期刊
CERAMICS INTERNATIONAL
卷 43, 期 7, 页码 5607-5615出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2017.01.093
关键词
C/ZrC ceramic; Hot pressing sintering; ZrO2; Filter paper; In-situ reaction
资金
- National Natural Science Foundation of China [51172256, 51142010, 51372099]
- Doctoral Fund of University of Jinan [XBS1310]
- Program for Scientific research innovation team in Colleges and universities of Shandong Province
- Opening Project of State Key Laboratory of High Performance Ceramics and Superfine Microstructure [SKL201601SIC]
- China Postdoctoral Science Foundation [2016M602184]
Capillary infiltration and an in situ reaction between filter papers and zirconia powders were employed to synthesize laminated C/ZrC composite via vacuum impregnation and hot-pressing sintering at 1700 degrees C for 90 min under a pressure of 30 MPa. The microstructures and mechanical properties of the laminated C/ZrC composite were characterized via XRD, SEM, TEM analyses and the three-point bending test. The results indicated that the obtained composite exhibited a distinct laminar structure with alternating carbon and zirconium carbide layers. The composite had a bulk density of 1.89 g/m(3), an open porosity of 21.6%, and a bending strength of 128 MPa. Typical non-brittle fracture behaviors are observed, and the composites show an elastic deformation at the beginning of the test, exhibiting a zigzagging rise until the maximum stress is reached.
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