Both SiC and molybdenum disilicide (MoSi2) form protective silica-glass surface layers, which protect them from oxidation in oxidizing atmospheres. MoSi2 is a semimetal with a high conductivity. Lanthanum chromite (LaCr2O4) is a small polaron conductor; substituting alkaline-earth ions (e.g., calcium, or Ca2+) for La3+ results in an equal…
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