Influence of pressure-assisted polymerization on the microstructure and strength of polymer-infiltrated ceramics
Influence of pressure-assisted polymerization on the microstructure and strength of polymer-infiltrated ceramics
复制标题
压力辅助聚合对聚合物渗透陶瓷微观结构和强度的影响
DOI：
10.1007/s10853-012-7106-7
复制
发表时间：
2012
影响因子：
4.5
通讯作者：
Kailer A
中科院分区：
文献类型：
--
作者：
Steier V;Koplin C;Kailer A
一种制造聚合物渗透陶瓷（PIC）的方法是用液体单体预渗透多孔陶瓷，随后将有机组分分散在陶瓷结构内。聚合过程中的体积减小导致孔（缺陷）的形成，这对PIC的机械性能具有不利影响。为了避免缺陷的产生，开发了在聚合期间使用压力的新聚合方法。为了研究压力和加热速率对强度和显微组织的影响，这两个参数都是变化的。采用双轴试验研究了这两个参数对PIC强度的影响。通过显微镜研究了对显微组织的影响。用SEVNB方法测定了所制备的PICs的断裂韧性和R曲线行为。工艺参数对粉末冶金复合材料的强度和显微组织有很大的影响。在聚合过程中使用升高的压力可以制造具有改进的强度的无缺陷的PIC。正如预期的那样，一个独特的R-曲线行为和增强的断裂韧性相对于使用传统的方法制造的复合材料被发现。
A method of manufacturing polymer-infiltrated ceramics (PICs) is to pre-infiltrate a porous ceramic with a liquid monomer and subsequently polymerize the organic component inside the ceramic structure. The volume reduction during polymerization leads to the formation of pores (defects), which has a detrimental effect on the mechanical properties of PICs. To avoid the generation of defects, a new polymerization method that uses pressure during polymerization was developed. To investigate the influences of pressure and heating rate on strength and microstructure, both parameters were varied. The influences of both parameters on the strength of PICs were studied using a biaxial test. The influence on the microstructure was investigated through microscopy. Fracture toughness and R-curve behavior of the manufactured PICs were determined with the SEVNB method. The process parameters have a strong influence on strength and microstructure of PICs. Defect-free PICs with improved strength could be manufactured using elevated pressure during polymerization. As expected, a distinct R-curve behavior and enhanced fracture toughness relative to composites manufactured using conventional methods was found. The developed manufacturing method leads to defectless PICs with increased mechanic behaviors.
登录
查看更多内容
微裂材料 R 曲线行为的计算机模拟
DOI：
--
发表时间：
1987
期刊：
影响因子：
--
作者：
Gregory D. Bowling;K. Faber;R. Hoagland
通讯作者：
R. Hoagland
含有球形填料颗粒的牙科树脂复合材料的微断裂机制
DOI：
--
发表时间：
1994
期刊：
Journal of dentistry research
影响因子：
--
作者：
K. Kim;J. Park;Y. Imai;T. Kishi
通讯作者：
T. Kishi
在界面处具有与硅烷离聚物键合的复合材料
DOI：
--
发表时间：
1989
期刊：
影响因子：
--
作者：
E. Plueddemann
通讯作者：
E. Plueddemann
影响因子：
5
作者：
Lovell, LG;Lu, H;Bowman, CN
通讯作者：
Bowman, CN
填料含量和尺寸对微波固化复合树脂性能的影响
DOI：
--
发表时间：
1999
期刊：
Journal of materials science. Materials in medicine
影响因子：
--
作者：
H. Urabe;Y. Nomura;K. Shirai;M. Yoshioka;H. Shintani
通讯作者：
H. Shintani