Studies of Carbon-Surfaced Polymeric, Metallic and Ceramic Biomaterials

摘要

The primary goals of this program have been to determine whether thin carbon films that have physical and chemical properties similar to those of LTI carbon also confer the biochemical properties of LTI carbon to the coated composites, and equally important, to determine if these carbon-surfaced composites possess the necessary engineering properties for use in prosthetic devices. The authors have established that the strain to failure of carbon films on polymeric substrates is on the order of 4 to 5%. Failure of the carbon coating always coincided with the onset of plastic deformation in the substrate. The adhesion of the thin coatings is greater than the bulk strength of the polymer. As a service to other NHLBI contractors, the authors have supplied approximately 400 implant rings during the present reporting period.