High-temperature oxidation of tungsten wires in CO$sub 2$--Ar mixtures
Journal Article
·
· Met. Trans., v. 5, no. 1, pp. 35-38
OSTI ID:4364214
The oxidation kinetics of tungsten wires in natural convection has been investigated in CO/sub 2/-- argon mixtures in the temperature range between 2450 and 3000 deg K and the CO/sub 2/ partial pressure range between 2.13 x 10/sup -5/ to 1.28 x 10/sup -4/ atm at 0.789 atm total pressure. The rate generally decreases with increasing temperature at constant bulk CO/sub 2/ pressure with a magnitude ranging between 0.5 to 5 x 10/sup -6/ g/cm/sup 2/ s. The oxidation reaction is gas transport controlled as demonstrated by supplemental measurements at 0.395 atm total pressure. A volatile oxide counter diffusion model, which has been previously proposed to explain the oxidation kinetics of tungsten wires in O/ sub 2/-argon mixtures, is in reasonable agreement with the data. (auth)
- Research Organization:
- Westinghouse Research Labs., Pittsburgh
- NSA Number:
- NSA-29-018854
- OSTI ID:
- 4364214
- Journal Information:
- Met. Trans., v. 5, no. 1, pp. 35-38, Journal Name: Met. Trans., v. 5, no. 1, pp. 35-38; ISSN MTGTB
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
Similar Records
Physical and electrochemichromic properties of rf sputtered tungsten oxide films
KINETIC STUDIES OF THE REACTIONS OCCURRING BETWEEN TUNGSTEN AND GASES AT LOW PRESSURE AND HIGH TEMPERATURES (thesis)
Polyketones and polysulfones for conservation in the ethylene polymer industry. Progress report No. 5, April-June 1979
Journal Article
·
Mon Mar 31 23:00:00 EST 1986
· J. Appl. Phys.; (United States)
·
OSTI ID:6085730
KINETIC STUDIES OF THE REACTIONS OCCURRING BETWEEN TUNGSTEN AND GASES AT LOW PRESSURE AND HIGH TEMPERATURES (thesis)
Technical Report
·
Sat Mar 31 23:00:00 EST 1962
·
OSTI ID:4827540
Polyketones and polysulfones for conservation in the ethylene polymer industry. Progress report No. 5, April-June 1979
Technical Report
·
Wed Aug 01 00:00:00 EDT 1979
·
OSTI ID:5776377
Related Subjects
*CARBON DIOXIDE-- CORROSIVE EFFECTS
*TUNGSTEN-- OXIDATION
ARGON
BINARY MIXTURES
CHEMICAL REACTIONS
LOW PRESSURE
MOCKUP
N50210* --Metals
Ceramics
& Other Materials--Metals & Alloys--Corrosion & Erosion & Surface Phenomena
NATURAL CONVECTION
TEMPERATURE DEPENDENCE
VERY HIGH TEMPERATURE
WIRES CORROSIVE EFFECTS
*TUNGSTEN-- OXIDATION
ARGON
BINARY MIXTURES
CHEMICAL REACTIONS
LOW PRESSURE
MOCKUP
N50210* --Metals
Ceramics
& Other Materials--Metals & Alloys--Corrosion & Erosion & Surface Phenomena
NATURAL CONVECTION
TEMPERATURE DEPENDENCE
VERY HIGH TEMPERATURE
WIRES CORROSIVE EFFECTS