Preparation of jointed composites with interconnected SiC nanowires network for nuclear SiC fiber reinforced SiC composites
Source abstract
Abstract
Abstract The reliable jointing of SiC f /SiC is considered to be a key factor limiting the application in the field of nuclear cladding. In this work, a jointing layer with interconnected SiC nanowires (SiCNWs) toughening network is prepared by a typical two‐step routine. The high‐viscosity slurry containing the precursor is pyrolyzed to form a porous SiC‐based jointing layer, which is then densified by chemical vapor infiltration. Besides, SiC powders are introduced into the slurry to further increase the density of the jointing layer. The homogeneous SiC jointing material enables the strength and effectively avoids the mismatch between the thermal expansion coefficient of the jointing layer and SiC f /SiC composites, and the apparent shear strength of the jointing specimen reaches 7.211 MPa. It is found that the joint with SiCNWs shows better shear strength than the joint without SiCNWs, and the improved mechanical properties could be attributed to the pull‐out and bridging of SiCNWs.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Advanced ceramic materials synthesis · Aluminum Alloys Composites Properties · Advanced materials and composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
State Key Laboratory of High Performance Ceramics & Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai China
Structural Ceramics and Composites Engineering Research Center Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai China
School of Physical Science and Technology ShanghaiTech University Shanghai China
University of Chinese Academy of Sciences Beijing China
Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing China
Funding
National Key Research and Development Program of China · National Natural Science Foundation of China · Natural Science Foundation of Shanghai Municipality
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