PVD-Beschichtungen von Metalloberflaechen zur Verschleissminimierung von Polyaethylen im kuenstlichen Kniegelenk Schlussbericht

The target of the project was the development of abrasion resistant and biocompatible PVD-coatings. Besides the application of hard coatings through a plasma-based PVD-process, the main emphasis of this development was the optimized geometrical construction of the knee implant as well as a material structure with a low interstitial phase appropriate for the used coating technique. Through on optimized heat treatment of this implant material and the use of high purity raw materials for the production of the alloys as well as an implant geometry adapted to the biomechanical demands the adhesion behaviour of the PVD-coatings as well as the abrasion behaviour of the UHMWPE-Tibiaplateaus could be improved. (orig.)SIGLEAvailable from TIB Hannover: DtF QN1(73,8) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Bildung, Wissenschaft, Forschung und Technologie, Bonn (Germany)DEGerman

PVD-Beschichtungen von Metalloberflaechen zur Verschleissminderung von Polyaethylen im kuenstlichen Kniegelenk Abschlussbericht

A significant clinical problem in the use of joint prostheses with polyethylene and metal components is the polyethylene wearout. Modifications of surfaces of titanium alloys with bio-compatible hard material coatings like (Ti, Nb)N, (Ti, Nb)ON, (Ti, Ta)N TaON and Ta_2O_5 are tested as a wear protection for the polyethylene component. A special hard coating design can be achieved by a reactive arc physical vapor deposition technique, using partitioned targets. The coatings were physically characterized by SNMS, EDX, SEM, XRD, scratch-tests, corrosion resistance and contact angle measurements. Biological tests included investigations concerning zyto-toxic behavior, vitality of cells and the Northern-ELISA method. Especially (Ti, Nb)ON and Ta_2O_5 films qualified for the coating of joint prostheses because of their high corrosion resistance, their high adhesion to the substrates and the ability of reproducible industrial production. (orig.)SIGLEAvailable from TIB Hannover: F99B901+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Bildung, Wissenschaft, Forschung und Technologie, Bonn (Germany)DEGerman

Optimiertes Einwachsverhalten bei isoelastischen Titanimplantaten durch massgeschneiderte, elektrophoretisch hergestellte Hydroxylapatit-(HAP)-Schichten Abschlussbericht

Available from TIB Hannover: F01B1173+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEBundesministerium fuer Bildung, Wissenschaft, Forschung und Technologie, Bonn (Germany)DEGerman