Abstract
(1) Poly-titanosilazanes were synthesized by chemical modification with Ti(X)4 [X=N(CH3)2, OCH(CH3)2]. The chemical structure of the synthesized precursors was studied using IR and 1H NMR techniques. The polytitanosilazanes were found to contain some N-Ti bonds.(2) [Si-Ti-O-C-N] multicomponent amorphous powders were synthesized by pyrolysis of the poly-titanosilazanes at 1000°C in NH3.(3) Amorphous Si3N4 in the [Si-Ti-O-C-N] was rather stable below 1400°C and titanium was found to be effective to suppress crystallization of Si3N4. Above 1600°C, the Si-Ti-O-N liquid phase enhanced the α-/β- phase transformation of Si3N4.(4) The poly-titanosilazane derived from PHPS and Ti(N(CH3)2)4 yielded Si3N4-TiN ceramics by heat treatment at 1800°C in N2. TiN was observed as particles with diameter of smaller than 100nm. The poly-titanosilazane was found to be suitable for the synthesis of TiN nanopartitle-dispersed Si3N4-based ceramics.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.