铬铝钛氮复合涂层对钛瓷结合强度的影响

目的 探讨用磁控溅射涂层作为钛与瓷间的中间层，增强钛／瓷结合强度的可行性。方法 对钛试件表面采用4种不同方法（磨光、磨光后磁控溅射CrTiA1N梯度涂层、喷砂、喷砂后磁控溅射CrTiA1N复合涂层）处理后，测试钛试件表面硬度及涂层厚度，对表面进行Duceratin瓷粉烧结。根据ISO 9693标准，对钛／瓷间的三点弯曲结合强度进行测试，并对钛／瓷结合界面和瓷剥脱面进行SEM／EDS观察与分析。结果 磨光组和喷砂组涂层处理厚度一致．涂层处理可使钛表面硬度显著提高；磨光涂层组钛／Duceratin瓷结合强度显著大于磨光空白组（P〈0．01），喷砂涂层组钛／瓷结合强度和喷砂空白组无统计学差异（P〉0．05）。喷砂空白组、喷砂涂层组钛／瓷结合强度显著大于磨光涂层组（P〈0．05）。磨光空白组钛瓷界面可见连续且较宽的裂隙；磨光涂层组可见钛瓷结合较好，界面散在不连续的点块状裂隙；喷砂空白组钛瓷界面结合较好，无明显裂隙；喷砂涂层组钛瓷结合良好，钛表面凸凹不平，与瓷相互嵌合。结论 钛表面磁控溅射CrTiAlN梯度涂层在光滑钛表面可有效地提高钛／瓷结合强度，磁控溅射涂层是一种有前景的钛瓷界面中间层。

Cr-Ti-Al-N complex coating on titanium to strengthen Ti/porcelain bonding

Objective To study the feasibility of magnetron sputtering Cr-Ti-Al-N complex coating as an interlayer on titanium to enhance the titanium-ceramic binding strength. Methods With a three-point bending test according to ISO 9693, the binding strength of Duceratin (Degussa) to titanium substrate prepared with 4 different surface treatments (polishing, polishing and megnetron sputtering Cr, Ti, Al, and N complex coating, sandblasting, sandblasting and coating) was evaluated. Ti/porcelain interface and fractured Ti surface were examined using scanning electron microscopy with energy-dispersive spectrometry (EDS). Results The binding strength of polished and coated titanium/Duceratin was significantly higher than polished titanium group (P<0.05). The binding strength of sandblasted and coated titanium/Duceratin did not differ significantly from that of sandblasted titanium group (P>0.05), and the strength in the two sandblasted titanium groups was significantly higher than that in polished and coated titanium group (P<0.05). Conclusion Megnetron sputtering Cr-Ti-Al-N complex on polished titanium can increase the titanium/porcelain binding strength. Megnetron sputtering coating is a promising Ti/porcelain interlayer.