Corrosion resistant ceramic materials

Patent · Tue Jul 23 04:00:00 EDT 1996

OSTI ID:264556

Kaun, T D

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.

• Research Organization: University of Chicago
• DOE Contract Number: W-31109-ENG-38
• Assignee: PTO; SCA: 360205; PA: EDB-96:121257; SN: 96001625910
• Patent Number(s): US 5,538,810/A/
• Application Number: PAN: 8-473,757
• OSTI ID: 264556
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALKALI METALS
ALUMINIUM SULFIDES
BARIUM SULFIDES
CALCIUM SULFIDES
CERAMICS
CERIUM SULFIDES
CORROSION RESISTANCE
GALLIUM SULFIDES
LANTHANUM SULFIDES
LITHIUM SULFIDES
MAGNESIUM SULFIDES
MOLTEN SALTS
POTASSIUM SULFIDES
SILICON SULFIDES
SODIUM SULFIDES
STRONTIUM SULFIDES
SULFIDES
SULFUR DIOXIDE
THERMODYNAMIC PROPERTIES
THIONYL CHLORIDES
YTTRIUM SULFIDES
ZIRCONIUM SULFIDES