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Title: Corrosion resistant ceramic materials

Ceramic materials are disclosed which exhibit stability in severely-corrosive environments having high alkali-metal activity, high sulfur/sulfide activity and/or molten halides at temperatures of 200--550 C or organic salt (including SO{sub 2} and SO{sub 2}Cl{sub 2}) at temperatures of 25--200 C. These sulfide ceramics form stoichiometric (single-phase) compounds with sulfides of Ca, Li, Na, K, Al, Mg, Si, Y, La, Ce, Ga, Ba, Zr and Sr and show melting-points that are sufficiently low and have excellent wettability with many metals (Fe, Ni, Mo) to easily form metal/ceramic seals. Ceramic compositions are also formulated to adequately match thermal expansion coefficient of adjacent metal components. 1 fig.
Inventors:
Issue Date:
OSTI Identifier:
264556
Assignee:
PTO; SCA: 360205; PA: EDB-96:121257; SN: 96001625910
Patent Number(s):
US 5,538,810/A/
Application Number:
PAN: 8-473,757
Contract Number:
W-31109-ENG-38
Resource Relation:
Other Information: PBD: 23 Jul 1996
Research Org:
Univ. of Chicago, IL (United States)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CERAMICS; CORROSION RESISTANCE; SULFIDES; ALKALI METALS; MOLTEN SALTS; SULFUR DIOXIDE; THIONYL CHLORIDES; THERMODYNAMIC PROPERTIES; CALCIUM SULFIDES; LITHIUM SULFIDES; SODIUM SULFIDES; POTASSIUM SULFIDES; ALUMINIUM SULFIDES; MAGNESIUM SULFIDES; SILICON SULFIDES; YTTRIUM SULFIDES; LANTHANUM SULFIDES; CERIUM SULFIDES; GALLIUM SULFIDES; BARIUM SULFIDES; ZIRCONIUM SULFIDES; STRONTIUM SULFIDES

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