Preparation of conductive Si/C/N/Ni ceramic nanocomposites using phenyl-substituted polysilazane and nickelocene as precursors
- Authors
- Jeong, Hye-Rim; Huh, Tae-Hwan; Kim, Byung Hyo; Kwark, Young-Je
- Issue Date
- Jun-2022
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Conductive ceramic; Silicon carbonitride; Nanocomposite; Preceramic polymer; Polysilazane
- Citation
- CERAMICS INTERNATIONAL, v.48, no.12, pp.16576 - 16583
- Journal Title
- CERAMICS INTERNATIONAL
- Volume
- 48
- Number
- 12
- Start Page
- 16576
- End Page
- 16583
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/42407
- DOI
- 10.1016/j.ceramint.2022.02.202
- ISSN
- 0272-8842
- Abstract
- In this study, a conductive Si/C/N/Ni nanocomposite was prepared using phenyl-substituted polysilazane and nickelocene (NiCp2) as precursors. Ni-related nanoparticles were uniformly distributed throughout the Si/C/N/ Ni nanocomposite without aggregation because of the large number of nitrogen atoms in the silsesquiazane used as a precursor of the matrix. In addition, the nickel silicide crystalline phase and turbostratic carbon phase grew in the matrix of the Si/C/N/Ni nanocomposite at low temperatures because NiCp2 acted as a catalyst. Moreover, NiCp2 contributed to the increase in the turbostratic carbon crystallinity through the dehydrogenation reaction, resulting in an improved electrical conductivity of the Si/C/N/Ni nanocomposite.
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