Compositions: ceramic – Ceramic compositions – Refractory
Reexamination Certificate
2005-09-27
2009-11-03
Group, Karl E (Department: 1793)
Compositions: ceramic
Ceramic compositions
Refractory
C501S097300, C501S097400, C501S099000, C501S100000, C252S506000, C252S507000, C252S520220, C252S521300
Reexamination Certificate
active
07612006
ABSTRACT:
To provide a sintered silicon nitride with conductivity and densification, an oxide of titanium group elements, such as titanium oxide, hafnium oxide, zirconium oxide and the like, aluminum oxide and/or aluminum nitride is added as needed to silicon nitride-oxidant of rare-earth elements-aluminum oxide system or silicon nitride-oxide of rare-earth elements-magnesia system, and then specified quantity of carbon nonotube (CNT) is added to the above mixture. CNT generates silicon carbide after the reaction with contiguous or proximal silicon nitride and the like depending on the sintering duration at high temperature. Since silicon carbide is generated along with nanotubes, the silicon carbide functions as conductor with excellent heat resistance, corrosion resistance and the like.
REFERENCES:
patent: 7306828 (2007-12-01), Barrera et al.
patent: 2004/0029706 (2004-02-01), Barrera
patent: 2004-002067 (2004-01-01), None
patent: 2004-244273 (2004-09-01), None
patent: 2006182590 (2006-07-01), None
patent: 2007297231 (2007-11-01), None
Balazsi et al., “Manufacture and examination of C/Si3N4 Nanocomposites”, J. Eur. Ceramic Soc. 24 (2004) 3287-3294.
Balazsi et al., “Preparation and characterization of carbon nanotube reinforced silicon nitride composites”, Mater. Sci. and Engin C 23 (2003) 1133-1137.
Katashima Tomofumi
Komeya Katsutoshi
Meguro Takeshi
Tatami Jun-ichi
Wakihara Toru
Cohn PLLC Gary C
Group Karl E
Yokohama TLO Company Ltd.
LandOfFree
Conductive silicon nitride materials and method for... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Conductive silicon nitride materials and method for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Conductive silicon nitride materials and method for... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4128971