SOME ASPECTS OF THE OXIDATION OF MANGANESE IN AIR IN THE INTERVAL FROM 400 TO 1200 C (in Spanish)
The kinetics of the oxidation of manganese in air in the interval from 400 to 1200 deg C was studied with micrographic and gravimetric methods. The kinetics of the oxidation of MnO in air was studied in the same interval. The oxidation film consists of a blackish gray external coating and a green oxidation layer between the external coating and the metal. The blackish gray film is Mn/ sub 3/O/sub 4/ and the intermediate film is MnO. The relative thickness of the oxidation film and the effect of temperatare on the speed of oxidation were also determined. At temperatures of 800 deg C the oxidation film on MnO is Mn/sub 2/O/ sub 3/ and MnO/sub 4/. At 900 deg C and above only Mn/sub 3/O/sub 4/ is found. The law of isothermal increase and the effect of temperature on the oxidation velocity were also determined. (J.S.R.)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-14-015040
- OSTI ID:
- 4157951
- Journal Information:
- Anales fac. ing., Univ. Concepcion, Chile, Journal Name: Anales fac. ing., Univ. Concepcion, Chile Vol. Vol: 7
- Country of Publication:
- Country unknown/Code not available
- Language:
- Spanish
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