摘要
为了探讨钛经微弧氧化处理后,对钛瓷结合强度的影响,将试样分为光滑组和喷砂组,然后随机地抽取两组中的各一半试件进行微弧氧化处理,对各组钛试件表面进行瓷粉烧结。根据ISO9693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和EDX观察与分析。结果表明:钛试样光滑组、粗糙组、微弧氧化光滑组和微弧氧化粗糙组与瓷的结合强度分别是:25.35±2.03,32.18±2.21,37.51±1.90和46.89±4.40MPa;微弧氧化组的钛瓷结合强度与不进行微弧氧化处理组的钛瓷结合强度相比在统计学上有显著差异(P<0.05);粗糙组的钛瓷结合强度大于光滑组(P<0.05),但明显小于微弧氧化组(P<0.01);未进行微弧氧化处理组的钛瓷界面间可见有明显裂隙;而微弧氧化组的钛瓷界面瓷与钛基体结合紧密,无任何气泡、孔隙存在。结论是钛表面微弧氧化处理后可有效提高钛瓷的结合强度,同时表面喷砂处理也可以提高钛瓷的结合强度。
To study the effects of microarc oxidation treatment （MAO） on Ti-porcelain strength, 4 sorts of Ti substrates were prepared using 4 treatment ways. Their surfaces were observed and tested by SEM and EDS, then the substrates were bonded to porcelain to get Ti-porcelain composites. The bonding interfaces between Ti substrate and porcelain were observed by SEM. Bonding strength of the samples were measured by a three-point bending tester according to ISO9693. The experiment results show that the bonding strengths for polished Ti-porcelain sample No.1 sandblasted Ti-porcelain sample No.2, MAO and polished Ti-porcelain sample No.3 and MAO and sandblasted sample No.4 are 25.35 ± 2.03, 32.18 ± 2.21,37.51 ± 1.90 and （46.89±4.40 ）MPa, respectively. There exist visible cracks at the interface between Ti substrate and porcelain for samples No.l and No.2 which were not handled by MAO; while the bonding between Ti substrate and porcelain is compact for samples No.3 and No.4 which were handled by MAO, and no any bubbles and pores exist at the interface between Ti substrate and porcelain. The conclusion is drawn as follows： MAO can improve the bonding strength between Ti substrate and porcelain, and so can the sandblasting treatment.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2008年第3期495-498,共4页
Rare Metal Materials and Engineering
基金
国家自然科学基金(30672347)资助
关键词
微弧氧化
钛
瓷
结合强度
microarc oxidation
titanium： porcelain
bonding strength
作者简介
李健学，男，1976年生，硕士生，第四军医大学口腔医院修复科，陕西西安710032，
联系人：张玉梅，副教授，硕士生导师，电话：029-84776090，E-mail：wqtzym@fmmu．edu．cn
