镁表面钛氧化物薄膜的制备及表征  

Preparation and characterization of titanium oxide film coating on magnesium-based alloy

作　　者：尹长浩[1] 王利青[1] 刘广[1] 张浩[1] 刘亚云[1] 

机构地区：[1]南京工业大学材料科学与工程学院,江苏南京210009

出　　处：《无机盐工业》2010年第7期34-36,48,共4页Inorganic Chemicals Industry

摘　　要：以钛酸乙酯Ti(C2H5O)4溶液为前驱体,采用喷雾热解沉积法(SHD)在镁基合金表面沉积钛氧化物薄膜。采用模拟体液(SBF)对薄膜进行耐腐蚀性能研究;通过X射线衍射和扫描电镜、能谱仪对进行SBF腐蚀前后薄膜的元素组成、晶体形貌和结构进行表征。结果表明:采用喷雾热解沉积法可在镁基体表面制备出无定形钛氧薄膜,该薄膜具有高活性,能够快速诱导羟基磷灰石(HAP)在其表面沉积,并能显著提高合金基体耐腐蚀性能。Titanium oxide film was deposited on the surface of magnesium-based alloy by spray hydrolysis deposition（SHD） method with tetraethyl titanate [Ti（C2H5O）4] solution as precursor.Performace of corrosion resistance of the film was studied by adopting simulated body fluid（SBF）;presence of elements,morphology,and structure of the film before and after soaking in SBF were characterized by XRD,SEM,and EDS.Results showed that the amorphous Ti-O film could be prepared on the surface of magnesium-based alloy by SHD method,which film had a high activity,can rapidly induce the hydroxyapatite（HAP） to deposit on its surface and can improve corrosion resistance of magnesium alloy significantly at the same time.

关 键 词：镁合金 二氧化钛 薄膜 耐腐蚀 热诱导水解 

分 类 号：TQ134.11[化学工程—无机化工]