...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Materials & design >Mechanical properties and microstructure of 3D orthogonal quartz fiber reinforced silica composites fabricated by silicasol-infiltration-sintering
【24h】

Mechanical properties and microstructure of 3D orthogonal quartz fiber reinforced silica composites fabricated by silicasol-infiltration-sintering

机译：硅溶胶-浸渗-烧结法制备3D正交石英纤维增强二氧化硅复合材料的力学性能和微观结构

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

3D orthogonal quartz fiber reinforced silica composites were fabricated by silicasol-infiltration-sintering method at a low temperature of 450 ℃, and the mechanical properties and microstructure of the composites were investigated. The density of the composites was 1.71 g/cm~3, the average values of flexure strength and shear strength of the composites were 29.4 MPa and 14.8 MPa at room temperature, respectively. Both of the failures under flexural loading and shear loading were not catastrophic. Compared with α-quartz and α-cristobalite, the fracture toughness of 3D orthogonal quartz fiber reinforced silica composites has been enhanced by a wide margin. The damage features of the composites are identified, using digital camera and scanning electron microscopy. There was a good state without serious degradation of quartz fibers during the preparation. The bonding between the matrix and the incorporated fibers is weak, and the matrix cracks propagate along the weak interface. Apart from this, the composite is found to exhibit an extensive and long fiber pull-out in the fracture surface. Crack deflection and fiber pull-out contributed to the good toughness of the composite under the loading.
机译：在450℃的低温下，通过硅溶胶-渗透-烧结法制备了3D正交石英纤维增强二氧化硅复合材料，研究了复合材料的力学性能和微观结构。复合材料的密度为1.71 g / cm〜3，室温下复合材料的弯曲强度和剪切强度平均值分别为29.4 MPa和14.8 MPa。弯曲载荷和剪切载荷下的破坏都不是灾难性的。与α-石英和α-方石英相比，3D正交石英纤维增强的二氧化硅复合材料的断裂韧性得到了很大的提高。使用数码相机和扫描电子显微镜确定复合材料的损坏特征。制备过程中状态良好，石英纤维未发生严重降解。基体和掺入的纤维之间的结合很弱，基体裂纹沿着脆弱的界面传播。除此之外，发现该复合材料在断裂表面上表现出广泛而长的纤维拉出。裂纹变形和纤维拉出有助于复合材料在载荷下的良好韧性。

著录项

  • 来源
    《Materials & design》 |2012年第4期|p.289-295|共7页
  • 作者

    Chengdong Li; Zhaofeng Chen; Jianxun Zhu; Yong Liu; Yun Jiang; Tianru Guan; Binbin Li; Long Lin;

  • 作者单位

    College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, PR China;

    College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, PR China;

    Sinoma Science & Technology Co. Ltd, Nanjing 210016, PR China;

    College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, PR China;

    Sinoma Science & Technology Co. Ltd, Nanjing 210016, PR China;

    College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, PR China;

    College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, PR China;

    College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, PR China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    A. ceramic matrix composites; E. mechanical; F. microstructure;

    机译：A.陶瓷基复合材料;E.机械;F.微观结构;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号