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评价了应用激光快速成形(LRF)技术制作纯钛与Noritake Ti-22钛瓷的结合性能。利用商用纯钛粉末、激光快速成形系统和优化的成形工艺参数,制作纯钛试样,测量了其热膨胀系数(CTE),根据ISO9693标准采用三点弯曲方法对钛瓷结合强度进行测试,并对瓷剥脱后的钛表面进行扫描电镜(SEM)和能潜(EDS)分析。结果表明激光快速成形纯钛的热膨胀系数与铸造纯钛无统计学差异,且与Noritakc Ti-22钛瓷匹配。激光快速成形纯钛与Ti22钛瓷的分离类型为混合断裂,包括内聚型和粘附型。钛瓷结合强度大于ISO9693标准所要求的基本值(25MPa)。激光快速成形技术有望成为加工烤瓷熔附金属修复体的新技术。
The bonding performance of pure titanium with Noritake Ti-22 titanium ceramic was evaluated by laser rapid prototyping (LRF). Pure titanium samples were prepared by commercial pure titanium powder, laser rapid prototyping system and optimized forming process parameters. Their CTEs were measured. The three-point bending method was used to test the bonding strength of titanium-ceramic according to ISO9693 standard. The surface of the titanium after peeling off was subjected to scanning electron microscopy (SEM) and energy potential (EDS) analysis. The results show that the thermal expansion coefficient of laser rapid prototyping pure titanium is not statistically different from that of cast pure titanium, and it matches with Noritakc Ti-22 titanium porcelain. Laser rapid prototyping Titanium titanium and Ti22 separation of the type of mixed fracture, including cohesion and adhesion type. Titanium porcelain bonding strength is greater than the standard value required by the ISO9693 standard (25MPa). Laser rapid prototyping technology is expected to become a new technology for processing porcelain fused metal restorations.