Liquid phase sintering and microstructure–property relationships of silicon carbide ceramics with oxynitride additives
SiC ceramics incorporating sintering additives from the system AlN–Y 2O 3 and having variable α-SiC/β-SiC, AlN/Y 2O 3 ratios and additive contents were gas-pressure sintered to theoretical density. Post-sintering heat treatments were performed in order to induce phase transformations from β-SiC to α...
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Veröffentlicht in: | Materials chemistry and physics 2001-01, Vol.67 (1), p.180-191 |
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container_title | Materials chemistry and physics |
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creator | Biswas, K Rixecker, G Wiedmann, I Schweizer, M Upadhyaya, G.S Aldinger, F |
description | SiC ceramics incorporating sintering additives from the system AlN–Y
2O
3 and having variable α-SiC/β-SiC, AlN/Y
2O
3 ratios and additive contents were gas-pressure sintered to theoretical density. Post-sintering heat treatments were performed in order to induce phase transformations from β-SiC to α-SiC and anisotropic grain growth, leading to platelet-strengthened microstructures. The indentation fracture toughness of the platelet materials reaches values in excess of
6
MPa
m
1/2
after annealing at 1950°C. Four-point bending strengths were measured at room temperature and at high temperatures, and were correlated with microstructural data obtained by scanning electron microscopy and X-ray powder diffraction. Both the kinetics of the phase transformation/platelet formation and the strength retention at high temperature were found to exhibit maxima as a function of the AlN/Y
2O
3 ratio in the sintering additive. |
doi_str_mv | 10.1016/S0254-0584(00)00437-5 |
format | Article |
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2O
3 and having variable α-SiC/β-SiC, AlN/Y
2O
3 ratios and additive contents were gas-pressure sintered to theoretical density. Post-sintering heat treatments were performed in order to induce phase transformations from β-SiC to α-SiC and anisotropic grain growth, leading to platelet-strengthened microstructures. The indentation fracture toughness of the platelet materials reaches values in excess of
6
MPa
m
1/2
after annealing at 1950°C. Four-point bending strengths were measured at room temperature and at high temperatures, and were correlated with microstructural data obtained by scanning electron microscopy and X-ray powder diffraction. Both the kinetics of the phase transformation/platelet formation and the strength retention at high temperature were found to exhibit maxima as a function of the AlN/Y
2O
3 ratio in the sintering additive.</description><identifier>ISSN: 0254-0584</identifier><identifier>EISSN: 1879-3312</identifier><identifier>DOI: 10.1016/S0254-0584(00)00437-5</identifier><identifier>CODEN: MCHPDR</identifier><language>eng</language><publisher>Lausanne: Elsevier B.V</publisher><subject>Ceramics ; Cross-disciplinary physics: materials science; rheology ; Exact sciences and technology ; Materials science ; Materials synthesis; materials processing ; Mechanical properties ; Microstructure ; Physics ; Powder processing: powder metallurgy, compaction, sintering, mechanical alloying, and granulation ; Silicon carbide ; Sintering</subject><ispartof>Materials chemistry and physics, 2001-01, Vol.67 (1), p.180-191</ispartof><rights>2001 Elsevier Science B.V.</rights><rights>2001 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c366t-2278802c70dd24a133f02885ce54154a8da22a3c01afb1b1d28ef997b7b987733</citedby><cites>FETCH-LOGICAL-c366t-2278802c70dd24a133f02885ce54154a8da22a3c01afb1b1d28ef997b7b987733</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/S0254-0584(00)00437-5$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>309,310,314,780,784,789,790,3550,23930,23931,25140,27924,27925,45995</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=859113$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Biswas, K</creatorcontrib><creatorcontrib>Rixecker, G</creatorcontrib><creatorcontrib>Wiedmann, I</creatorcontrib><creatorcontrib>Schweizer, M</creatorcontrib><creatorcontrib>Upadhyaya, G.S</creatorcontrib><creatorcontrib>Aldinger, F</creatorcontrib><title>Liquid phase sintering and microstructure–property relationships of silicon carbide ceramics with oxynitride additives</title><title>Materials chemistry and physics</title><description>SiC ceramics incorporating sintering additives from the system AlN–Y
2O
3 and having variable α-SiC/β-SiC, AlN/Y
2O
3 ratios and additive contents were gas-pressure sintered to theoretical density. Post-sintering heat treatments were performed in order to induce phase transformations from β-SiC to α-SiC and anisotropic grain growth, leading to platelet-strengthened microstructures. The indentation fracture toughness of the platelet materials reaches values in excess of
6
MPa
m
1/2
after annealing at 1950°C. Four-point bending strengths were measured at room temperature and at high temperatures, and were correlated with microstructural data obtained by scanning electron microscopy and X-ray powder diffraction. Both the kinetics of the phase transformation/platelet formation and the strength retention at high temperature were found to exhibit maxima as a function of the AlN/Y
