Abstract
Improving the SiC/zinc aluminum silicate (SiC/ZAS) interface was essential for increasing the mechanical strength of SiC/ZAS joints that were used to join carbon/carbon (C/C) composites and lithium aluminum silicate (LAS) glass ceramics. In this work, well-dispersed multi-walled carbon nanotubes (MWCNTs) were introduced at the SiC/ZAS interface in the joints by electrophoretic deposition, which changed the fracture feature of the bonded C/C-LAS from SiC/ZAS interface fracture to C/C fracture, resulting in significant improvements of the shear strength. Results showed that the average shear strength of the joints was increased by 94.8% after introducing MWCNTs, which was attributed to the obviously decreased micro-defects at the SiC/ZAS interface in the joints. MWCNT-reinforced joints also exhibited better thermal shock resistance evidenced by higher residual shear strengths than those of neat joints after thermal shock tests from 800 °C to room temperature and 1000 °C to room temperature, respectively, which was primarily attributed to the positive role of MWCNTs in alleviating thermal stress.
Original language | English |
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Pages (from-to) | 417-423 |
Number of pages | 7 |
Journal | Materials and Design |
Volume | 94 |
DOIs | |
State | Published - 15 Mar 2016 |
Keywords
- Carbon nanotube
- Carbon/carbon composite
- Electrophoretic deposition
- Joining
- Shear strength
- Thermal shock resistance