葡萄糖酸钠络合剂Ca-P电解液体系对陶瓷膜表面形貌的影响  

Effect of Gluconic Acid Ca-P Electrolyte System on the Surface Morphology of Ceramic Film

作　　者：石茂林[1] 李洪友[1] 刘晓梅[1] 

机构地区：[1]华侨大学机电及自动化学院,福建厦门361021

出　　处：《中国表面工程》2014年第3期57-64,共8页China Surface Engineering

基　　金：福建省自然科学基金(2012J01213)

摘　　要：采用葡萄糖酸钠络合剂Ca-P电解液体系,在纯钛表面微弧氧化制备了生物钙磷陶瓷膜,研究了电解液组分对陶瓷膜表面形貌、孔隙率、孔隙密度、孔径尺寸的影响规律。通过扫描电子显微镜（SEM）、图形处理软件（ImageJx）分析了陶瓷膜表面形貌。结果表明：NaOH浓度对陶瓷膜孔隙率影响极差达17%,NaOH浓度较低时,为单次击穿烧结孔隙结构,NaOH浓度升高,陶瓷膜为反复涂覆烧结而成;改变Ca、P元素电解质浓度能够改善电解液电导率,孔隙率为20%~33.3%,浓度适中时表面呈现火山口状结构;葡萄糖酸钠浓度对于陶瓷膜形貌影响较小,孔隙率大于30%,多呈火山口状孔隙结构。葡萄糖酸钠为络合剂钙磷电解液体系制备的陶瓷膜表面性能与常用络合剂性能相近,具有环保与替代意义。The biological ceramic film on Ti was prepared in the Ca/P electrolyte system of gluconic acid by micro-arc oxidation.The effect of the electrolyte components on surface morphology,pores ratio,pores density and pores size was studied.The surface morphology was analyzed by scanning electron microscopy（SEM）and the graphics processing software（ImageJx）.The results show that the NaOH concentration has the most significant impact,and the range of porosity ratio is 17%.At lower concentration,the surface is once sintering pores structure;at higher concentration,the surface is sintering and film structure.The change of Ca/P element concentration can improve the conductivity,and the porosity is 20%-33.3%.The surface is craterlike structure with an appropriate concentration.The effect of gluconic acid on ceramic film surface is minimal,the porosity is more than 30%,and most of the surface is twice sintering pores structure.The performance of the ceramic film in the gluconic acid system is similar to common complex agent.The gluconic acid system has practical and alternative meaning.

关 键 词：微弧氧化 电解液浓度 葡萄糖酸钠 钙 磷 

分 类 号：TG174.151[金属学及工艺—金属表面处理]