Oxidation resistance and strength of a molybdenum fiber–oxide matrix composite material

Oxidation resistance and strength of a molybdenum fiber–oxide matrix composite material

The oxidation kinetics of a composite material, which consists of an Al 2 O 3 –Al 5 Y 3 O 12 matrix and molybdenum fibers and has a high cracking resistance, is studied. The mass loss of the composite material during oxidation is shown to be several orders of magnitude lower than that of molybdenum....

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Veröffentlicht in:Russian metallurgy Metally 2016-10, Vol.2016 (10), p.912-917
Hauptverfasser: Mileiko, S. T., Novokhatskaya, N. I., Prokopenko, N. A., Kolchin, A. A., Mitskevich, A. Ya, Chumichev, V. A., Novikov, I. V.
Format: Artikel
Sprache:eng
Schlagworte:
Aluminum
Chemistry and Materials Science
Composite materials
Garnets
Materials Science
Metallic Materials
Molybdenum
Oxidation
Oxidation resistance
Oxides
Promising Materials and Technologies
Strength
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Zusammenfassung:The oxidation kinetics of a composite material, which consists of an Al 2 O 3 –Al 5 Y 3 O 12 matrix and molybdenum fibers and has a high cracking resistance, is studied. The mass loss of the composite material during oxidation is shown to be several orders of magnitude lower than that of molybdenum. Oxidation in quiet air at 1250°C for several hours weakly changes the strength of the composite material at temperatures from room temperature to 1300°C. It is also shown that the strength of the composite material as a function of the oxide matrix composition (Al: Y ratio) changes nonmonotonically. The maximum strength shifts from the Al 2 O 3 –Al 5 Y 3 O 12 eutectic point toward garnet.
ISSN:0036-0295
1555-6255
1531-8648
DOI:10.1134/S0036029516100116