Authors:
Wolfgang Limberg (Helmholtz-Zentrum Hereon, Germany)
Vasil M. Garamus (Helmholtz-Zentrum Hereon, Germany)
Eshwara Nidadavolu (Helmholtz-Zentrum Hereon, Germany)
Thomas Ebel (Helmholtz-Zentrum Hereon, Germany)
Berit Zeller-Plumhoff (Helmholtz-Zentrum Hereon, Germany)
Abstract:
Partly degradable implants consisting of a titanium and a magnesium part allow for novel therapies in medical treatment of bone fractures. In this study, as test specimens MIM-produced titanium tensile test specimens were coated around the gauge length with magnesium MIM feedstock via injection moulding. The magnesium coating was then removed by two different ways: At some specimens mechanically by cutting and grinding and at the other specimens chemically by degradation in 0.9 wt.% NaCl solution.The tensile test properties of the permanent titanium component before and after the removing of the temporary magnesium part were evaluated at room temperature. Hydrogen loading of the titanium parts after chemical degradation was observed. This increase of Hydrogen content of more than 2000 µg|g led to massive embrittlement. Plastic elongation decreased from over 12% to below the detection limit and tensile strength decreased from more than 800 down to 500 MPa.
DOI:
https://doi.org/10.59499/EP256764931
