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Phosphating process for titanium alloy with Zn-Zr phosphate solution

autorzy: Diana Petronela BURDUHOS NERGIS, Costica BEJINARIU, Andrei Victor SANDU, Petrica VIZUREANU, Nicanor CIMPOESU, Dumitru-Doru BURDUHOS-NERGIS

The procedure described in the invention involves phosphating titanium alloys with phosphating solutions based on Zr and Zn to create porous thin coatings that can enhance the biological response of titanium implants by boosting osseointegration and enhancing corrosion and wear resistance. Through a phosphating process that includes grinding, degreasing, pickling, surface activation and phosphating phases, a coating of phosphate based on Zr and Zn is deposited. Also, the phosphating process parameters were changed to produce a homogenous layer that could enhance the titanium alloy's characteristics and lower the likelihood of implant rejection. The invention's applications have the following benefits: it can be applied quickly by immersion without using extra energy; it allows for the formation of layers with high adhesion to the substrate; the formed layers exhibit stability over time; and it enhances osseointegration due to the substrate's increased resistance to corrosion and wear as well as its morphological features that encourage cell adhesion.

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