2O
3 ratio in the sintering additive.</description><subject>Ceramics</subject><subject>Cross-disciplinary physics: materials science; rheology</subject><subject>Exact sciences and technology</subject><subject>Materials science</subject><subject>Materials synthesis; materials processing</subject><subject>Mechanical properties</subject><subject>Microstructure</subject><subject>Physics</subject><subject>Powder processing: powder metallurgy, compaction, sintering, mechanical alloying, and granulation</subject><subject>Silicon carbide</subject><subject>Sintering</subject><issn>0254-0584</issn><issn>1879-3312</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2001</creationdate><recordtype>article</recordtype><recordid>eNqFkM9u1DAQhy0EEkvhEZAsISE4BMZ2vHZOCFVQkFbiAJwtx56wg7JJajtt98Y78IY8SZNu1SunOcz3mz8fYy8FvBMgtu-_g9R1BdrWbwDeAtTKVPoR2whrmkopIR-zzQPylD3L-TeAMEKoDbvZ0eVMkU97n5FnGgomGn5xP0R-oJDGXNIcypzw35-_UxonTOXIE_a-0DjkPU2Zj90S7CmMAw8-tRSRB0x-iWd-TWXPx5vjQCWtDR8jFbrC_Jw96Xyf8cV9PWM_P3_6cf6l2n27-Hr-cVcFtd2WSkpjLchgIEZZe6FUB9JaHVDXQtfeRi-lVwGE71rRiigtdk1jWtM21hilztjr09zl-MsZc3EHygH73g84ztnJrTFWgF5AfQLXp3PCzk2JDj4dnQC3enZ3nt0q0QG4O89uzb26X-Bz8H2X_BAoP4StbhbRC_XhROHy6xVhcjkQDgEjJQzFxZH-s-cWepSVQw</recordid><startdate>20010101</startdate><enddate>20010101</enddate><creator>Biswas, K</creator><creator>Rixecker, G</creator><creator>Wiedmann, I</creator><creator>Schweizer, M</creator><creator>Upadhyaya, G.S</creator><creator>Aldinger, F</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope></search><sort><creationdate>20010101</creationdate><title>Liquid phase sintering and microstructure–property relationships of silicon carbide ceramics with oxynitride additives</title><author>Biswas, K ; Rixecker, G ; Wiedmann, I ; Schweizer, M ; Upadhyaya, G.S ; Aldinger, F</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c366t-2278802c70dd24a133f02885ce54154a8da22a3c01afb1b1d28ef997b7b987733</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2001</creationdate><topic>Ceramics</topic><topic>Cross-disciplinary physics: materials science; rheology</topic><topic>Exact sciences and technology</topic><topic>Materials science</topic><topic>Materials synthesis; materials processing</topic><topic>Mechanical properties</topic><topic>Microstructure</topic><topic>Physics</topic><topic>Powder processing: powder metallurgy, compaction, sintering, mechanical alloying, and granulation</topic><topic>Silicon carbide</topic><topic>Sintering</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Biswas, K</creatorcontrib><creatorcontrib>Rixecker, G</creatorcontrib><creatorcontrib>Wiedmann, I</creatorcontrib><creatorcontrib>Schweizer, M</creatorcontrib><creatorcontrib>Upadhyaya, G.S</creatorcontrib><creatorcontrib>Aldinger, F</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Materials chemistry and physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Biswas, K</au><au>Rixecker, G</au><au>Wiedmann, I</au><au>Schweizer, M</au><au>Upadhyaya, G.S</au><au>Aldinger, F</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Liquid phase sintering and microstructure–property relationships of silicon carbide ceramics with oxynitride additives</atitle><jtitle>Materials chemistry and physics</jtitle><date>2001-01-01</date><risdate>2001</risdate><volume>67</volume><issue>1</issue><spage>180</spage><epage>191</epage><pages>180-191</pages><issn>0254-0584</issn><eissn>1879-3312</eissn><coden>MCHPDR</coden><abstract>SiC ceramics incorporating sintering additives from the system AlN–Y
2O
3 and having variable α-SiC/β-SiC, AlN/Y
2O
3 ratios and additive contents were gas-pressure sintered to theoretical density. Post-sintering heat treatments were performed in order to induce phase transformations from β-SiC to α-SiC and anisotropic grain growth, leading to platelet-strengthened microstructures. The indentation fracture toughness of the platelet materials reaches values in excess of
6
MPa
m
1/2
after annealing at 1950°C. Four-point bending strengths were measured at room temperature and at high temperatures, and were correlated with microstructural data obtained by scanning electron microscopy and X-ray powder diffraction. Both the kinetics of the phase transformation/platelet formation and the strength retention at high temperature were found to exhibit maxima as a function of the AlN/Y
2O
3 ratio in the sintering additive.</abstract><cop>Lausanne</cop><pub>Elsevier B.V</pub><doi>10.1016/S0254-0584(00)00437-5</doi><tpages>12</tpages></addata></record> |
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source | Elsevier ScienceDirect Journals Complete |
subjects | Ceramics Cross-disciplinary physics: materials science rheology Exact sciences and technology Materials science Materials synthesis materials processing Mechanical properties Microstructure Physics Powder processing: powder metallurgy, compaction, sintering, mechanical alloying, and granulation Silicon carbide Sintering |
title | Liquid phase sintering and microstructure–property relationships of silicon carbide ceramics with oxynitride additives |
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