Method and device of enhancing diffusibility of metallic surfaces and applications thereof
OwnerJian Luinventor
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Abstract
A method for increasing diffusibility of metallic surfaces and its applications in surface treatment of metallic implants, which combines a mechanic means and a chemical means, whereby the mechanic means increases the diffusibility of the surface while the chemical means forms a chemically modified surface layer for improved properties suitable for particular application of the metallic materials, especially in the bio-medical areas. This surface treatment can increase the hardness and corrosion resistance of stainless steel and reduces Ni release from implants made from NiTi wires.
Claims19
A method of enhancing diffusibility of a metallic surface, comprising a step of generating crystalline surface structure by surface mechanical attrition treatment.
A device for generating nanostructures in a given thickness on metallic implants comprises a working chamber that can be divided into multiple rooms, means for setting in motion a given quantity of perfectly spherical balls of given dimension at a given speed in each room for a given duration, means for reusing the balls continuously in each room, and means for mounting and rotating the implants at a given speed to obtain variable angles of incidence at the same impact point, so that the impact points as a group cover the entire surface of the implant.
Dependencies are inferred from the claim text.