Method of nitriding, carburizing, or oxidizing refractory metal

Details Method of nitriding, carburizing, or oxidizing refractory metal Method of nitriding, carburizing, or oxidizing refractory metal

1992-02-18

1992-10-13

Wyszomierski, George

Metal treatment

Process of modifying or maintaining internal physical...

Carburizing or nitriding using externally supplied carbon or...

148218, 148220, 148224, 148241, 20415743, 219 1055R, 427585, 427590, C21D 109, H05B 664

Patent

active

051547791

ABSTRACT:
A method of nitriding an article of refractory-nitride-forming metal or metalloids. A consolidated metal or metalloid article is placed inside a microwave oven and nitrogen containing gas is introduced into the microwave oven. The metal or metalloid article is heated to a temperature sufficient to react the metal or metalloid with the nitrogen by applying a microwave energy within the microwave oven. The metal or metalloid article is maintained at that temperature for a period of time sufficient to convert the article of metal or metalloid to an article of refractory nitride. in addition, a method of applying a coating, such as a coating of an oxide, a carbide, or a carbo-nitride, to an article of metal or metalloid by microwave heating.

REFERENCES:
patent: 2739907 (1956-03-01), Nowak
patent: 3171009 (1965-02-01), Scheller et al.
patent: 3585258 (1971-06-01), Levinson
patent: 4057702 (1977-11-01), Lacombe-Allard
patent: 4100386 (1978-07-01), Bardet
patent: 4147911 (1979-04-01), Nishitani
patent: 4163140 (1979-07-01), Bardet
patent: 4189629 (1980-02-01), Kraze
patent: 4307277 (1981-12-01), Maeda et al.
patent: 4323745 (1982-04-01), Berggren et al.
patent: 4529856 (1985-07-01), Meek et al.
patent: 4529857 (1985-07-01), Meek et al.
patent: 4559429 (1985-12-01), Holcombe
patent: 4565669 (1986-01-01), Collins et al.
patent: 4683363 (1987-07-01), Scovell
patent: 4743340 (1988-05-01), Wrenn, Jr. et al.
patent: 4757172 (1988-07-01), Palaith et al.
patent: 4764102 (1988-08-01), Takahashi
patent: 4767902 (1988-08-01), Palaith et al.
patent: 4771153 (1988-09-01), Fukushima et al.
patent: 4772770 (1988-09-01), Matsui et al.
patent: 4784686 (1988-11-01), Meek et al.
patent: 4806718 (1989-02-01), Seaborne et al.
patent: 4808780 (1989-02-01), Seaborne
patent: 4810846 (1989-03-01), Holcombe et al.
patent: 4880578 (1989-11-01), Holcombe et al.
C. E. Holcombe and N. L. Dykes, "High-Temperature Microwave Sintering of Nonoxide Ceramics," 91st Annual Meeting of the American Ceramics Society, Apr. 25, 1989.
C. E. Holcombe, T. T. Meek, and N. L. Dykes "Unusal Properties of Microwave-Sintered Yttria-2 wt. % Firconia," J. Mat'l Sc. Letters, 7, 881-884 (1988).
C. E. Holcombe, T. T. Meek, and N. L. Dykes "Enhanced Thermal Shock Properties of Y.sub.2 O.sub.3 -2 wt. % ZrO.sub.2 Heated Using 2.45 GHz Radiation," Mat. Res. Soc. Symp. proc., vol. 124, Apr. 5-8 (1988).
W. H. Sutton, "Microwave Processing of Ceramic Materials," Ceramic Bulletin, vol. 68, No. 2, 376-286 (1989).
C. E. Holcombe, "New Microwave Coupler Material", Am. Ceram. Soc. Bulletin, vol. 62, 1388 (1983).
J. A. Mangels, "Effect of Rate-Controlled Nitriding and Nitrogen Atmospheres on the Formation of Reaction-Bonded Si.sub.3 N.sub.4," Am. Ceram. Soc. Bull., 60, 613-617 (1981) Discusses Rate-Controlled Nitriding.
J. M. Blocher, Jr. "Nitrides", High-Temperature Materials and Technology, Chap. 11, 379-382 (1967) Discusses Nitrides of Fransition Elements of the Third, Fourth, Fifth, and Sixth Groups of the Periodic Table.
The Condensed Chemical Dictionary, Van Nostrand Reinhold Company, Tenth Edition, 741, 887 (1981) Discusses Definitions of "Nonmental" and Refractory.
R. I. Jaffee, D. J. Maykuth, and E. M. Sherwood, "Refractory Metals and Metalloids", High-Temperature Materials and Technology, Ch. 6, 152-154 (1967) Discusses Refractory Metals and Metalloids.

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