mm, annealed, 99.9%

タンタル, foil, 100x100mm, thickness 1.0mm, annealed, 99.9%

Sigma-Aldrich

タンタル, foil, thickness 0.5 mm, ≥99.9% trace metals basis

タンタル, foil, 100x100mm, thickness 0.25mm, annealed, 99.9%

タンタル, foil, light tested, 150x150mm, thickness 0.05mm, annealed, 99.9%

Sigma-Aldrich

タンタル, foil, thickness 1.0 mm, ≥99.9% trace metals basis

タンタル, rod, 100mm, diameter 1.0mm, 99.9%

タンタル, mesh, 100x100mm, nominal aperture 0.43mm, wire diameter 0.075mm, 50x50 wires/inch, open area 72%, plain weave mesh

タンタル, pellets, 50g, max. size 10mm, 99.9%

タンタル, foil, 100x100mm, thickness 0.100mm, annealed, 99.9%

タンタル, foil, 100x100mm, thickness 0.125mm, annealed, 99.9%

タンタル, mesh, 40x40mm, nominal aperture 0.43mm, wire diameter 0.075mm, 50x50 wires/inch, open area 72%, plain weave mesh

タンタル, sphere, 100pcs, diameter 1.0mm, precision sphere grade, 99.9%

タンタル, tube, 100mm, outside diameter 7.0mm, inside diameter 6.7mm, wall thickness 0.15mm, as drawn, 99.9%

タンタル, foil, 50x50mm, thickness 6.0mm, 99.9%

タンタル, foil, light tested, 100x100mm, thickness 0.025mm, as rolled, 99.9%

タンタル, wire, straight, 100mm, diameter 0.5mm, annealed, 99.9%

タンタル, rod, 100mm, diameter 3.0mm, annealed, 99.9%

タンタル, rod, 200mm, diameter 1.0mm, 99.9%

タンタル, foil, 150x150mm, thickness 0.100mm, annealed, 99.9%

タンタル, wire reel, 1m, diameter 0.8mm, annealed, 99.9%

タンタル, foil, light tested, 100x100mm, thickness 0.015mm, 99.9%

タンタル, foil, light tested, 100x100mm, thickness 0.03mm, as rolled, 99.9%