钛表面处理对增强钛/瓷结合强度的影响

为了提高钛/瓷结合强度,通过不同方法对钛表面进行处理,研究了钛表面处理后钛/瓷界面组织及结合强度。试验结果表明,烤瓷前进行钛表面喷砂处理,对增强钛/瓷结合强度的影响并不显著,但对抑制钛/瓷界面裂纹的扩展起到积极作用;钛表面预氧化处理能够在钛表面形成一层均匀的氧化膜,使参与界面反应的TiO2增多,反应层增厚,但预氧化温度对钛/瓷结合强度有重要影响;钛表面磁控溅射Zr中间层能够抑制钛表面生成过厚氧化层,而中间层厚度对钛/瓷结合强度也有较大影响。

Effect of titanium surface treatment on improving the bonding strength of Ti/porcelain

In order to improve the bonding strength of Ti/porcelain,the microstructure and bonding strength were studied after different methods of Ti surface treatment was applied.Experimental results show that sandblasting on Ti surface prior to sintering did not have a significant impact on improving the bonding strength,but it could restrain the propagation of cracks at Ti/porcelain interface.The pre-oxidation treatment of Ti could form a uniform film of oxide on surface,so the content of TiO2 which was participate in the interfacial reaction was increased,and resulted in the thickening of reaction layer.The temperature of pre-oxidation had a great effect on the bonding strength of Ti/porcelain.Magnetron sputtering Zr middle layer on Ti surface could decrease the thickness of oxide layer effectively,and the thickness of Zr middle layer had a great influence on bonding strength of Ti/porcelain.