Making Alumina Microcomponents From Al Powder
Alumina microcomponents have distinguishing advantages over Si counterparts. However, the shrinkage of alumina, as high as 20%, makes it difficult to produce precision components that require a high tolerance. A new fabrication process is presented to greatly reduce the shrinkage. The process consis...
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| Veröffentlicht in: | Materials science forum 2007-01, Vol.534-536, p.1041-1044 |
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| container_title | Materials science forum |
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| creator | Jiang, Kyle Davies, G.J. Chang, I.T.H. Kim, J.S. Falticeanu, C. Lucien |
| description | Alumina microcomponents have distinguishing advantages over Si counterparts.
However, the shrinkage of alumina, as high as 20%, makes it difficult to produce precision
components that require a high tolerance. A new fabrication process is presented to greatly reduce
the shrinkage. The process consists of forming an Al powdered component through sintering and
transforming the Al powdered component into an alumina part. In this way, the shrinkage occurring
in sintering the Al powder component will be compensated by the expansion occurred when Al
transforms into alumina. The process involves producing micro-moulds, preparing metallic paste,
filling the micro-moulds with the metallic paste, demoulding, sintering the green Al patterns and
finally oxidising the sintered Al-based components to achieve alumina components. The process
was proven successful. Characterization of the sintered alumina microcomponents has been
undertaken, including SEM image analysis, density and scale measurements. |
| doi_str_mv | 10.4028/www.scientific.net/MSF.534-536.1041 |
| format | Article |
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However, the shrinkage of alumina, as high as 20%, makes it difficult to produce precision
components that require a high tolerance. A new fabrication process is presented to greatly reduce
the shrinkage. The process consists of forming an Al powdered component through sintering and
transforming the Al powdered component into an alumina part. In this way, the shrinkage occurring
in sintering the Al powder component will be compensated by the expansion occurred when Al
transforms into alumina. The process involves producing micro-moulds, preparing metallic paste,
filling the micro-moulds with the metallic paste, demoulding, sintering the green Al patterns and
finally oxidising the sintered Al-based components to achieve alumina components. The process
was proven successful. Characterization of the sintered alumina microcomponents has been
undertaken, including SEM image analysis, density and scale measurements.</description><identifier>ISSN: 0255-5476</identifier><identifier>ISSN: 1662-9752</identifier><identifier>EISSN: 1662-9752</identifier><identifier>DOI: 10.4028/www.scientific.net/MSF.534-536.1041</identifier><language>eng</language><publisher>Trans Tech Publications Ltd</publisher><ispartof>Materials science forum, 2007-01, Vol.534-536, p.1041-1044</ispartof><rights>2007 Trans Tech Publications Ltd</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c299t-169ef54e001b0c361532992419ec705bc9e35482e60917fa63efce523174a5723</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Uhttps://www.scientific.net/Image/TitleCover/49?width=600</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids></links><search><creatorcontrib>Jiang, Kyle</creatorcontrib><creatorcontrib>Davies, G.J.</creatorcontrib><creatorcontrib>Chang, I.T.H.</creatorcontrib><creatorcontrib>Kim, J.S.</creatorcontrib><creatorcontrib>Falticeanu, C. Lucien</creatorcontrib><title>Making Alumina Microcomponents From Al Powder</title><title>Materials science forum</title><description>Alumina microcomponents have distinguishing advantages over Si counterparts.
