Process for producing a metal body and metal bodies
OwnerHolger Zipprishinventor
Life of this patent
Estimating the term…
Abstract
The invention provides a process for producing a metal body, which leads in a simple and reliable way to formation of a defined surface topography, if desired also combined, in the range from 10 nm to 500 μm on a metal base body or blank which is to have, in particular, nanoscale pores. For this purpose, a pulsating current is applied to a metal base body in an electrolysis bath, with the electrolysis bath comprising salt former ions matched to the material of the metal base body. Furthermore, the invention provides a dental implant having particularly advantageous surface properties, in which a nanostructure is superimposed on a surface microstructure and nitrogen atoms and/or nitrogen compounds are attached and/or included in the region of the surface.
Claims21
A process for producing a metal body with a surface having nanoscopic pores or a nanoscopic structure, comprising:
- applying an alternating current to a metal base body in an electrolysis bath, wherein the electrolysis bath is laced with ions selected from the group consisting of ions from groups V to VII of the periodic table and an element comprising the ions as a component, and wherein the amplitude of the alternating current applied to electrodes of the electrolysis bath is increased in successive time intervals in a step-by-step manner.
A process for surface enlargement, comprising:
- applying an alternating current to a metal body made of a metal selected from the group consisting of titanium, chromium, iron, zirconium, tantalum, niobium and of an alloy with at least one of these metals as the main component, in a liquid electrolyte which contains at least one ion selected from the group consisting of an element of group V to VII of the periodic table or comprising such an element as a component,
- wherein the amplitude of the voltage is increased in successive time intervals in a step-by-step manner.
Dependencies are inferred from the claim text.