Ceramic component for electrodes

Details Ceramic component for electrodes Ceramic component for electrodes

1978-06-14

1979-12-25

Parr, E. Suzanne

Compositions

Electrically conductive or emissive compositions

Metal compound containing

106732, 310 11, H01B 108

Patent

active

041804848

ABSTRACT:
A ceramic component suitable for preparing MHD generator electrodes consists of HfO.sub.2 and sufficient Tb.sub.4 O.sub.7 to stabilize at least 60 volume percent of the HfO.sub.2 into the cubic structure. The ceramic component may also contain a small amount of PrO.sub.2, Yb.sub.2 O.sub.3 or a mixture of both to improve stability and electronic conductivity of the electrode. The component is highly resistant to corrosion by molten potassium seed and molten coal slag in the MHD fluid and exhibits both ionic and electronic conductivity.

REFERENCES:
patent: 4093879 (1978-06-01), Marchant et al.
patent: 4128776 (1978-12-01), Boquist et al.

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