Compositions: ceramic – Ceramic compositions – Carbide or oxycarbide containing
Reexamination Certificate
2006-06-13
2006-06-13
Group, Karl (Department: 1755)
Compositions: ceramic
Ceramic compositions
Carbide or oxycarbide containing
Reexamination Certificate
active
07060641
ABSTRACT:
Fully dense, diamond-silicon carbide composites are prepared from ball-milled microcrystalline diamond/amorphous silicon powder mixture. The ball-milled powder is sintered (P=5–8 GPa, T=1400K–2300K) to form composites having high fracture toughness. A composite made at 5 GPa/1673K had a measured fracture toughness of 12 MPa·m1/2. By contrast, liquid infiltration of silicon into diamond powder at 5 GPa/1673K produces a composite with higher hardness but lower fracture toughness. X-ray diffraction patterns and Raman spectra indicate that amorphous silicon is partially transformed into nanocrystalline silicon at 5 GPa/873K, and nanocrystalline silicon carbide forms at higher temperatures.
REFERENCES:
patent: 3816085 (1974-06-01), Hall
patent: 4151686 (1979-05-01), Lee et al.
patent: 4231195 (1980-11-01), DeVries et al.
patent: 4874398 (1989-10-01), Ringwood
patent: 4948388 (1990-08-01), Ringwood
patent: 4985051 (1991-01-01), Ringwood
patent: 5010043 (1991-04-01), Ringwood
patent: 56-9276 (1981-01-01), None
patent: 2000-203955 (2000-07-01), None
patent: 8601433 (1986-03-01), None
patent: 8807409 (1988-10-01), None
J. Qian, G. Voronin, T. W. Zerda, D. He, and Y. Zhao, “High-Pressure, High-Temperature Sintering of Diamond-SiC Composites by Ball-Milled Diamond-Si Mixtures,” J. Mater. Res., vol. 17, No. 8, pp. 2153-2160, Aug. 2002.
E. A. Ekimov, A. G. Gavriliuk, B. Palosz, S. Gierlotka, P. Dluzewski, E. Tatianin, Yu. Kluev, A. M. Naletov, and A. Presz, “High-Pressure, High-Temperature Synthesis of SiC-Diamond Nanocrystalline Ceramics,” Appl. Phys. Lett., vol. 77, No. 7, pp. 954-956, Aug. 2000.
G. A. Voronin, T. W. Zerda, J. Qian, Y. Zhao, D. He, and S. N. Dub, “Diamond-SiC Nanocomposites Sintered From a Mixture of Diamond and Silicon Nanopowders,” DOE study, under W-7405-ENG-36 Program and M. Gearhart, RockBit International, pp. 1-17, unpublished.
Wolfgang Tillmann, “Trends and Market Perspectives for Diamond Tools in the Construction Industry,” International Journal of Refractory Metals & Hard Materials, vol. 18, pp. 301-306, 2000.
I. E. Clark and P. A. Bex, “The Use of PCD for Petroleum and Mining Drilling,” Industrial Diamond Review, Jan. 1999, pp. 43-49.
X. Jiang and C.-P. Klages, “Synthesis of Diamond/-β-SiC Composite Films by Microwave Plasma Assisted Chemical Vapor Deposition,” Appl. Phys. Lett. vol. 61, No. 14, pp. 1629-1631, Oct. 1992.
G. A. Voronin, “High Pressure Sintering of Diamond- and CBN-Based Composite Materials by Infiltration: Main Stages and Regularities,” V. Bakel Institute for Superhard Materials of the National Academy of Science of Ukraine, pp. 467, no date.
Y. S. Ko, T. Tsurumi, O. Fukunaga, and T. Yano, “High Pressure Sintering of Diamond-SiC Composite,” Journal of Material Science, vol. 36, pp. 469-475, 2001.
A. Shulzhenko, V. G. Gargin, A. A. Bochechka, G. S. Oleinik, and N. V. Danilenko, “Production, Structure, Properties, The use of Diamond Nanopowders to Strengthen a Diamond-SiC Composite Material,” Journal of Superhard Materials, vol. 22, No. 3, pp. 1-13, 2000.
S. K. Gordeev, S. G. Zhukov, L. V. Danchukova, and T. C. Ekstrom, “Low-Pressure Fabrication of Diamond-SiC-Si Composites,” Inorganic Materials, vol. 37, No. 6, pp. 579-583, 2001.
Stan Veprek, “the Search for Novel, Superhard Materials,” J. Vac. Sci. Technol. A, vol. 17, No. 5, pp. 2401-2420, 1999.
R. A. Andrievski, “Superhard Materials Based on Nanostructured High-Melting Point Compounds: Achievements and Perspectives,” International Journal of Refractory Metals & Hard Materials, vol. 19, pp. 447-452, 2001.
A. Witek, B. Palosz, S. Stel'makh, S. Gierlotka, R. Pielaszek, E. Ekimov, V. Filonenko, A. Gavriliuk, and V. Gryaznov, “Sintering of Compacts from Nanocrystalline Diamonds Without Sintering Agent,” Mat. Res. Soc. Symp. Proc., vol. 499, pp. 115-120, 1998.
G. Morell, R. S. Katiyar, S. Z. Weisz, and I. Balberg, “Characterization of the Silicon Network Disorder in Hydrogenated Amorphous Silicon Carbide Alloys with Low Carbon Concentrations,” Journal of Non-Crystalline Solids, vol. 194, pp. 78-84, 1996.
G. A. Voronin et al., “Diamond-SiC Nanocomposites Sintered From a Mixture of Diamond and Silicon Nanopowders,” Diamond and Related Materials, vol. 12, issue 9, pp. 1173-1178, published May 2003.
Y. Zhao et al, “Enhancement of Fracture Toughness in Nanostructured Diamond SiC Composites,” Applied Physics Letters, vol. 84, No. 5, pp. 1356-1358, published Feb. 2004.
J. Qian, T. W. Zerda, D. He, L. Daemen, and Y. Zhao, “Micron Diamond Composites with Nanocrystalline Silicon Carbide Bonding,” J. Mater. Res., vol. 18, No. 5, pp. 1173-1178, May 2003.
Qian Jiang
Zhao Yusheng
Borkowsky Samuel L.
Group Karl
LandOfFree
Diamond-silicon carbide composite does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Diamond-silicon carbide composite, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Diamond-silicon carbide composite will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3666904