Title: Near zero coefficient of thermal expansion of beta-eucryptite without microcracking

Abstract

The present invention is drawn to a lithia alumina silica material that exhibits a low CTE over a broad temperature range and a method of making the same. The low CTE of the material allows for a decrease in microcracking within the material.

Inventors:

Reimanis, Ivar; Ramalingam, Subramanian

Issue Date:

Tue Jun 16 00:00:00 EDT 2015

Research Org.:

Colorado School of Mines, Golden, CO (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1184761

Patent Number(s):

9056794

Application Number:

13/866,883

Assignee:

Reimanis, Ivar (Golden, CO)

Patent Classifications (CPCs):

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01P - INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS

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C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS

C01B33/26 - Aluminium-containing silicates {, i.e. silico-aluminates}

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01P - INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS

C01P2002/72 - by d-values or two theta-values, e.g. as X-ray diagram
C01P2004/03 - obtained by SEM

C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA

C04B2235/3203 - Lithium oxide or oxide-forming salts thereof
C04B2235/3205 - Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
C04B2235/3217 - Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
C04B2235/3222 - Aluminates other than alumino-silicates, e.g. spinel
C04B2235/3224 - Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
C04B2235/3284 - Zinc oxides, zincates, cadmium oxides, cadmiates, mercury oxides, mercurates or oxide forming salts thereof
C04B2235/3418 - Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
C04B2235/441 - Alkoxides, e.g. methoxide, tert-butoxide
C04B2235/442 - Carbonates
C04B2235/443 - Nitrates or nitrites
C04B2235/446 - Sulfides, tellurides or selenides
C04B2235/447 - Phosphates or phosphites
C04B2235/5436 - micrometer sized, i.e. from 1 to 100 micron
C04B2235/6565 - Cooling rate
C04B2235/6567 - Treatment time
C04B2235/6581 - Total pressure below 1 atmosphere, e.g. vacuum
C04B2235/77 - Density
C04B2235/80 - Phases present in the sintered or melt-cast ceramic products other than the main phase
C04B2235/81 - Materials characterised by the absence of phases other than the main phase, i.e. single phase materials
C04B2235/9607 - Thermal properties, e.g. thermal expansion coefficient
C04B35/19 - Alkali metal aluminosilicates, e.g. spodumene
C04B35/624 - Sol-gel processing
C04B35/62635 - {Mixing details}
C04B35/6264 - {Mixing media, e.g. organic solvents}
C04B35/62655 - {Drying, e.g. freeze-drying, spray-drying, microwave or supercritical drying}
C04B35/62675 - {characterised by the treatment temperature}
C04B35/62685 - {characterised by the order of addition of constituents or additives}
C04B35/645 - Pressure sintering

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DOE Contract Number:  

FG02-07ER46397

Resource Type:

Patent

Resource Relation:

Patent File Date: 2013 Apr 19

Country of Publication:

United States

Language:

English

Subject:

36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY