Alkaline glaze - Revision history

MDerrick at 14:33, 26 April 2022

2022-04-26T14:33:42Z

← Older revision		Revision as of 10:33, 26 April 2022
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	[[File:1997.10-SC2740.jpg\|thumb\|]]		[[File:1997.10-SC2740.jpg\|thumb\|Stoneware jar<br>MFA# 1997.10]]
	== Description ==		== Description ==

	A [[ceramic%20glaze\|ceramic glaze]] that has an alkaline flux, such as [[borax\|borax]], [[potash\|potash]], or [[soda%20ash\|soda ash]] (Mayer 1969). Alkaline glazes can produce brilliant colors, such as Egyptian blue, using low temperature firing. However, the alkali materials are often hygroscopic resulting in lumpy, poorly dispersed suspensions. In addition, if the composition contains too much alkali, the glaze maybe susceptible to crazing. A typical composition for an alkaline glaze is: [[alumina\|alumina]] (10-15%), [[silica\|silica]] (30-70%), potash (up to 15%), [[lime\|lime]] (up to 15%) with variable small quantities of [[iron%20oxide%20red\|iron oxide]], [[magnesia\|magnesia]], and phosphates (Hodges, 1988).		A [[ceramic%20glaze\|ceramic glaze]] that has an alkaline flux, such as [[borax\|borax]], [[potash\|potash]], or [[soda%20ash\|soda ash]] (Mayer 1969). Alkaline glazes can produce brilliant colors, such as Egyptian blue, using low temperature firing. However, the alkali materials are often hygroscopic resulting in lumpy, poorly dispersed suspensions. In addition, if the composition contains too much alkali, the glaze maybe susceptible to crazing. A typical composition for an alkaline glaze is: [[alumina\|alumina]] (10-15%), [[silica\|silica]] (30-70%), potash (up to 15%), [[lime\|lime]] (up to 15%) with variable small quantities of [[iron%20oxide%20red\|iron oxide]], [[magnesia\|magnesia]], and phosphates (Hodges, 1988).

	[[File:50.951a-SC98518.jpg\|thumb\|]]		[[File:50.951a-SC98518.jpg\|thumb\|Korean burial urn<br>MFA# 50.951]]

	== Synonyms and Related Terms ==		== Synonyms and Related Terms ==
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	soda-lime glaze; glaçure alcaline (Fr.); alkalisch glazuur (Ned.); vidrado alcalino (Port.); soda lime glaze; potash-lime glaze, ash glaze; kiln ash glaze; salt glaze		soda-lime glaze; glaçure alcaline (Fr.); alkalisch glazuur (Ned.); vidrado alcalino (Port.); soda lime glaze; potash-lime glaze, ash glaze; kiln ash glaze; salt glaze

	== ~~Additional Information ==~~		==Resources and Citations==

	~~° R. Mayer, ''A Dictionary of Art Terms~~ and ~~Techniques'', Harper and Row, New York, 1969. ° H.Hodges, ''Artifacts: An Introduction to Early Materials and Technology'', Ronald P. Frye, Kingston, Canada 1988.~~

	~~== Sources Checked for Data in Record~~ ==

	* Ralph Mayer, ''A Dictionary of Art Terms and Techniques'', Harper and Row Publishers, New York, 1969 (also 1945 printing)		* Ralph Mayer, ''A Dictionary of Art Terms and Techniques'', Harper and Row Publishers, New York, 1969 (also 1945 printing)

Jruggiero: Text replace - "== Authority ==" to "== Sources Checked for Data in Record =="

2016-04-29T18:15:04Z

Text replace - "== Authority ==" to "== Sources Checked for Data in Record =="

← Older revision		Revision as of 14:15, 29 April 2016
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	° R. Mayer, ''A Dictionary of Art Terms and Techniques'', Harper and Row, New York, 1969. ° H.Hodges, ''Artifacts: An Introduction to Early Materials and Technology'', Ronald P. Frye, Kingston, Canada 1988.		° R. Mayer, ''A Dictionary of Art Terms and Techniques'', Harper and Row, New York, 1969. ° H.Hodges, ''Artifacts: An Introduction to Early Materials and Technology'', Ronald P. Frye, Kingston, Canada 1988.

	== ~~Authority~~ ==		== Sources Checked for Data in Record ==

	* Ralph Mayer, ''A Dictionary of Art Terms and Techniques'', Harper and Row Publishers, New York, 1969 (also 1945 printing)		* Ralph Mayer, ''A Dictionary of Art Terms and Techniques'', Harper and Row Publishers, New York, 1969 (also 1945 printing)

GEthier: /* Description */

2014-01-07T15:46:09Z

Description

← Older revision		Revision as of 11:46, 7 January 2014
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	== Description ==		== Description ==

