TRANSPARENT NANOCRYSTALLINE BULK ALUMINA OBTAINED AT 7.7 GPa AND 800 C
Transparent nanocrystalline bulk alumina obtained at 7.7 GPa and 800 C had an average grain size of about 150 nm and an in-line transmission of 71% for a wavelength of 640 nm and a thickness of 0.8 mm. This is thought to be the lowest temperature at which highly transparent alumina has been obtained...
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| Veröffentlicht in: | Scripta materialia 2013-01, Vol.69 (5), p.362-365 |
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| creator | Nishiyama, N Taniguchi, T Ohfuji, H Yoshida, K Wakai, F Kim, B-N Yoshida, H Higo, Y Holzheid, A Beermann, O Irifune, T Sakka, Y Funakoshi, K-i |
| description | Transparent nanocrystalline bulk alumina obtained at 7.7 GPa and 800 C had an average grain size of about 150 nm and an in-line transmission of 71% for a wavelength of 640 nm and a thickness of 0.8 mm. This is thought to be the lowest temperature at which highly transparent alumina has been obtained. The values of microhardness and fracture toughness were 25.5 plus or minus 0.3 GPa and 2.9 plus or minus 0.3 MPa.m1/2, respectively. The hardness value was consistent with the previously determined Hall-Petch relation and fracture toughness was independent of grain size. |
| doi_str_mv | 10.1016/j.scriptamat.2013.05.017 |
| format | Article |
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The hardness value was consistent with the previously determined Hall-Petch relation and fracture toughness was independent of grain size.</description><subject>Aluminum oxide</subject><subject>Fracture toughness</subject><subject>Grain size</subject><subject>Hardness</subject><subject>Microhardness</subject><subject>Nanocrystals</subject><subject>Wavelengths</subject><issn>1359-6462</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><recordid>eNqFj7tOw0AURLcAiRD4hy1pbO71vsuN8yDCrCPHLqiiXeNIifIi6_w_lqCnGml0NDpDCEVIEVC-7tPYXneX3h99n2aALAWRAqo7MkImTCK5zB7IY4x7AJCY4YjM68q69cpWM1dTZ12ZV5_r2hbF0s3opCneqS2aj6WztJzUdiin1NZUpYouVp5aN6UagOZP5H7rD7F7_ssxaeazOn9LinKxzG2RnFBDn3TSc2-8kkJoIVWrQIdgskFrCx6DCJ1UX0YY5CGA9kwbCELIrZEeGCJnY_Lyu3u5nr9vXew3x11su8PBn7rzLW5QmowZNMP3f1HOjFJcc81-AD1ZVlw</recordid><startdate>20130101</startdate><enddate>20130101</enddate><creator>Nishiyama, N</creator><creator>Taniguchi, T</creator><creator>Ohfuji, H</creator><creator>Yoshida, K</creator><creator>Wakai, F</creator><creator>Kim, B-N</creator><creator>Yoshida, H</creator><creator>Higo, Y</creator><creator>Holzheid, A</creator><creator>Beermann, O</creator><creator>Irifune, T</creator><creator>Sakka, Y</creator><creator>Funakoshi, K-i</creator><scope>7QF</scope><scope>7QQ</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20130101</creationdate><title>TRANSPARENT NANOCRYSTALLINE BULK ALUMINA OBTAINED AT 7.7 GPa AND 800 C</title><author>Nishiyama, N ; Taniguchi, T ; Ohfuji, H ; Yoshida, K ; Wakai, F ; Kim, B-N ; Yoshida, H ; Higo, Y ; Holzheid, A ; Beermann, O ; Irifune, T ; Sakka, Y ; Funakoshi, K-i</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-n180t-e6a4a9a76558567c708bb92462f0a1b5be67d95914bb08a3890b556f96a031143</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>Aluminum oxide</topic><topic>Fracture toughness</topic><topic>Grain size</topic><topic>Hardness</topic><topic>Microhardness</topic><topic>Nanocrystals</topic><topic>Wavelengths</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Nishiyama, N</creatorcontrib><creatorcontrib>Taniguchi, T</creatorcontrib><creatorcontrib>Ohfuji, H</creatorcontrib><creatorcontrib>Yoshida, K</creatorcontrib><creatorcontrib>Wakai, F</creatorcontrib><creatorcontrib>Kim, B-N</creatorcontrib><creatorcontrib>Yoshida, H</creatorcontrib><creatorcontrib>Higo, Y</creatorcontrib><creatorcontrib>Holzheid, A</creatorcontrib><creatorcontrib>Beermann, O</creatorcontrib><creatorcontrib>Irifune, T</creatorcontrib><creatorcontrib>Sakka, Y</creatorcontrib><creatorcontrib>Funakoshi, K-i</creatorcontrib><collection>Aluminium Industry Abstracts</collection><collection>Ceramic Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Scripta materialia</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Nishiyama, N</au><au>Taniguchi, T</au><au>Ohfuji, H</au><au>Yoshida, K</au><au>Wakai, F</au><au>Kim, B-N</au><au>Yoshida, H</au><au>Higo, Y</au><au>Holzheid, A</au><au>Beermann, O</au><au>Irifune, T</au><au>Sakka, Y</au><au>Funakoshi, K-i</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>TRANSPARENT NANOCRYSTALLINE BULK ALUMINA OBTAINED AT 7.7 GPa AND 800 C</atitle><jtitle>Scripta materialia</jtitle><date>2013-01-01</date><risdate>2013</risdate><volume>69</volume><issue>5</issue><spage>362</spage><epage>365</epage><pages>362-365</pages><issn>1359-6462</issn><abstract>Transparent nanocrystalline bulk alumina obtained at 7.7 GPa and 800 C had an average grain size of about 150 nm and an in-line transmission of 71% for a wavelength of 640 nm and a thickness of 0.8 mm. 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| ispartof | Scripta materialia, 2013-01, Vol.69 (5), p.362-365 |
| issn | 1359-6462 |
| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | Aluminum oxide Fracture toughness Grain size Hardness Microhardness Nanocrystals Wavelengths |
| title | TRANSPARENT NANOCRYSTALLINE BULK ALUMINA OBTAINED AT 7.7 GPa AND 800 C |
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