Haohui Hao , Xiaolin Dang , Tao He , Donglin Zhao , Xinlei Wang , Chao Chen , Xiaomeng Fan
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引用次数: 0
Abstract
For space gravitational wave detectors, ultra-high-precision detection requires structural materials with excellent dimensional stability, and the development of near-zero expansion materials has emerged. In this work, M55J Cf/SiC-SiBC with different PyC thicknesses were fabricated, and the mechanical and expansion properties were studied. The compatibility between near-zero expansion and high load-bearing capacity was realized by regulating the interphase thickness. The results show that, as PyC thickness increases, both the intra-bundle matrix content and the proportion of fiber corrosion area decrease. As interphase thickness increases from 180 to 420 nm, the tensile strength increases from 159 ± 12–254 ± 18 MPa and then decreases to 229 ± 3 MPa. The CTE of M55J Cf/SiC-SiBC decreased from 0.09 × 10−6 to −0.31 × 10−6 K−1. Through interphase thickness optimization, the macroscopic expansion is transformed to micro-zone deformation and the relative deformation between fiber and matrix can be coordinated, therefore the near-zero expansion property can be realized.
期刊介绍:
The Journal of the European Ceramic Society publishes the results of original research and reviews relating to ceramic materials. Papers of either an experimental or theoretical character will be welcomed on a fully international basis. The emphasis is on novel generic science concerning the relationships between processing, microstructure and properties of polycrystalline ceramics consolidated at high temperature. Papers may relate to any of the conventional categories of ceramic: structural, functional, traditional or composite. The central objective is to sustain a high standard of research quality by means of appropriate reviewing procedures.