Effect of the particulate size on mechanical properties of alumina–zirconia composites
The effect of particulate size of alumina addition on mechanical properties of zirconia containing 3mol% Y2O3 (3Y-TZP) was investigated. Composites containing 15vol.% Al2O3 either as broken or as unbroken platelets ranging from 1 to 11μm were fabricated by hot isostatic pressing. Additions of Al2O3...
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| Veröffentlicht in: | Materials letters 2012-09, Vol.82, p.88-90 |
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| creator | García, D.E. Hotza, D. |
| description | The effect of particulate size of alumina addition on mechanical properties of zirconia containing 3mol% Y2O3 (3Y-TZP) was investigated. Composites containing 15vol.% Al2O3 either as broken or as unbroken platelets ranging from 1 to 11μm were fabricated by hot isostatic pressing. Additions of Al2O3 to YSZ resulted in enhanced fracture toughness with a trend to lower values of KIc with increasing platelet size. Observations of cracks produced by Vickers indentation and in-situ crack propagation studies lead to assume that the addition of Al2O3 enlarged the process zone size. The formation of elastic bridges was observed and is believed to be a contribution to the R-curve properties.
► Addition of Al2O3 broken platelets to YSZ results in increasing fracture toughness. ► An enhanced process zone size was formed. ► Crack deflection and elastic bridges were detected. ► Platelet size can be modified to optimize strength and toughness. |
| doi_str_mv | 10.1016/j.matlet.2012.05.076 |
| format | Article |
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► Addition of Al2O3 broken platelets to YSZ results in increasing fracture toughness. ► An enhanced process zone size was formed. ► Crack deflection and elastic bridges were detected. ► Platelet size can be modified to optimize strength and toughness.</description><identifier>ISSN: 0167-577X</identifier><identifier>EISSN: 1873-4979</identifier><identifier>DOI: 10.1016/j.matlet.2012.05.076</identifier><language>eng</language><publisher>Elsevier B.V</publisher><subject>Alumina ; Aluminum oxide ; CMC ; Composites ; Crack propagation ; Fracture mechanics ; Mechanical properties ; Particulate composites ; Platelets ; Reinforcement ; Tetragonal zirconia polycrystals ; Toughening ; Yttria stabilized zirconia ; Zirconia</subject><ispartof>Materials letters, 2012-09, Vol.82, p.88-90</ispartof><rights>2012 Elsevier B.V.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c339t-8b8573ad048160a76ce9c297600a0d526c440d0cd47cda537e8184296f9a8d143</citedby><cites>FETCH-LOGICAL-c339t-8b8573ad048160a76ce9c297600a0d526c440d0cd47cda537e8184296f9a8d143</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0167577X12007549$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids></links><search><creatorcontrib>García, D.E.</creatorcontrib><creatorcontrib>Hotza, D.</creatorcontrib><title>Effect of the particulate size on mechanical properties of alumina–zirconia composites</title><title>Materials letters</title><description>The effect of particulate size of alumina addition on mechanical properties of zirconia containing 3mol% Y2O3 (3Y-TZP) was investigated. Composites containing 15vol.% Al2O3 either as broken or as unbroken platelets ranging from 1 to 11μm were fabricated by hot isostatic pressing. Additions of Al2O3 to YSZ resulted in enhanced fracture toughness with a trend to lower values of KIc with increasing platelet size. Observations of cracks produced by Vickers indentation and in-situ crack propagation studies lead to assume that the addition of Al2O3 enlarged the process zone size. The formation of elastic bridges was observed and is believed to be a contribution to the R-curve properties.
