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评价 Co-Cr 陶系统中的柔性阻力:传统造与3D 打印相比-试点研究
Alexandra Elena Biculescu1,2, Anca Iuliana Popescu2, Tudor-Petru Ionescu2
1Doctoral School of Dental Medicine, Titu Maiorescu University, 189 Calea Văcărești, 040051 Bucharest, Romania.
传统的造和较大的喷砂颗粒 (250微米) 在Co-Cr金属陶系统中比3D打印 (SLM) 提供了更好的曲性能. 用造样品和250微米颗粒实现最佳粘合,而SLM可能需要进一步的表面处理.
科学领域:
- 材料科学 材料科学 材料科学
- 生物材料工程 生物材料工程
- 牙科材料 牙科材料
背景情况:
- 金属陶接口的机械和粘合性完整性对于牙科修复的寿命至关重要.
- 增材制造,特别是选择性激光炼 (SLM),为制造Co-Cr框架提供了传统造的替代方案,需要进行比较性能分析.
研究的目的:
- 调查制造方法 (造与通过SLM进行3D打印) 和粉砂吹颗粒大小 (125微米与250微米) 对Co-Cr金属陶系统曲性能的影响.
- 为生成与陶结合的传统造和增材制造的Co-Cr基板的结合强度进行比较的假设形成数据.
主要方法:
- 使用常规造和SLM技术制造了Co-Cr合金样品.
- 样本被用125微米或250微米的颗粒进行沙吹.
- 根据ISO 9693:2012标准应用陶,样品经过三点曲试验以确定陶断裂移位力.
主要成果:
- 传统造样品的排位强度明显高于SLM打印的样品.
- 在用250μm颗粒 (12.48 ± 0.91 N) 喷砂的造样本中观察到最高的性能.
- 较大的喷砂颗粒 (250微米) 提高了两种制造方法的结合强度;使用125微米颗粒的SLM产生了最低的强度 (7.24 ± 0.65N).
结论:
- 制造方法和喷砂颗粒大小都对Co-Cr金属陶系统的曲性能和陶粘合力产生重大影响.
- 传统的造使用250微米的喷砂喷射提供了优质的陶粘合.
- 用SLM制造的框架可能会受益于额外的表面处理,例如粘合剂或化学氧化,以改善金属陶粘附.
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