Resistance heating of the gasket in a gem-anvil high pressure cell
Autor(a) principal: | |
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Data de Publicação: | 1999 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/204822 |
Resumo: | Resistance heating of the gasket strip in a gem-anvil high pressure cell was successful in obtaining sample temperatures up to 1100 °C, under pressures up to 4.0 GPa. The heating capabilities, as well as the mechanical and chemical stability, of several different gasket strips ~two Ni-based alloys, Ta, Pt/Rh, and a Re/Mo alloy! with different design shapes, and two different single-crystal anvil materials ~diamond and cubic zirconia! were investigated. Two gasket-strip designs were found to provide optimum uniform heating conditions while decreasing the required current needed to achieve 1100 °C. Two anvil systems were investigated to reduce the temperature increase of the pressure cell body. Cubic zirconia anvils reduced the cell-body temperature to 100 °C at sample temperatures up to 1100 °C. However, zirconia anvils often failed during heating and almost always failed during cooling. Diamond anvils with cubic zirconia mounting plates also permitted temperatures up to 1100 °C to be reached without anvil failure. However, the cell-body temperature increased to 300 °C. A sealed vacuum-type chamber was employed to eliminate the problem with gasket and anvil oxidation. The optimized operating parameters reported here provide a routine method for high temperature-high pressure studies. The method was used to densify and sinter nanosize amorphous silicon nitride and g-alumina powders at high temperatures and high pressures. |
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Balzaretti, Naira MariaGonzalez, E.J.Piermarini, Gasper J.Russell, T.P.2020-01-23T04:04:45Z19990034-6748http://hdl.handle.net/10183/204822000055635Resistance heating of the gasket strip in a gem-anvil high pressure cell was successful in obtaining sample temperatures up to 1100 °C, under pressures up to 4.0 GPa. The heating capabilities, as well as the mechanical and chemical stability, of several different gasket strips ~two Ni-based alloys, Ta, Pt/Rh, and a Re/Mo alloy! with different design shapes, and two different single-crystal anvil materials ~diamond and cubic zirconia! were investigated. Two gasket-strip designs were found to provide optimum uniform heating conditions while decreasing the required current needed to achieve 1100 °C. Two anvil systems were investigated to reduce the temperature increase of the pressure cell body. Cubic zirconia anvils reduced the cell-body temperature to 100 °C at sample temperatures up to 1100 °C. However, zirconia anvils often failed during heating and almost always failed during cooling. Diamond anvils with cubic zirconia mounting plates also permitted temperatures up to 1100 °C to be reached without anvil failure. However, the cell-body temperature increased to 300 °C. A sealed vacuum-type chamber was employed to eliminate the problem with gasket and anvil oxidation. The optimized operating parameters reported here provide a routine method for high temperature-high pressure studies. The method was used to densify and sinter nanosize amorphous silicon nitride and g-alumina powders at high temperatures and high pressures.application/pdfengReview of Scientific Instruments. Woodbury. Vol. 70, no. 11 (Nov. 1999), p. 4316-4323DiamanteZircôniaAltas temperaturasAltas pressõesInstrumentaçãoResistance heating of the gasket in a gem-anvil high pressure cellEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT000055635.pdf.txt000055635.pdf.txtExtracted Texttext/plain39457http://www.lume.ufrgs.br/bitstream/10183/204822/2/000055635.pdf.txt7d509eedffdb147ceba56cc7835e0badMD52ORIGINAL000055635.pdfTexto completo (inglês)application/pdf421047http://www.lume.ufrgs.br/bitstream/10183/204822/1/000055635.pdfac03a64a641664285dc214d12754316aMD5110183/2048222023-08-23 03:29:00.80439oai:www.lume.ufrgs.br:10183/204822Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-08-23T06:29Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Resistance heating of the gasket in a gem-anvil high pressure cell |
title |
Resistance heating of the gasket in a gem-anvil high pressure cell |
spellingShingle |
Resistance heating of the gasket in a gem-anvil high pressure cell Balzaretti, Naira Maria Diamante Zircônia Altas temperaturas Altas pressões Instrumentação |
title_short |
Resistance heating of the gasket in a gem-anvil high pressure cell |
title_full |
Resistance heating of the gasket in a gem-anvil high pressure cell |
title_fullStr |
Resistance heating of the gasket in a gem-anvil high pressure cell |
title_full_unstemmed |
Resistance heating of the gasket in a gem-anvil high pressure cell |
title_sort |
Resistance heating of the gasket in a gem-anvil high pressure cell |
author |
Balzaretti, Naira Maria |
author_facet |
Balzaretti, Naira Maria Gonzalez, E.J. Piermarini, Gasper J. Russell, T.P. |
author_role |
author |
author2 |
Gonzalez, E.J. Piermarini, Gasper J. Russell, T.P. |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Balzaretti, Naira Maria Gonzalez, E.J. Piermarini, Gasper J. Russell, T.P. |
dc.subject.por.fl_str_mv |
Diamante Zircônia Altas temperaturas Altas pressões Instrumentação |
topic |
Diamante Zircônia Altas temperaturas Altas pressões Instrumentação |
description |
Resistance heating of the gasket strip in a gem-anvil high pressure cell was successful in obtaining sample temperatures up to 1100 °C, under pressures up to 4.0 GPa. The heating capabilities, as well as the mechanical and chemical stability, of several different gasket strips ~two Ni-based alloys, Ta, Pt/Rh, and a Re/Mo alloy! with different design shapes, and two different single-crystal anvil materials ~diamond and cubic zirconia! were investigated. Two gasket-strip designs were found to provide optimum uniform heating conditions while decreasing the required current needed to achieve 1100 °C. Two anvil systems were investigated to reduce the temperature increase of the pressure cell body. Cubic zirconia anvils reduced the cell-body temperature to 100 °C at sample temperatures up to 1100 °C. However, zirconia anvils often failed during heating and almost always failed during cooling. Diamond anvils with cubic zirconia mounting plates also permitted temperatures up to 1100 °C to be reached without anvil failure. However, the cell-body temperature increased to 300 °C. A sealed vacuum-type chamber was employed to eliminate the problem with gasket and anvil oxidation. The optimized operating parameters reported here provide a routine method for high temperature-high pressure studies. The method was used to densify and sinter nanosize amorphous silicon nitride and g-alumina powders at high temperatures and high pressures. |
publishDate |
1999 |
dc.date.issued.fl_str_mv |
1999 |
dc.date.accessioned.fl_str_mv |
2020-01-23T04:04:45Z |
dc.type.driver.fl_str_mv |
Estrangeiro info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/204822 |
dc.identifier.issn.pt_BR.fl_str_mv |
0034-6748 |
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000055635 |
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0034-6748 000055635 |
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http://hdl.handle.net/10183/204822 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Review of Scientific Instruments. Woodbury. Vol. 70, no. 11 (Nov. 1999), p. 4316-4323 |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
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