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

Abstract

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.

Inventors:
; ;
Issue Date:
Research Org.:
Argonne National Lab., IL (USA)
OSTI Identifier:
6733126
Application Number:
ON: DE87007285
Assignee:
Dept. of Energy
DOE Contract Number:  
W-31-109-ENG-38
Resource Type:
Patent
Resource Relation:
Other Information: Portions of this document are illegible in microfiche products
Country of Publication:
United States
Language:
English
Subject:
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

Citation Formats

Singh, J P, James, J, and Picciolo, J J. Improved high temperature refractory. [MgCr/sub 2/O/sub 4/ composite with ZrO/sub 2/]. United States: N. p., 1985. Web.
Singh, J P, James, J, & Picciolo, J J. Improved high temperature refractory. [MgCr/sub 2/O/sub 4/ composite with ZrO/sub 2/]. United States.
Singh, J P, James, J, and Picciolo, J J. Tue . "Improved high temperature refractory. [MgCr/sub 2/O/sub 4/ composite with ZrO/sub 2/]". United States.
@article{osti_6733126,
title = {Improved high temperature refractory. [MgCr/sub 2/O/sub 4/ composite with ZrO/sub 2/]},
author = {Singh, J P and James, J and Picciolo, J J},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1985},
month = {12}
}