	A [~~http://cameo.mfa.org/materials/fullrecord.asp?name=~~ceramic%20glaze ceramic glaze] that has an alkaline flux, such as [~~http://cameo.mfa.org/materials/fullrecord.asp?name=~~borax borax], [~~http://cameo.mfa.org/materials/fullrecord.asp?name=~~potash potash], or [~~http://cameo.mfa.org/materials/fullrecord.asp?name=~~soda%20ash soda ash] (Mayer 1969). Alkaline glazes can produce brilliant colors, such as Egyptian blue, using low temperature firing. However, the alkali materials are often hygroscopic resulting in lumpy, poorly dispersed suspensions. In addition, if the composition contains too much alkali, the glaze maybe susceptible to crazing. A typical composition for an alkaline glaze is: [~~http://cameo.mfa.org/materials/fullrecord.asp?name=~~alumina alumina] (10-15%), [~~http://cameo.mfa.org/materials/fullrecord.asp?name=~~silica silica] (30-70%), potash (up to 15%), [~~http://cameo.mfa.org/materials/fullrecord.asp?name=~~lime lime] (up to 15%) with variable small quantities of [~~http://cameo.mfa.org/materials/fullrecord.asp?name=~~iron%20oxide%20red iron oxide], [~~http://cameo.mfa.org/materials/fullrecord.asp?name=~~magnesia magnesia], and phosphates (Hodges, 1988).		A [[ceramic%20glaze\|ceramic glaze]] that has an alkaline flux, such as [[borax\|borax]], [[potash\|potash]], or [[soda%20ash\|soda ash]] (Mayer 1969). Alkaline glazes can produce brilliant colors, such as Egyptian blue, using low temperature firing. However, the alkali materials are often hygroscopic resulting in lumpy, poorly dispersed suspensions. In addition, if the composition contains too much alkali, the glaze maybe susceptible to crazing. A typical composition for an alkaline glaze is: [[alumina\|alumina]] (10-15%), [[silica\|silica]] (30-70%), potash (up to 15%), [[lime\|lime]] (up to 15%) with variable small quantities of [[iron%20oxide%20red\|iron oxide]], [[magnesia\|magnesia]], and phosphates (Hodges, 1988).

	[[File:50.951a-SC98518.jpg\|thumb\|]]		[[File:50.951a-SC98518.jpg\|thumb\|]]

	== Synonyms and Related Terms ==		== Synonyms and Related Terms ==

Unknown user at 12:35, 24 July 2013

2013-07-24T12:35:35Z

← Older revision		Revision as of 08:35, 24 July 2013
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	== Description ==		== Description ==

	A [http://cameo.mfa.org/materials/fullrecord.asp?name=ceramic ~~glaze~~ ceramic glaze] that has an alkaline flux, such as [http://cameo.mfa.org/materials/fullrecord.asp?name=borax borax], [http://cameo.mfa.org/materials/fullrecord.asp?name=potash potash], or [http://cameo.mfa.org/materials/fullrecord.asp?name=soda ~~ash~~ soda ash] (Mayer 1969). Alkaline glazes can produce brilliant colors, such as Egyptian blue, using low temperature firing. However, the alkali materials are often hygroscopic resulting in lumpy, poorly dispersed suspensions. In addition, if the composition contains too much alkali, the glaze maybe susceptible to crazing. A typical composition for an alkaline glaze is: [http://cameo.mfa.org/materials/fullrecord.asp?name=alumina alumina] (10-15%), [http://cameo.mfa.org/materials/fullrecord.asp?name=silica silica] (30-70%), potash (up to 15%), [http://cameo.mfa.org/materials/fullrecord.asp?name=lime lime] (up to 15%) with variable small quantities of [http://cameo.mfa.org/materials/fullrecord.asp?name=iron ~~oxide red~~ iron oxide], [http://cameo.mfa.org/materials/fullrecord.asp?name=magnesia magnesia], and phosphates (Hodges, 1988).		A [http://cameo.mfa.org/materials/fullrecord.asp?name=ceramic%20glaze ceramic glaze] that has an alkaline flux, such as [http://cameo.mfa.org/materials/fullrecord.asp?name=borax borax], [http://cameo.mfa.org/materials/fullrecord.asp?name=potash potash], or [http://cameo.mfa.org/materials/fullrecord.asp?name=soda%20ash soda ash] (Mayer 1969). Alkaline glazes can produce brilliant colors, such as Egyptian blue, using low temperature firing. However, the alkali materials are often hygroscopic resulting in lumpy, poorly dispersed suspensions. In addition, if the composition contains too much alkali, the glaze maybe susceptible to crazing. A typical composition for an alkaline glaze is: [http://cameo.mfa.org/materials/fullrecord.asp?name=alumina alumina] (10-15%), [http://cameo.mfa.org/materials/fullrecord.asp?name=silica silica] (30-70%), potash (up to 15%), [http://cameo.mfa.org/materials/fullrecord.asp?name=lime lime] (up to 15%) with variable small quantities of [http://cameo.mfa.org/materials/fullrecord.asp?name=iron%20oxide%20red iron oxide], [http://cameo.mfa.org/materials/fullrecord.asp?name=magnesia magnesia], and phosphates (Hodges, 1988).

