钛材表面烤瓷的瓷金属界面研究

目的：研究瓷与钛材界面形态学特征和元素扩散情况。方法：在钛材面上烧烤低温瓷Ｃｅｒａｔｉｎ，用扫描电镜和金相显微镜观察钛材和瓷界面区域及材料组织结构。用能谱分析仪观测界面区元素扩散情况。用ＰＷ１７００型自动化粉末衍射仪测定钛板作热处理后表面新生的氧化物。结果：显微镜下，在钛材表面该瓷有良好的浸润性和扩散作用，对钛材附着紧密，ＴＣ４面向界面区出现结构变化层。能谱分析发现界面区有钛、铝、硅元素扩散现象。Ｘ线衍射检查揭示ＴＡ２、ＴＣ４表面都有ＴｉＯ２形成。结论：Ｃｅｒｃｔｉｎ和钛材热力学性能匹配，其结合机理包括机械性结合和化学性结合。

A study on the interface between titanium materials and porcelains

Objective: To observe the topography of the interfaces between porcelain and titanium materials and to detect the ionic diffusion in the interface area. Methods: The low temperature porcelain Ceratin, produced by the authors was fused to the surfaces of titanium. The topography of the interfaces between titanium materials and porcelain, and the structure of experimental materials were observed with SEM and metalloscope. The state of ionic diffusion in the interface area were investigated with energy dispersive analysis of Xray. The titanium oxides formed on the surface of titanium materials were detected with powder automatic diffracter. Results: Excellent permeation and diffusion of Ceratin were observed on the surfaces of TA2 and TC4. A layer with changed structure was found in TC4 facing interface. The diffusions of ions of titanium, aluminium and silicon were discovered in the interface area. Titanium oxide was found on the surfaces of TA2 and TC4. Conclusion: The low fusing procelain Ceratin mat s thermodynamically with TA2 and TC4, and excellent bond can be produced in the interface between Ceratin and titanium materials. The bonding mechanism may involve mechanical bond and chemical bond.