Freeze drying vs microwave drying–methods for synthesis of sinteractive thoria powders
Thoria powders were synthesized by oxalate precipitation from an aqueous solution of the nitrate. The filtered precipitates were freeze dried or microwave dried before being calcined at 1073 K. The thoria powders obtained were characterized for crystallite size, specific surface area, bulk density,...
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| Veröffentlicht in: | Journal of nuclear materials 2017-02, Vol.484, p.51-58 |
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| container_title | Journal of nuclear materials |
| container_volume | 484 |
| creator | Annie, D. Chandramouli, V. Anthonysamy, S. Ghosh, Chanchal Divakar, R. |
| description | Thoria powders were synthesized by oxalate precipitation from an aqueous solution of the nitrate. The filtered precipitates were freeze dried or microwave dried before being calcined at 1073 K. The thoria powders obtained were characterized for crystallite size, specific surface area, bulk density, particle size distribution and residual carbon. Microstructure of the product was studied using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Sinterability of the synthesized powders was studied by measuring the density of the sintered compacts. Powders that can be consolidated and sintered to densities ∼96% theoretical density (TD) at 1773 K were obtained. |
| doi_str_mv | 10.1016/j.jnucmat.2016.11.019 |
| format | Article |
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The filtered precipitates were freeze dried or microwave dried before being calcined at 1073 K. The thoria powders obtained were characterized for crystallite size, specific surface area, bulk density, particle size distribution and residual carbon. Microstructure of the product was studied using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Sinterability of the synthesized powders was studied by measuring the density of the sintered compacts. Powders that can be consolidated and sintered to densities ∼96% theoretical density (TD) at 1773 K were obtained.</description><identifier>ISSN: 0022-3115</identifier><identifier>EISSN: 1873-4820</identifier><identifier>DOI: 10.1016/j.jnucmat.2016.11.019</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Aqueous solutions ; Bulk density ; Chemical precipitation ; Consolidation ; Density ; Electron microscopy ; Freeze drying ; Microstructure ; Microwave drying ; Nitrates ; Oxalic acid ; Particle size distribution ; Precipitates ; Precipitation ; Scanning electron microscopy ; Sinterability ; Sintered compacts ; Sintering ; Sintering (powder metallurgy) ; Size distribution ; Synthesis ; Theoretical density ; Thorium dioxide ; Transmission electron microscopy</subject><ispartof>Journal of nuclear materials, 2017-02, Vol.484, p.51-58</ispartof><rights>2016 Elsevier B.V.</rights><rights>Copyright Elsevier BV Feb 2017</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c374t-232e3f99b21aefd9717d732898848936eb168fef999dc4fc19a2fb1e79cf466b3</citedby><cites>FETCH-LOGICAL-c374t-232e3f99b21aefd9717d732898848936eb168fef999dc4fc19a2fb1e79cf466b3</cites><orcidid>0000-0001-5641-4673</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0022311516307036$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27903,27904,65309</link.rule.ids></links><search><creatorcontrib>Annie, D.</creatorcontrib><creatorcontrib>Chandramouli, V.</creatorcontrib><creatorcontrib>Anthonysamy, S.</creatorcontrib><creatorcontrib>Ghosh, Chanchal</creatorcontrib><creatorcontrib>Divakar, R.</creatorcontrib><title>Freeze drying vs microwave drying–methods for synthesis of sinteractive thoria powders</title><title>Journal of nuclear materials</title><description>Thoria powders were synthesized by oxalate precipitation from an aqueous solution of the nitrate. The filtered precipitates were freeze dried or microwave dried before being calcined at 1073 K. The thoria powders obtained were characterized for crystallite size, specific surface area, bulk density, particle size distribution and residual carbon. Microstructure of the product was studied using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Sinterability of the synthesized powders was studied by measuring the density of the sintered compacts. Powders that can be consolidated and sintered to densities ∼96% theoretical density (TD) at 1773 K were obtained.</description><subject>Aqueous solutions</subject><subject>Bulk density</subject><subject>Chemical precipitation</subject><subject>Consolidation</subject><subject>Density</subject><subject>Electron microscopy</subject><subject>Freeze drying</subject><subject>Microstructure</subject><subject>Microwave drying</subject><subject>Nitrates</subject><subject>Oxalic acid</subject><subject>Particle size distribution</subject><subject>Precipitates</subject><subject>Precipitation</subject><subject>Scanning electron microscopy</subject><subject>Sinterability</subject><subject>Sintered compacts</subject><subject>Sintering</subject><subject>Sintering (powder metallurgy)</subject><subject>Size distribution</subject><subject>Synthesis</subject><subject>Theoretical density</subject><subject>Thorium dioxide</subject><subject>Transmission electron microscopy</subject><issn>0022-3115</issn><issn>1873-4820</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNqFkM1KAzEUhYMoWKuPIARcz5ib-c1KpFgVCm4U3IWZzI3NYCc1SVvqynfwDX0SU1rXri738p1zOYeQS2ApMCiv-7QfVmrRhJTHNQVIGYgjMoK6ypK85uyYjBjjPMkAilNy5n3PGCsEK0bkdeoQP5F2bmuGN7r2dGGUs5tm_Xf7-fpeYJjbzlNtHfXbIczRG0-tpt4MAV2jgol4ZJxp6NJuOnT-nJzo5t3jxWGOycv07nnykMye7h8nt7NEZVUeEp5xzLQQLYcGdScqqLoq47Wo67wWWYktlLXGSIhO5VqBaLhuASuhdF6WbTYmV3vfpbMfK_RB9nblhvhSgogvWFlyEaliT8Vs3jvUcunMonFbCUzuSpS9PJQodyVKABlLjLqbvQ5jhLVBJ70yOCjsjEMVZGfNPw6_2U2APg</recordid><startdate>20170201</startdate><enddate>20170201</enddate><creator>Annie, D.</creator><creator>Chandramouli, V.</creator><creator>Anthonysamy, S.</creator><creator>Ghosh, Chanchal</creator><creator>Divakar, R.</creator><general>Elsevier B.V</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QQ</scope><scope>7SR</scope><scope>7ST</scope><scope>7TB</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>JG9</scope><scope>L7M</scope><scope>SOI</scope><orcidid>https://orcid.org/0000-0001-5641-4673</orcidid></search><sort><creationdate>20170201</creationdate><title>Freeze drying vs microwave drying–methods for synthesis of sinteractive thoria powders</title><author>Annie, D. ; 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The filtered precipitates were freeze dried or microwave dried before being calcined at 1073 K. The thoria powders obtained were characterized for crystallite size, specific surface area, bulk density, particle size distribution and residual carbon. Microstructure of the product was studied using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Sinterability of the synthesized powders was studied by measuring the density of the sintered compacts. Powders that can be consolidated and sintered to densities ∼96% theoretical density (TD) at 1773 K were obtained.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/j.jnucmat.2016.11.019</doi><tpages>8</tpages><orcidid>https://orcid.org/0000-0001-5641-4673</orcidid></addata></record> |
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| ispartof | Journal of nuclear materials, 2017-02, Vol.484, p.51-58 |
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| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | Aqueous solutions Bulk density Chemical precipitation Consolidation Density Electron microscopy Freeze drying Microstructure Microwave drying Nitrates Oxalic acid Particle size distribution Precipitates Precipitation Scanning electron microscopy Sinterability Sintered compacts Sintering Sintering (powder metallurgy) Size distribution Synthesis Theoretical density Thorium dioxide Transmission electron microscopy |
| title | Freeze drying vs microwave drying–methods for synthesis of sinteractive thoria powders |
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