Compositions: ceramic – Ceramic compositions – Carbide or oxycarbide containing
Patent
1990-07-23
1991-06-18
Bell, Mark L.
Compositions: ceramic
Ceramic compositions
Carbide or oxycarbide containing
51309, C04B 3556
Patent
active
050249762
ABSTRACT:
A metalcutting insert is provided with an alumina based ceramic composition composed of (in volume percent, v/o): about 1.5 to 37.5 silicon carbide whiskers; about 5 to 17.5 zirconia; residue of a magnesium oxide addition added in an amount effective to enhance the metalcutting lifetime of the cutting edge of the insert; and an alumina based matrix in which the silicon carbide whiskers, zirconia and residue of magnesium oxide are substantially homogeneously distributed. At least 2 v/o of the alumina based ceramic composition is tetragonal zirconia.
REFERENCES:
patent: 4218253 (1980-08-01), Dworak et al.
patent: 4292049 (1981-09-01), Tanaka et al.
patent: 4298385 (1981-11-01), Claussen et al.
patent: 4316964 (1982-02-01), Lange
patent: 4331048 (1982-05-01), Dworak et al.
patent: 4366254 (1982-12-01), Rich et al.
patent: 4419311 (1983-12-01), Claussen et al.
patent: 4421861 (1983-12-01), Claussen et al.
patent: 4506024 (1985-03-01), Claussen et al.
patent: 4507224 (1985-03-01), Toibana et al.
patent: 4543343 (1985-09-01), Iyori et al.
patent: 4543345 (1985-09-01), Wei
patent: 4657877 (1987-04-01), Becher et al.
patent: 4745091 (1988-05-01), Landingham
patent: 4746635 (1988-05-01), Inoue et al.
patent: 4749667 (1988-06-01), Jun et al.
patent: 4767727 (1988-08-01), Claussen et al.
patent: 4770673 (1988-09-01), Ketcham et al.
patent: 4789277 (1988-12-01), Rhodes et al.
patent: 4801510 (1989-01-01), Mehrotra et al.
patent: 4820663 (1989-04-01), Mehrotra et al.
patent: 4849381 (1989-07-01), Brandt et al.
patent: 4852999 (1989-08-01), Mehrotra et al.
patent: 4867761 (1989-09-01), Brandt et al.
patent: 4959331 (1990-09-01), Mehrotra et al.
patent: 4959332 (1990-09-01), Mehrotra et al.
patent: 4960735 (1990-10-01), Mehrotra et al.
patent: 4965231 (1990-10-01), Mehrotra et al.
Becher et al., "Transformation Toughened and Whisker Reinforced Ceramics," Soc. of Automotive Engineers, Proc. 21st Auto. Techn. Dev. Meeting, Mar. 1984, pp. 201-205.
Buljan, S. T. et al, "Ceramic Whisker--and Particulate-Composites: Properties, Reliability, and Applications," Ceramic Bulletin, vol. 68, No. 2 (1989) pp. 387-394.
"Feldmuhle SPK Tools Fast & Safe," Advertisement (9/1981).
Gruss, N. W., "Turning of Steel with Ceramic Cutting Tools," Tool Materials for High Speed Machining, (Proceedings held Feb. 25-27, 1987, Scottsdale, AZ) (1987), pp. 105-115).
Whitney, E. D. et al, "Engineered Ceramics for High Speed Machining," (Proceedings Feb. 25-27, 1987, Scottsdale, AZ) (1987) pp. 77-82.
Stevens, "An Introduction to Zirconia--Zirconia and Zirconia Ceramics," Magnesium Elektron Ltd., (1986).
"Multitoughening Ceramic," Techno Japan, vol. 19, No. 10, Oct. 1986.
"60 Year Old Grows Whiskers," Metal Powder Report, Jul. 1986.
E. L. Exner et al, "SiC Whisker Reinforced Al.sub.2 O.sub.3 ZrO.sub.2 Composites," Ceram. Eng. Sci. Proc., 9[7-8], pp. 597-602 (1988).
Clausen et al., "Whisker Reinforced Oxide Ceramics," Journal de Physique Colloque Cl, Supplement No. 2, Tome 47, Feb. 1986, pp. CL-693 to CL-702.
Grene et al, "Whisker Reinforced Ceramics," Ceramic Forum Int'l, Aug./Sep. 1987, pp. 303-317.
Becher et al, "Toughening of Ceramics by Whisker Reinforcement," Fracture Mechanics & Ceramics (Proceeding of Conf. Held 6-19-21, 1985 Virgnia) Ed. by Brandt et al, Plenum Press, NY (1986) pp. 61-73.
Porter et al, "Microstructural Development in MgO--Partially Stabilized Zirconia (Mg-PSZ)," Journal of Am. Ceramic Society, vol. 62, No. 5-6, May-Jun. 1979, pp. 298-305.
Claussen, "Fracture Toughness of Al.sub.2 O.sub.3 with an Unstabilized ZrO.sub.2 Dispersed Phase," Journal of the American Society, vol. 59(1-2) pp. 49-51.
Japan Ceramic News, vol. 1, No. 10 (12/10/87) pp. 1,2.
American National Standard for Cutting Tools, ANSI B212.4--1986.
Metal Working News, Oct. 3, 1988, "Greenleaf Makes Ceramic Cutting Insert."
N. Claussen, "Stress Induced Transformation of Tetragonal ZrO.sub.2 Particles in Ceramic Matrices," Am. Cer. Soc. Journal, vol. 61, No. 1-2 (1978) pp. 85, 86.
"Phase Diagrams for Ceramists," Amer. Cer. Soc. (1975 Supp) pp 117, 163 & 166.
Claussen et al, "Phase Transformations of Solid Solutions of ZrO.sub.2 & MfO.sub.2 in an Al.sub.2 O.sub.3 Matrix," Sci. & Tech. of Zirconia, Advances in Ceramics, vol. 3, Eds. A. H. Heuer & L. W. Hobbs, Am. Cer. Soc. (1981), pp. 164-166.
Tien et al, "Toughened Ceramics in the System Al.sub.2 O.sub.3 : Cr.sub.2 O.sub.3 /ZrO.sub.2 : HfO.sub.2 ", Int. J. High Tech Ceramics 2 (1986) pp. 207-219.
E. R. Billman et al, "Machining with Al.sub.2 O.sub.3 --SiC--Whisker Cutting Tools," Ceramic Society Bulletin, vol. 67, No. 6, 1988, pp. 1016 to 1019.
Billman Elizabeth R.
Mehrotra Pankaj K.
Bell Mark L.
Jones Deborah
Kennametal Inc.
Prizzi John J.
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