Method for making silicon carbide whiskers

Details Method for making silicon carbide whiskers Method for making silicon carbide whiskers

2005-02-22

2009-02-03

Johnson, Edward M (Department: 1793)

Chemistry of inorganic compounds

Silicon or compound thereof

Binary compound

C423S344000

Reexamination Certificate

active

07485278

ABSTRACT:
A ceramic composite made by compacting a starting powder blend. The composite includes between about 50 volume percent and about 99 volume percent of a ceramic matrix; and between about 1 volume percent and about 50 volume percent as-processed silicon carbide whiskers. The ceramic composite having a fracture toughness (KIC) of greater than about 4.0 MPam1/2. The ceramic has a silicon carbide whisker density as measured in whiskers per square millimeter equal to or less than about 1500 times the volume percent of silicon carbide whiskers, but in a density sufficient for the ceramic composite to have the fracture toughness.

REFERENCES:
patent: 4463058 (1984-07-01), Hood et al.
patent: 4507224 (1985-03-01), Toibana et al.
patent: 4543345 (1985-09-01), Wei
patent: 4652413 (1987-03-01), Tiegs
patent: 4789277 (1988-12-01), Rhodes et al.
patent: RE32843 (1989-01-01), Wei
patent: 4801510 (1989-01-01), Mehrotra et al.
patent: 4867761 (1989-09-01), Brandt et al.
patent: 4916092 (1990-04-01), Tiegs et al.
patent: 4956316 (1990-09-01), Sawyer
patent: 4961757 (1990-10-01), Rhodes et al.
patent: 5017528 (1991-05-01), Tiegs et al.
patent: 5059564 (1991-10-01), Mehrotra et al.
patent: 5095730 (1992-03-01), Lauder
patent: 5232318 (1993-08-01), Santhanam et al.
patent: 5246894 (1993-09-01), Okuda et al.
patent: 5254142 (1993-10-01), Johansson et al.
patent: RE34446 (1993-11-01), Wei
patent: 5264297 (1993-11-01), Jindal et al.
patent: 5376600 (1994-12-01), Tiegs
patent: 5439854 (1995-08-01), Suzuki et al.
patent: 5449647 (1995-09-01), Brandt
patent: 5538926 (1996-07-01), Tsuchida et al.
patent: 5601764 (1997-02-01), Suzuki et al.
patent: 5618510 (1997-04-01), Okada et al.
patent: 5656217 (1997-08-01), Rogers et al.
patent: 5656561 (1997-08-01), Rogers et al.
patent: 5676918 (1997-10-01), Okada et al.
patent: 5688729 (1997-11-01), Andersson et al.
patent: 5733829 (1998-03-01), Tange et al.
patent: 5955390 (1999-09-01), Mehrotra et al.
patent: 6204213 (2001-03-01), Mehrotra et al.
patent: 6248681 (2001-06-01), Kato
patent: 6620756 (2003-09-01), Mah et al.
patent: 5954680 (1984-03-01), None
patent: 8605480 (1986-09-01), None
Milewski et al., “Whiskers” Los Alamos Scientific Lab, New Mexico pp. 446-464, no date.
Akatsu et al., “Effects of Whisker Content and Dimensions on the R-curve Behavior of an Alumina Matrix Composite Reinforced with Silicon Carbide Whiskers,” J. Mater, Res., vol. 16, No. 7, Jul. 2001.
Becher et al., “Influence of Reinforcement Content and Diameter on the r-Curve Response in SiC-Whisker-Reinforced Alumina,” J. Am. Ceram. Soc. 79 [2] pp. 298-304, no date.
Becher et al., “Toughening Behavior in Whisker-Reinforced Ceramic Matrix Composites,” J. Am. Ceram. Soc., 71 [2] (1988) pp. 1050-1061.
Whitney et al., “New and Improved Cutting Tool Materials,” Technical Report AFML-TR-60-50 Mar. 1989 pp. 6-7, 114, 119-128, 160-161, 186-188, 196=197, 368-369.
Tiegs et al., “Sintered Al2O3-SiC-Whisker Composites,” Am. Ceram. Soc. Bull., 66 [2] pp. 339-342 (1987).
Pred, “Silicon Nitride Whisker and Silicon Carbide Whisker of Tateho Chemical Industries Co., LTD.” Distributed in the U.S. by ICD pp. 1-26, no date.
Tamari et al., “Fabrication of Silicon Carbide Whisker-Silicon Nitride Composite Materials and Their Physical Properties” Translation: Osaka Kogyo Gijutsu Shikensho Kiho, 33 (2): 129-134, 1962 pp. 1-11.
Tokawhisker Silicon Carbide Whisker Brochure, Tokai Carbon Co., LTD. 1995.

Affiliated with

Also associated with

Rating

Method for making silicon carbide whiskers does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for making silicon carbide whiskers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for making silicon carbide whiskers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4087208