欢迎关注414lab
Stereolithographic Ceramic Manufacturing of High StrengthBioactiveGlass
发表状态：
The American Ceramic Society，2015
研究团队：
Institute of Materials Science and -Technology, Christian DopplerLaboratory ‘Photopolymers in Digital and Restorative Dentistry’, Vienna University of Technology,
研究内容：
在这项研究中，作者使用立体光刻技术将45S5生物活性玻璃打印成型，所获得的部件具有高密度（约2.7g / cm 3）和高强度，以及非常均匀的微观结构。由于缺陷数量少且尺寸小，实现了124MPa的高双轴弯曲强度。Weibull modulus为8.6，特征强度为131MPa。
Abstract：
Bioactive glasses and glass ceramics like the 45S5 formulation havebeen studied toward biocompatibility and biodegradability for years.Nevertheless, clinical applications as bone substitute or scaffold material arehighly limited because of the often poor mechanical behavior of bioactiveglasses. In this study, we are able to provide a new production alternative for45S5 bioactive glass structures resulting in parts with high density andstrength. Using the stereolithographic ceramic manufacturing (SLCM) process, itis possible to additively produce solid bulk glass ceramics as well as delicatescaffold structures. Recent developments in SLCM slurry preparation togetherwith an appropriate selection of raw materials led to 3D parts with a veryhomogeneous microstructure and a density of about 2.7 g/cm³. Due to the lownumber and small size of defects, a high biaxial bending strength of 124 MPawas achieved. Weibull distribution also underlines good process control showinga Weibull modulus of 8.6 and a characteristic strength of 131 MPa for thesamples tested here. By reaching bending strength values of natural cortical bone,bioactive glasses processed with SLCM could eventually advance to be aninteresting bone substitute material even in loadbearing applications, valuingthe huge efforts undertaken to understand their bioactive behavior.