Molybdenum-rare earth oxide alloy

by Izzy X. Product specialist

Molybdenum-rare earth oxide alloy (Mo-REO), also called rare earth molybdenum, is an alloy of molybdenum and rare earth element oxides, which is an oxide dispersion-strengthened alloy, similar to rare

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Commonly used rare earth element oxides are Y2O3, La2O3, CeO2, and Nd2O3, Sm2O3, Gd2O3, and Sc2O3.
They are usually added in the alloy in an amount of 0.5% -3.0% (mass fraction).
The rare earth oxide doped molybdenum is a new material that has been systematically researched since the late 1980s
The addition of rare earth oxides can not only significantly increase the strength of molybdenum, improve the high temperature resistance of molybdenum
It is an excellent high temperature structural material.

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Review on Molybdenum-rare earth oxide alloy

The molybdenum-rare earth oxide alloys are classified as follows:
Dispersion strengthened alloy
Unit system: Mo-La2O3, Mo-Y2O3, etc.
Multivariate: Mo-La2O3-Y2O3, Mo-Y2O3-Sc2O3
Precipitation strengthening + dispersion strengthening alloy:
TZM-La2O3, TZM-CeO2, TZM-Y2O3
TZC-CeO2, TZC-La2O3, TZC-Y2O3, TZC-CeO2-Y2O3
ZHM-Y2O3, ZHM-La2O3, ZHM-CeO2
At present, the most important molybdenum-rare-earth oxide alloy is Mo-La2O3, which systematically studies the fracture initiation, high-temperature strength, ductile transition temperature (DBTT), and the properties of the foil. Developed Mo-La2O3 (0.3-1.0%) high temperature resistant molybdenum, which is widely used in high temperature furnaces. This alloy has a higher use temperature than pure molybdenum and higher processability than TZM Molybdenum.

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