However, the shrinkage of alumina, as high as 20%, makes it difficult to produce precision
components that require a high tolerance. A new fabrication process is presented to greatly reduce
the shrinkage. The process consists of forming an Al powdered component through sintering and
transforming the Al powdered component into an alumina part. In this way, the shrinkage occurring
in sintering the Al powder component will be compensated by the expansion occurred when Al
transforms into alumina. The process involves producing micro-moulds, preparing metallic paste,
filling the micro-moulds with the metallic paste, demoulding, sintering the green Al patterns and
finally oxidising the sintered Al-based components to achieve alumina components. The process
was proven successful. Characterization of the sintered alumina microcomponents has been
undertaken, including SEM image analysis, density and scale measurements.</description><issn>0255-5476</issn><issn>1662-9752</issn><issn>1662-9752</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><recordid>eNqVkE1LAzEQhoMoWKv_YU9eZLf53s2xFKtCi4J6Dmmc1dTdpCa7FP-9KRU8exgGZl4eZh6EbgiuOKbNbL_fV8k68INrna08DLP187ISjJeCyYpgTk7QhEhJS1ULeoommApRCl7Lc3SR0hZjRhoiJ6hcm0_n34t5N_bOm2LtbAw29LvgMz0Vyxj6vCyewv4N4iU6a02X4Oq3T9Hr8vZlcV-uHu8eFvNVaalSQ0mkglZwwJhssGWSCJbnlBMFtsZiYxUwwRsKEitSt0YyaC0IykjNjagpm6LrI3cXw9cIadC9Sxa6zngIY9JUSVXzhuXg4hjMV6cUodW76HoTvzXB-qBKZ1X6T5XOqnRWpbOqXFIfVGXK7ZEyROPTAPZDb8MYfX7xX5wf7ad65A</recordid><startdate>20070101</startdate><enddate>20070101</enddate><creator>Jiang, Kyle</creator><creator>Davies, G.J.</creator><creator>Chang, I.T.H.</creator><creator>Kim, J.S.</creator><creator>Falticeanu, C. Lucien</creator><general>Trans Tech Publications Ltd</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QF</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20070101</creationdate><title>Making Alumina Microcomponents From Al Powder</title><author>Jiang, Kyle ; Davies, G.J. ; Chang, I.T.H. ; Kim, J.S. ; Falticeanu, C. Lucien</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c299t-169ef54e001b0c361532992419ec705bc9e35482e60917fa63efce523174a5723</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2007</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Jiang, Kyle</creatorcontrib><creatorcontrib>Davies, G.J.</creatorcontrib><creatorcontrib>Chang, I.T.H.</creatorcontrib><creatorcontrib>Kim, J.S.</creatorcontrib><creatorcontrib>Falticeanu, C. Lucien</creatorcontrib><collection>CrossRef</collection><collection>Aluminium Industry Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Materials science forum</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Jiang, Kyle</au><au>Davies, G.J.</au><au>Chang, I.T.H.</au><au>Kim, J.S.</au><au>Falticeanu, C. Lucien</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Making Alumina Microcomponents From Al Powder</atitle><jtitle>Materials science forum</jtitle><date>2007-01-01</date><risdate>2007</risdate><volume>534-536</volume><spage>1041</spage><epage>1044</epage><pages>1041-1044</pages><issn>0255-5476</issn><issn>1662-9752</issn><eissn>1662-9752</eissn><abstract>Alumina microcomponents have distinguishing advantages over Si counterparts.
However, the shrinkage of alumina, as high as 20%, makes it difficult to produce precision
components that require a high tolerance. A new fabrication process is presented to greatly reduce
the shrinkage. The process consists of forming an Al powdered component through sintering and
transforming the Al powdered component into an alumina part. In this way, the shrinkage occurring
in sintering the Al powder component will be compensated by the expansion occurred when Al
transforms into alumina. The process involves producing micro-moulds, preparing metallic paste,
filling the micro-moulds with the metallic paste, demoulding, sintering the green Al patterns and
finally oxidising the sintered Al-based components to achieve alumina components. The process
was proven successful. Characterization of the sintered alumina microcomponents has been
undertaken, including SEM image analysis, density and scale measurements.</abstract><pub>Trans Tech Publications Ltd</pub><doi>10.4028/www.scientific.net/MSF.534-536.1041</doi><tpages>4</tpages><oa>free_for_read</oa></addata></record> |
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| title | Making Alumina Microcomponents From Al Powder |
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