Abstract
The SiC coatings were fabricated by the pyrolysis of polycarbosilane (PCS)/aluminum, in which PCS acts as precermaic precursor of SiC and aluminum (Al) powder acts as an active filler to both compensate the volume shrinkage of SiC coatings during pyrolysis and enhance the adhesion of SiC coatings with Fecralloy substrate. SiC coatings as thick as ~35 μm without cracking can be fabricated through our approach. Microstructural analysis revealed that the SiC coatings were composed of α-Al 2O 3 and β-SiC. Hardness and modulus of the SiC coatings as measured by nano-indentation were 12. 2 ± 4. 0 and 153. 7 ± 47. 0 GPa, respectively.
Original language | English |
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Pages (from-to) | 534-540 |
Number of pages | 7 |
Journal | Journal of Inorganic and Organometallic Polymers and Materials |
Volume | 21 |
Issue number | 3 |
DOIs | |
State | Published - Sep 2011 |
Externally published | Yes |
Funding
Acknowledgments The authors thank the support of China Scholarship Council. We also thank Dr. Ian Shapiro and Dr. Libo Deng for the very helpful discussions.
Funders | Funder number |
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China Scholarship Council |
Keywords
- Aluminum
- Coating
- Polycarbosilane
- Silicon carbide