立体光固化成型结合微波烧结制备牙科 3Y-TZP 陶瓷的力学性能及低温降解研究。
Investigation of mechanical properties and low-temperature degradation of dental 3Y-TZP ceramics fabricated by stereolithography in combination with microwave sintering.
机构信息
Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment and Technology, School of Mechanical Engineering, Jiangnan University, Wuxi, 214122, Jiangsu, China; Institute of Advanced Technology, Jiangnan University, Wuxi, 214122, Jiangsu, China.
Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment and Technology, School of Mechanical Engineering, Jiangnan University, Wuxi, 214122, Jiangsu, China; Institute of Advanced Technology, Jiangnan University, Wuxi, 214122, Jiangsu, China.
出版信息
J Mech Behav Biomed Mater. 2023 Dec;148:106211. doi: 10.1016/j.jmbbm.2023.106211. Epub 2023 Oct 26.
The purpose of this study was to obtain dental ceramic materials with excellent mechanical properties and high resistance to low temperature degradation (LTD) via stereolithography (SLA) in combination with microwave sintering (MWS). The results have shown that the unaged MWS-1425 °C 3Y-TZP ceramics with uniform microstructure have high density up to 99.04% and excellent mechanical properties (Vickers hardness 14.07 GPa, fracture toughness 4.32 MPa m, flexural strength 947.87 MPa). After 50 h of LTD, the m-phase content of MWS 3Y-TZP ceramics accounts for only 10.3%. In addition, the surface roughness increases by only 1.3 nm, the degraded depth is less than 5 μm, and the flexural strength exceeds 900 MPa. This exhibits the high resistance to LTD and excellent mechanical properties of dental 3Y-TZP ceramics can be obtained.
本研究旨在通过立体光固化（SLA）结合微波烧结（MWS）获得具有优异力学性能和抗低温降解（LTD）性能的牙科陶瓷材料。结果表明，未经时效处理的 MWS-1425°C 3Y-TZP 陶瓷具有均匀的微观结构，密度高达 99.04%，力学性能优异（维氏硬度 14.07GPa，断裂韧性 4.32MPa·m1/2，弯曲强度 947.87MPa）。经过 50h 的 LTD 后，MWS 3Y-TZP 陶瓷的 m 相含量仅占 10.3%。此外，表面粗糙度仅增加了 1.3nm，降解深度小于 5μm，弯曲强度超过 900MPa。这表明牙科 3Y-TZP 陶瓷具有较高的抗 LTD 性能和优异的力学性能。
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