Synthesis of continuous silicon carbide-titanium carbide hybrid fibers through sol-gel processing

Journal Article · Mon Jul 01 00:00:00 EDT 1996 · Materials Research Bulletin

DOI:https://doi.org/10.1016/0025-5408(96)00063-3· OSTI ID:271621

Hasegawa, Isao; Nakamura, Toshiyuki ^[1]; Kajiwara, Meisetsu ^[2]

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1. Gifu Univ. (Japan)
2. Nagoya Univ., Aichi (Japan)

Silica-titania-phenolic resin hybrid fibers have been prepared from ethanol solutions of tetraethoxysilane (TEOS), titanium tetrakis(2,4-pentanedionate) (TTP), and novalac-type phenolic resins, where water and HCl have been added at a (TEOS + TTP):water:HCl molar ratio of 1:2:0.01, by sol-gel processing. The Si-to-Ti atomic ratio of the hybrid fibers was varied down to 10.4 by changing the amounts of TEOS and TTP in the starting solutions. Carbothermal reduction of both silica and titania components of the hybrid fibers has taken place at 1,500 C in an Ar flow, resulting in the formation of continuous {beta}-silicon carbide-titanium carbide hybrid fibers with Si-to-Ti atomic ratios varied down to 9.9.

• OSTI ID: 271621
• Journal Information: Materials Research Bulletin, Vol. 31, Issue 7; Other Information: PBD: Jul 1996
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COMPOSITE MATERIALS
SOL-GEL PROCESS
SYNTHESIS
SILICON CARBIDES
TITANIUM CARBIDES
SILICON OXIDES
TITANIUM OXIDES
PHENOLS
RESINS
ORGANOMETALLIC COMPOUNDS
ETHANOL
PROPANOLS
WATER
HYDROCHLORIC ACID
HYDROLYSIS
DEHYDROCYCLIZATION
HEAT TREATMENTS
REDUCTION