	[[File:50.951a-SC98518.jpg\|thumb\|]]		[[File:50.951a-SC98518.jpg\|thumb\|]]
	== Synonyms and Related Terms ==		== Synonyms and Related Terms ==

	soda-lime glaze; ~~glaure~~ alcaline (Fr.); alkalisch glazuur (Ned.); vidrado alcalino (Port.); soda lime glaze; potash-lime glaze, ash glaze; kiln ash glaze; salt glaze		soda-lime glaze; glaçure alcaline (Fr.); alkalisch glazuur (Ned.); vidrado alcalino (Port.); soda lime glaze; potash-lime glaze, ash glaze; kiln ash glaze; salt glaze

	== Additional Information ==		== Additional Information ==

	R. Mayer, ''A Dictionary of Art Terms and Techniques'', Harper and Row, New York, 1969. H.Hodges, ''Artifacts: An Introduction to Early Materials and Technology'', Ronald P. Frye, Kingston, Canada 1988.		° R. Mayer, ''A Dictionary of Art Terms and Techniques'', Harper and Row, New York, 1969. ° H.Hodges, ''Artifacts: An Introduction to Early Materials and Technology'', Ronald P. Frye, Kingston, Canada 1988.

	== Authority ==		== Authority ==

	* ~~Ralph Mayer,~~ Ralph Mayer, ''A Dictionary of Art Terms and Techniques'', Harper and Row Publishers, New York, 1969 (also 1945 printing)		* Ralph Mayer, ''A Dictionary of Art Terms and Techniques'', Harper and Row Publishers, New York, 1969 (also 1945 printing)

	* ~~Henry Hodges,~~ Henry Hodges, ''Artifacts: An Introduction to Early Materials and Technology'', Ronald P. Frye, Kingston, Canada, 1988		* Henry Hodges, ''Artifacts: An Introduction to Early Materials and Technology'', Ronald P. Frye, Kingston, Canada, 1988

	* ~~Robert Fournier,~~ Robert Fournier, ''Illustrated Dictionary of Practical Pottery'', Chilton Book Company, Radnor, PA, 1992		* Robert Fournier, ''Illustrated Dictionary of Practical Pottery'', Chilton Book Company, Radnor, PA, 1992

	* Art and Architecture Thesaurus Online, http://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000		* Art and Architecture Thesaurus Online, http://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000

Unknown user at 18:13, 27 April 2013

2013-04-27T18:13:37Z

New page

[[File:1997.10-SC2740.jpg|thumb|]]
== Description ==

A [http://cameo.mfa.org/materials/fullrecord.asp?name=ceramic glaze ceramic glaze] that has an alkaline flux, such as [http://cameo.mfa.org/materials/fullrecord.asp?name=borax borax], [http://cameo.mfa.org/materials/fullrecord.asp?name=potash potash], or [http://cameo.mfa.org/materials/fullrecord.asp?name=soda ash soda ash] (Mayer 1969). Alkaline glazes can produce brilliant colors, such as Egyptian blue, using low temperature firing. However, the alkali materials are often hygroscopic resulting in lumpy, poorly dispersed suspensions. In addition, if the composition contains too much alkali, the glaze maybe susceptible to crazing. A typical composition for an alkaline glaze is: [http://cameo.mfa.org/materials/fullrecord.asp?name=alumina alumina] (10-15%), [http://cameo.mfa.org/materials/fullrecord.asp?name=silica silica] (30-70%), potash (up to 15%), [http://cameo.mfa.org/materials/fullrecord.asp?name=lime lime] (up to 15%) with variable small quantities of [http://cameo.mfa.org/materials/fullrecord.asp?name=iron oxide red iron oxide], [http://cameo.mfa.org/materials/fullrecord.asp?name=magnesia magnesia], and phosphates (Hodges, 1988).

[[File:50.951a-SC98518.jpg|thumb|]]
== Synonyms and Related Terms ==

soda-lime glaze; glaure alcaline (Fr.); alkalisch glazuur (Ned.); vidrado alcalino (Port.); soda lime glaze; potash-lime glaze, ash glaze; kiln ash glaze; salt glaze

== Additional Information ==

R. Mayer, ''A Dictionary of Art Terms and Techniques'', Harper and Row, New York, 1969. H.Hodges, ''Artifacts: An Introduction to Early Materials and Technology'', Ronald P. Frye, Kingston, Canada 1988.

== Authority ==

* Ralph Mayer, Ralph Mayer, ''A Dictionary of Art Terms and Techniques'', Harper and Row Publishers, New York, 1969 (also 1945 printing)

* Henry Hodges, Henry Hodges, ''Artifacts: An Introduction to Early Materials and Technology'', Ronald P. Frye, Kingston, Canada, 1988

* Robert Fournier, Robert Fournier, ''Illustrated Dictionary of Practical Pottery'', Chilton Book Company, Radnor, PA, 1992

* Art and Architecture Thesaurus Online, http://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000

[[Category:Materials database]]