生物玻璃涂层性能的研究  

Investigation of the Properties of the BG Coatings

作　　者：刘守华[1,2] 周廉[1,2] 罗宏杰[1] 牛金龙[2] 

机构地区：[1]陕西科技大学材料科学与工程学院,咸阳712081 [2]西北有色金属研究院,西安710016

出　　处：《材料导报》2005年第F05期328-331,共4页Materials Reports

摘　　要：本实验所用涂层为磷硅酸盐玻璃系统，涂层以Sol-gel工艺制得。对该工艺制得的涂层于不同温度（700℃、800℃、900℃）下烧成后的各项性能进行比较，对涂层断面进行分析，以确定不同烧成温度下涂层-基体的界面状态。结果表明800℃烧成的涂层具有最好的综合性能：晶型简单；表面虽有裂纹存在，但基体并未裸露，实现了有效涂层的目的；层间扩散明显，涂层．基体界面处有良好过渡；与基体的结合强度高（2层为10．50MPa，4层为7．11MPa）；在模拟体液（SBF）中浸泡30天后表面有大量羟基磷灰石（HA）生成，表明其具有良好的生物活性。In previous work, a bioglass （BG） coating which belongs to phosphoric silicate was deposited by sol-gel technology. Hereon the samples sintered at different temperature（700% ,800℃ and 900℃ ） were characterized respectively. Noted that we studied the samples＇ cross sections to determine the structure and composition of the coating-substrate interface. The result suggests that the coatings sintered at 800℃ present optimal integrated properties：they have clear crystallinity; they cover the substrate effectively despite the existing of the cracks ; there are obvious component gradient at the coatings-substrate interface indicating the elements diffused between layers during the sintering; the bonding strength is high（ 10. 50MPa when deposited twice,7, llMPa when deposited four times） ; abundant HA aggregate on the surfaces of the samples after immersed in SBF for 30d, from this we can roughly predict that they have excellent bioactivity.

关 键 词：溶胶-镶胶法 生物玻璃涂层 断面分析 

分 类 号：TQ171.74[化学工程—玻璃工业] TG174.442[化学工程—硅酸盐工业]