► Addition of Al2O3 broken platelets to YSZ results in increasing fracture toughness. ► An enhanced process zone size was formed. ► Crack deflection and elastic bridges were detected. ► Platelet size can be modified to optimize strength and toughness.</description><subject>Alumina</subject><subject>Aluminum oxide</subject><subject>CMC</subject><subject>Composites</subject><subject>Crack propagation</subject><subject>Fracture mechanics</subject><subject>Mechanical properties</subject><subject>Particulate composites</subject><subject>Platelets</subject><subject>Reinforcement</subject><subject>Tetragonal zirconia polycrystals</subject><subject>Toughening</subject><subject>Yttria stabilized zirconia</subject><subject>Zirconia</subject><issn>0167-577X</issn><issn>1873-4979</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNp9kM1KxDAUhYMoOI6-gYsu3bTetGmSbgQZxh8YcKMwuxDTWyZD29QkFXTlO_iGPokd6trV3XzncO5HyCWFjALl1_us07HFmOVA8wzKDAQ_IgsqRZGySlTHZDFhIi2F2J6SsxD2AMAqYAuyXTcNmpi4Jok7TAbtozVjqyMmwX5i4vqkQ7PTvTW6TQbvBpwIDIeAbsfO9vrn6_vTeuN6qxPjusEFGzGck5NGtwEv_u6SvNytn1cP6ebp_nF1u0lNUVQxla-yFIWugUnKQQtusDJ5JTiAhrrMuWEMajA1E6bWZSFQUsnyijeVljVlxZJczb3TtrcRQ1SdDQbbVvfoxqAoFLIAKvkBZTNqvAvBY6MGbzvtPyZIHUSqvZpFqoNIBaWaRE6xmzmG0xvvFr0KxmJvsLZ-UqdqZ_8v-AXOVX_W</recordid><startdate>20120901</startdate><enddate>20120901</enddate><creator>García, D.E.</creator><creator>Hotza, D.</creator><general>Elsevier B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QF</scope><scope>7QQ</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20120901</creationdate><title>Effect of the particulate size on mechanical properties of alumina–zirconia composites</title><author>García, D.E. ; Hotza, D.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c339t-8b8573ad048160a76ce9c297600a0d526c440d0cd47cda537e8184296f9a8d143</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Alumina</topic><topic>Aluminum oxide</topic><topic>CMC</topic><topic>Composites</topic><topic>Crack propagation</topic><topic>Fracture mechanics</topic><topic>Mechanical properties</topic><topic>Particulate composites</topic><topic>Platelets</topic><topic>Reinforcement</topic><topic>Tetragonal zirconia polycrystals</topic><topic>Toughening</topic><topic>Yttria stabilized zirconia</topic><topic>Zirconia</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>García, D.E.</creatorcontrib><creatorcontrib>Hotza, D.</creatorcontrib><collection>CrossRef</collection><collection>Aluminium Industry Abstracts</collection><collection>Ceramic Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Materials letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>García, D.E.</au><au>Hotza, D.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of the particulate size on mechanical properties of alumina–zirconia composites</atitle><jtitle>Materials letters</jtitle><date>2012-09-01</date><risdate>2012</risdate><volume>82</volume><spage>88</spage><epage>90</epage><pages>88-90</pages><issn>0167-577X</issn><eissn>1873-4979</eissn><abstract>The effect of particulate size of alumina addition on mechanical properties of zirconia containing 3mol% Y2O3 (3Y-TZP) was investigated. Composites containing 15vol.% Al2O3 either as broken or as unbroken platelets ranging from 1 to 11μm were fabricated by hot isostatic pressing. Additions of Al2O3 to YSZ resulted in enhanced fracture toughness with a trend to lower values of KIc with increasing platelet size. Observations of cracks produced by Vickers indentation and in-situ crack propagation studies lead to assume that the addition of Al2O3 enlarged the process zone size. The formation of elastic bridges was observed and is believed to be a contribution to the R-curve properties.
► Addition of Al2O3 broken platelets to YSZ results in increasing fracture toughness. ► An enhanced process zone size was formed. ► Crack deflection and elastic bridges were detected. ► Platelet size can be modified to optimize strength and toughness.</abstract><pub>Elsevier B.V</pub><doi>10.1016/j.matlet.2012.05.076</doi><tpages>3</tpages></addata></record> |
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| ispartof | Materials letters, 2012-09, Vol.82, p.88-90 |
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| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | Alumina Aluminum oxide CMC Composites Crack propagation Fracture mechanics Mechanical properties Particulate composites Platelets Reinforcement Tetragonal zirconia polycrystals Toughening Yttria stabilized zirconia Zirconia |
| title | Effect of the particulate size on mechanical properties of alumina–zirconia composites |
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