Improved high temperature refractory. [MgCr/sub 2/O/sub 4/ composite with ZrO/sub 2/]

Patent · Tue Dec 10 00:00:00 EST 1985

OSTI ID:6733126

Singh, J P; James, J; Picciolo, J J

A high chromia refractory composite has been developed with improved thermal shock resistance and containing about 5 to 30 wt % of unstabilized ZrO/sub 2/ having a temperature-dependent phase change resulting in large expansion mismatch between the ZrO/sub 2/ and the chromia matrix which causes microcracks to form during cooling in the high chromia matrix. The particle size preferably is primarily between about 0.6 to 5 microns and particularly below about 3 microns with an average size in the order of 1.2 to 1.8 microns.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• DOE Contract Number: W-31-109-ENG-38
• Assignee: Dept. of Energy
• Application Number: ON: DE87007285
• OSTI ID: 6733126
• Resource Relation: Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COAL GASIFICATION PLANTS
LINERS
COMPOSITE MATERIALS
MECHANICAL PROPERTIES
ADDITIVES
CHROMIUM OXIDES
MAGNESIUM OXIDES
REFRACTORIES
THERMAL SHOCK
ZIRCONIUM OXIDES
ALKALINE EARTH METAL COMPOUNDS
CHALCOGENIDES
CHROMIUM COMPOUNDS
INDUSTRIAL PLANTS
MAGNESIUM COMPOUNDS
MATERIALS
OXIDES
OXYGEN COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM COMPOUNDS
360603* - Materials- Properties