摘要
为了改善钛基材料的生物活性,通过微弧氧化法在钛基表面构建了TiO_2氧化层,该氧化层呈蜂窝状的介孔结构分布。考察了电解液和电流密度对所形成介孔结构的影响,并评价了介孔孔径对细胞黏附的影响。结果显示,硝酸根离子在形成介孔结构的氧化过程中发挥着重要作用。随着电流密度的增大,氧化层的介孔尺寸逐渐增大,表面黏附的细胞数量呈先增加后减少的趋势。介孔尺寸为23 nm的表面结构有利于成骨细胞的黏附。
In order to improve the bioactivity of Ti-based materials,TiO2 oxidation layer on Ti matrix surface was built by micro-arc oxidation.The oxidation layer was in the distribution of mesoporous structure with cellular.The influence of electrolyte and current density on the formed mesoporous were investigated.The influence of mesoporous diameter on the osteoblast adhesion was evaluated.The results show that the nitrate(NO3-)plays significant role in the formation of mesoporous structure during the oxidation.With the increase of current density,the size of the mesoporous of the oxidation layer increases gradually,the number of the attached cells on the surface increases first and then decreases.The surface structure with the mesoporous diameter of 23 nm is favorable for the adhesion of osteoblast.
作者
杨晓宁
黄晓波
于翰武
张孟
YANG Xiaoning;HUANG Xiaobo;YU Hanwu;ZHANG Meng(Research Institute of Surface Engineering,Taiyuan University of Technology,Taiyuan 030024,China)
出处
《热加工工艺》
北大核心
2019年第2期148-151,共4页
Hot Working Technology
基金
山西高等教育机构科学技术创新项目(201417)
关键词
微弧氧化
二氧化钛
介孔结构
细胞黏附
micro-arc oxidation
Ti O2
mesoporous structure
cell adhesion
