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Method of nitriding, carburizing, or oxidizing refractory metal articles using microwaves

Patent ·
OSTI ID:868496
 [1];  [2];  [3]
  1. Knoxville, TN
  2. Oak Ridge, TN
  3. Lenoir City, TN
+ Show Author Affiliations

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.

Research Organization:
LOCKHEED MARTIN ENRGY SYST INC
DOE Contract Number:
AC05-84OR21400
Assignee:
Martin Marietta Energy Systems, Inc. (Oak Ridge, TN)
Patent Number(s):
US 5154779
OSTI ID:
868496
Country of Publication:
United States
Language:
English

References (2)

Unusual properties of microwave-sintered yttria-2wt% zirconia journal August 1988
Enhanced Thermal Shock Properties of Y 2 O 3 -2 WT.% ZrO 2 Heated Using 2.45 Ghz Radiation journal January 1988

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Related Subjects

/148/204/219/427/
addition
applying
article
articles
carbide
carbo-nitride
carburizing
coating
consolidated
consolidated metal
containing
containing gas
convert
energy
forming metal
gas
heated
heating
inside
introduced
maintained
metal
metal article
metal articles
metalloid
metalloid article
metalloids
method
microwave
microwave energy
microwave heating
microwave oven
microwaves
nitride
nitriding
nitrogen
nitrogen containing
oven
oxide
oxidizing
period
placed
placed inside
react
refractory
refractory metal
refractory nitride
refractory-nitride-forming
sufficient
temperature
temperature sufficient
time
time sufficient
wave energy