Results 171 to 180 of about 1,463 (216)

Fractography of Reaction-Sintered Si3N4

Journal of Engineering for Power, 1980
Fractography studies were accomplished on two reaction-sintered Si3N4 materials (Norton NC-350 Si3N4 and KBI (Kawecki-Berylco) Si3N4) which had been tested in four-point bending at room temperature, 1200, 1350, and 1500°C in air. At room temperature NC-350 exhibited uniform planar features representing a transgranular fracture mode, uniformly ...
M. G. Mendiratta, P. L. Land, R. Ruh, R. W. Rice, D. C. Larsen   +4 more
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Fabrication of Reaction‐Sintered Sialon

Journal of the American Ceramic Society, 1977
A factorial design experiment was conducted to determine the major parameters affecting the densification of mixtures having the composition (in mol%) 50 Si 3 N 4 , 25 A1 2 O 3
R. R. WILLS, R. W. STEWART, J. M. WIMMER
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Hydrothermal Reaction Sintering of High Density Sintered Oxides

1989
Hydrothermal Reaction Sintering is one of methods to produce high density oxides ceramics. Oxide formation occurs between metal and high temperature and high pressure solutions at certain temperature, pressure and time. $$ Me + {H_2}O \to Me{O_X} + {H_2} $$
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Microstructure of cBN-diamond sintered compact prepared by reaction sintering

Journal of Materials Science, 1991
cBN-diamond composite sintered compacts (diamond content 15–70 wt %) were prepared by reaction sintering at 7–7.5 GPa and 1400–1700 °C for 10–30 min from the starting powder of the hBN-diamond system in the presence of 1 wt % NH4NO3 as a volatile catalyst. A fully dense sintered compact with 99% conversion from hBN to cBN was obtained at 7 GPa and 1700
H. Itoh, H. Takao, H. Iwahara
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Reaction sintering of Fe-Al-Si alloys

Journal of Phase Equilibria, 2002
The present study concerns the production of multiphase alloys of the Fe-Al-Si system using a powder metallurgical approach. Several compositions have been considered based on α-Fe, α′-FeAl; and α″-Fe3Al intermetallic phases. Elemental powder mixtures were compacted and sintered in a dilatometer.
Gialanella, Stefano, G. Camana, J. Kazior, Lutterotti, Luca, T. Pieczonka, Molinari, Alberto   +5 more
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Reaction Sintering of Submicrometer Silicon Powder

Journal of the American Ceramic Society, 1987
Submicrometer silicon powder synthesized by thermally induced, vapor‐phase reaction in an aerosol reactor was densified by reaction sintering to form Si 3 N 4 .
Gregory, Otto J., Lee, Sang-Baek, Flagan, Richard C.   +2 more
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Reaction-sintered aluminium titanate

Journal of Materials Science Letters, 1989
On etudie le frittage reactif de melanges de poudres de Al 2 O 3 et TiO 2 , avec addition de 2% en poids de BaO, Li 2 O, SnO 2 ou Na 2 O.
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Reaction sintering of zircon–dolomite mixtures

Journal of the European Ceramic Society, 2001
Abstract Dolomite–zircon mixtures have become interesting for finding alternate sources to improve the production of high magnesia refractories. To asses this option, two minerals, dolomite and zircon were selected, as economically raw materials, to produce MgO–CaZrO 3 –Ca 2 SiO 4 materials.
J.L. Rodrı́guez, M.A. Rodrı́guez, S. De Aza, P. Pena   +3 more
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Hydrothermal Reaction Sintering of Oxides

1989
Metal powders or chips were reacted with high temperature and high pressure solution to form oxides under certain hydrothermal conditions. $$ Me + X{H_2}O \to Me{O_X} + X{H_2} $$ (1) Well sintered oxide body was obtained at 1000°C for 3 to 15 h under high pressure of 100 MPa.
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Reaction sintering and its practical application

Glass and Ceramics, 1993
Some important premises in reaction sintering, which compacts ceramics due to chemical reactions accompanied by a positive volume effect were examined. A calculated and graphic interpretation of the process was given and can be used to predict compaction in reaction sintering.
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