Sulfur containing refractory for resisting reactive molten metal

Details Sulfur containing refractory for resisting reactive molten metal Sulfur containing refractory for resisting reactive molten metal

1979-04-23

1981-01-13

Poer, James

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 62, 106 63, 106 65, 106 732, 106 734, C04B 3500

Patent

active

042447437

ABSTRACT:
Improved refractories for resisting attack of molten titanium aluminum and similar metals are provided by the inclusion of sulfur. Metal, oxygen, and sulfur combinations, wherein sulfur is present at from 10 to 60 atomic percent, are particularly useful.
Disclosed is a material having the atomic formula M.sub.a S.sub.b O.sub.c where O is oxygen, S is sulfur, and M is at least one metal selected from the scandium subgroup of the periodic table transition metals (scandium, yttrium and the rare earths) and aluminum. In an alternate material, M is comprised of at least two elements, the first selected as above and the second selected from the alkaline earth metal group. A preferred material is formed by mixing and firing CaS and Y.sub.2 O.sub.3 in proportions which results in (Ca+Y).sub.0.43 S.sub.0.14 O.sub.0.43.

REFERENCES:
patent: 3413232 (1968-11-01), Quinn
patent: 3490929 (1970-01-01), Layne et al.
patent: 3576765 (1971-04-01), Vallet et al.
patent: 4035819 (1977-07-01), Nitta et al.

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