Pressureless sintering of whisker reinforced alumina composites

Details Pressureless sintering of whisker reinforced alumina composites Pressureless sintering of whisker reinforced alumina composites

1994-09-13

1997-08-12

Fiorilla, Christopher A.

Plastic and nonmetallic article shaping or treating: processes

Outside of mold sintering or vitrifying of shaped inorganic...

Producing fiber containing article or fiber

264666, 264667, C04B 3332

Patent

active

056562179

ABSTRACT:
A composite and pressureless sintering process for making whisker-reinforced alumina composites using a nitride modifier. The whiskers are milled to an aspect ratio of less than 10. Green preform bodies are surrounded by a carbonaceous material during the sintering process to prevent direct exposure of the body surface to the atmosphere within the sintering furnace during the sintering step.

REFERENCES:
patent: 2979414 (1961-04-01), Ryshkewitch et al.
patent: 3562371 (1971-02-01), Bush
patent: 3886254 (1975-05-01), Tanaka et al.
patent: 3903230 (1975-09-01), Kamigaito et al.
patent: 4010233 (1977-03-01), Winter et al.
patent: 4071371 (1978-01-01), Milberg et al.
patent: 4104782 (1978-08-01), Veeck et al.
patent: 4108652 (1978-08-01), Ogawa et al.
patent: 4152223 (1979-05-01), Wallace et al.
patent: 4184884 (1980-01-01), Jong
patent: 4199339 (1980-04-01), Grunke
patent: 4218253 (1980-08-01), Dworak et al.
patent: 4230745 (1980-10-01), Betz et al.
patent: 4242294 (1980-12-01), Huther et al.
patent: 4250610 (1981-02-01), Wilbers et al.
patent: 4280973 (1981-07-01), Moskowitz et al.
patent: 4543345 (1985-09-01), Wei
patent: 4652413 (1987-03-01), Tiegs
patent: 4657877 (1987-04-01), Becher et al.
patent: 4745091 (1988-05-01), Landingham
patent: 4746635 (1988-05-01), Inoue et al.
patent: 4774209 (1988-09-01), Gadkaree et al.
patent: 4789277 (1988-12-01), Rhodes et al.
patent: 4820663 (1989-04-01), Mehrotra et al.
patent: 4839316 (1989-06-01), Tiegs
patent: 4946808 (1990-08-01), Wei et al.
patent: 4956316 (1990-09-01), Sawyer
patent: 4961757 (1990-10-01), Rhodes et al.
patent: 5009822 (1991-04-01), Sacks et al.
patent: 5053363 (1991-10-01), Brandt
patent: 5095730 (1992-03-01), Lauder
patent: 5207958 (1993-05-01), Tiegs
patent: 5389586 (1995-02-01), Rogers et al.
"Pressureless Sintering of Alumina Matrix Composites", ORNL Report TM 10705, pp. 89-94 (1988).
"Processing of Pressureless-Sintered SiC Whisker-Reinformed AI.sub.2 O.sub.3 Composites", Barclay S.J., Fox J.R., Bowen, H.K., Materials Science, vol. 22, No. 12 (Dec. 1987).
"Pressureless Sintering of Sic-Whisker-Reinforced Composites", Sacks M.D., Lee W.H., and Rojas O.E., Ceram. Eng. Sci. Proc., 9[7-8], 745-754 (1988) (TAB 21).
"Suspension Processing of AL.sub.2 O.sub.3 -Sic/Whisker Composites", Sacks M.D., Lee W.H., and Rojas O.E., J.Am. Ceram. Soc., 71[5] 370-379 (1988) (TAB 22).
"Slip Casting of SiC Whisker-Reinforced SI.sub.3 N.sub.4 ", Hoffman M.J., Nagel A., Greil P., Petzow G., J.Am. Ceram. So., 72[5] (1989).
"Temperature Dependence of Strengthening by Whisker-Reinforcement:SiC Whisker-Reinforced Alumina in Air", Becher P.F., Tiegs N., Adv. Ceram. Mat. 3 [2] (1988).
"Thermal Shock Behvaior of An Alumina-SiC Whisker Composite", Tiegs T.N., Becher, P.F., J. Am. Ceram. Soc., 70 [5] (1987).
"Hot Pressed SiC Whisker/Si.sub.3 N.sub.4 Matrix Composites", Shalek P.D., Petrovic J.J., Hurley G., Gac F., Am. Ceram. Soc. Bull, 65 [2] (1986).
"SiC Whisker Reinforced Si.sub.3 N.sub.4 Composites", Kandori T., Kobayashi S., Wada S. Kamigaito I., J. Mat. Sci. Ltrs. 6 [11] (1987).
"S.sub.3 N.sub.4 -SiC Composites", Buljan S.T., Baldoni J.G., Huckabee M.L., Am. Ceram. Soc., Bull., 66 [22] (1987).
"Ceramic Tools Improve Cutting Performance", Gruss W.W., Am. Ceram. Soc. Bull, 65 [6] (1988).
"Constrained Network Model For Predicting Densification Behavior of Composite Powders", Lange F.F., J. Mater. Res., 2 (2), Jan./Feb. 1987.
"Sintering of Whisker-Reinforced Ceramics and Glasses", Chun-Hway Hsueh, J. Am. Ceram. Soc., 71 [10] C-442-444 (1988).
"Alumina-Sic Whisker Composites", Tiegs T.N. and Becher P.F., Ceram. Eng. and Sci. Proc., Sep./Oct. 1182-1186, 1986.
"Sintered AL.sub.2 O.sub.3 -Sic-Whisker Composites", Tiegs T.N. and Becher P.F., Am. Ceram. Soc. Bull., 66 [2] 339-42 (1987).
"Pressureless Sintering of AL.sub.2 O.sub.3 -Sic-Whisker Composites", Young-Wook Kim, June-Gunn Lee, J. Mater. Sci., 26 (1991) 1316-1320.

Affiliated with

Also associated with

Rating

Pressureless sintering of whisker reinforced alumina composites does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pressureless sintering of whisker reinforced alumina composites, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pressureless sintering of whisker reinforced alumina composites will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-157786