Mechanical tests, wear simulation and wear particle analysis of carbon-based nanomultilayer coatings on Ti₆Al₄V alloys as hip prostheses.

ABSTRACT: Carbon-based nanomultilayer coatings were deposited on medical-grade Ti₆Al₄V alloy using a magnetron sputtering technique under a graded bias voltage. The mechanical properties of the nanomultilayer coatings were investigated by nanoindentation, Rockwell and scratch tests as well as a ball-on-disk tribometer. The biological properties related to the immunological response of the coatings were investigated by wear simulation and wear particles analysis. Wear simulation was done according to ISO 14242, wear particles were analysed according to ISO 17853, and then compared with CoCr femoral heads. The results revealed that the carbon-based nanomultilayer coatings showed a multilayer structure, with a hardness of ∼20 GPa, an elastic modulus of ∼175 GPa, an adhesion higher

SUBMITTER: Li J 

PROVIDER: S-EPMC9078386 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature