期刊
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
卷 39, 期 11, 页码 3380-3386出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2019.04.043
关键词
SiC whisker-reinforced SiC composites; Spray drying; Binder jetting; Chemical vapor infiltration
资金
- National key R&D Program of China [2017YFB1103500]
- National Natural Science Foundation of China [51632007, 51602258, 51521061, 51672218, 51872229, 51802263]
- 111 Project of China [B08040]
Spray drying, binder jetting and chemical vapor infiltration (CVI) were used in combination for the first time to fabricate SiC whisker-reinforced SiC ceramic matrix composites (SiCw/SiC). Granulated needle-shaped SiCw was spray dried into SiCw spherical particles to increase flowability and thereby increase printability. Then, binder jetting was employed to print a novel SiCw preform with two-stage pores using the SiCw spherical particles. The subsequent CVI technology produced pure, dense, and continuous SiC matrix with high modulus and strength. Consequently, SiCw/SiC with appropriate mechanical properties was obtained. Finally, the challenges of the novel method and the ways to improve the mechanical properties of SiCw/SiC are discussed.
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