Back to Search
Start Over
Synthesis of Polyyttriocarbosilane and its Conversion to Yttrium-Containing Ceramic.
- Source :
-
Journal of Inorganic & Organometallic Polymers & Materials . Sep2012, Vol. 22 Issue 4, p731-736. 6p. - Publication Year :
- 2012
-
Abstract
- The polyyttriocarbosilane (PYCS) with various quantities of yttrium was obtained by reacting yttrium acetylacetonate (Y(AcAc)) with polycarbosilane (PCS). The molecular weight, softening point, and Si-H bond content of the resulting PYCS are controlled by the Y(AcAc):PCS weight ratio, reaction temperature and reaction time. The main chain of the PYCS is made up of alternating carbon and silicon atoms with small amount of Si-O-Y presented in the main chain and Si-H groups at the side chain. The pyrolysis process of PYCS was investigated by TG and XRD. The results reveal that the polymer-to-ceramic transition of the PYCS occurs in three steps. The final ceramics obtained at 1,800 °C contain a large number of β-SiC crystallites and a small amount of α-SiC crystallites. [ABSTRACT FROM AUTHOR]
- Subjects :
- *YTTRIUM
*MOLECULAR weights
*PYROLYSIS
*SILANE
*CARBON
*X-ray diffraction
Subjects
Details
- Language :
- English
- ISSN :
- 15741443
- Volume :
- 22
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Journal of Inorganic & Organometallic Polymers & Materials
- Publication Type :
- Academic Journal
- Accession number :
- 76487262
- Full Text :
- https://doi.org/10.1007/s10904-011-9647-7