i shape memory alloy by TiC/Ti ing PIIID

i a pati complex-shaped three-dimensional biomedical devices [1]. NiTi corrosion and wear resistances, high hardness and good biocompatibility, are often used tomodify the surfaces of artificial evacuated to a pressure of 8×10−4 Pa and was then purged 201 (2007) 6857–6860 www.elsevier.com/locate/surfcoatdevices [5]. The present study investigated TiC coating on Ti–alloys have beenwidely used as constructionmaterials for a range of surgical implants and medical devices owing to their novel shape memory and superelastic properties. These alloys are generally considered to have excellent corrosion resistance and good biocompatibility [2]. However, their long-term biocompat-ibility has not been fully certified. This has given rise to some concerns for their high Ni content. To overcome this problem, various techniques have been used to improve the biocompatible properties ofNiTi alloys, including laser treatment and plasma ion implantation [3,4]. Ceramic coatings, with their excellent with Ar gas. The specimen was first sputter cleaned under a biasobserved. At higher normal loads for the scratching test, the film delaminated from the substrate at the margins of the substrate. Platelet adhesion tests demonstrate that the hemocompatibility of the coated sample is improved