Abstract: The active implant for use in medicine, such as for tooth implants or endoprosthesis For positions influencing the growth mechanisms of the bone and which remain in place for a long time. The active implant comprises a base and flexible structures therein provided with an oxide which contains growth stimulators and has a stable p-n junction.
Type:
Grant
Filed:
November 18, 1986
Date of Patent:
July 16, 1991
Assignee:
Technische Hochschule Karl-Marx-Stadt
Inventors:
Peter Kurze, Waldemar Krysmann, Wolfram Knoefler, Hans-Ludwig Graf, Wolfgang Bethmann, Horst Hampel
Abstract: Hard coatings for mechanically and corrosively stressed elements are applicable to arbitrarily chosen substrate materials. The mentioned elements can be tools, cutting inserts or bearings. Further, applications are possible in electronics and optics and also for decorative purposes. Hard coatings on the basis of carbon and boron nitride, produced by known techniques, are obtained which can be used in a wide field of application, exhibiting, besides a high hardness, maximum adhesion and good protection against wear and corrosion at high temperatures. The C and B/N coatings consist of amorphous network structures with short range orders similar to that of the hexagonal crystalline phases of carbon and boron nitride, have hydrogen concentrations between 5 atom-% and 50 atom-% and additional components consisting of metals and/or boron and or silicon and/or noble gases in the concentration range between 1 atom-% and 85 atom-%.
Type:
Grant
Filed:
October 6, 1986
Date of Patent:
March 15, 1988
Assignee:
Technische Hochschule Karl-Marx-Stadt
Inventors:
Christian Weissmantel, Bernd Rau, Klaus Bewilogua, Dietmar Roth, Bernd Rother