Biomedical Application and Preparation of Gradient TiZrN and TiZr-amorphous Carbon Coatings

• Main Authors: Jia-Xu Liu, 劉家旭
• Other Authors: Yin-Yu Chang
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/7z4aca

碩士 === 國立虎尾科技大學 === 機械與電腦輔助工程系碩士班 === 102 === Titanium and titanium alloys have been used as artificial joints and implants in clinic of orthopedic and dental because of their good properties of biocompatibility and mechanical performance. Recently, surface modification technology has been adopted to improve adhesion and proliferation of cells on implant surface, and a number of studies have confirmed amorphous carbon films can improve biocompatibilities and mechanical properties of titanium. In this study, pure titanium and zirconium targets were used to deposit TiZrN、TiZrCN、TiZr-amorphous Carbon coatings with different chemical contents on titanium substrates using a cathodic arc evaporation system. Staphylococcus aureus (S. a)、Actinobacillus actinomycetemocomitans (A.a ) antibacterial analyses and human skin fibroblast(SKF) biocompatibility of the deposited coatings were conducted. Characterize the composition of coatings was measured by energy dispersive spectrometer(EDS). The crystalline structures and bonding states of coatings were analyzed by X-ray diffraction(XRD), X-ray photoelectron spectroscope(XPS), field emission scanning electron microscope,(FE-SEM),transmission electron microscope(TEM). A surface profilometer was used to measure the surface roughness of the coatings. Potential resistance tests were used to measure the corrosion resistance. In vitro MTT analyses were used for cell activity identification. SKF cell adhesion morphology was also observed by FE-SEM. The results show that the deposited TiZrCN coatings are hydrophilic because of lower contact angles. These TiZrCN coated Ti samples have the best antibacterial performance and SKF compatibility, and they are suitable for biomedical applications.