Yttria nanopowders with low degree of aggregation by a spray precipitation method
Highly sinterable Y2O3 nano-powder with low degree of agglomeration was synthesized by using a spray precipitation technology, without the use of any additives and dispersants. Compared with the precursor made by using the dripping method (D-precursor), the precursor made by the spraying method (S-p...
| Main Authors: | , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
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2020
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/142514 |
| _version_ | 1811689006400798720 |
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| author | Yin, Danlei Wang, Jun Liu, Peng Luo, Dewei Kong, Ling Bing Dong, Zhili Tang, Dingyuan |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Yin, Danlei Wang, Jun Liu, Peng Luo, Dewei Kong, Ling Bing Dong, Zhili Tang, Dingyuan |
| author_sort | Yin, Danlei |
| collection | NTU |
| description | Highly sinterable Y2O3 nano-powder with low degree of agglomeration was synthesized by using a spray precipitation technology, without the use of any additives and dispersants. Compared with the precursor made by using the dripping method (D-precursor), the precursor made by the spraying method (S-precursor) had much lower degree of hard agglomeration. So did the resultant calcined Y2O3 powder (S-Y2O3 powder) as compared with the D-Y2O3 powder. Sintering behaviors of the two powders were studied. Ceramics made from the S-Y2O3 powder (S-Y2O3 ceramics) showed much higher densification rate and final density. After vacuum sintered at 1650 °C for 5 h, relative density of the D-Y2O3 ceramics was merely 97.3%, while that of the S-Y2O3 ceramics reached 99.5%. In addition, the D-Y2O3 ceramics cannot be sintered to 98% relative density by using the vacuum sintering technique, due to the high degree of agglomeration of the D-Y2O3 powder. Moreover, the S-Y2O3 ceramic exhibited homogeneous microstructure and an in-line optical transmittance of 81.6% at 1200 nm after HIP treatment. The spray precipitation method should be applicable to synthesizing other oxide powders. |
| first_indexed | 2024-10-01T05:41:14Z |
| format | Journal Article |
| id | ntu-10356/142514 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:41:14Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1425142020-06-23T05:01:39Z Yttria nanopowders with low degree of aggregation by a spray precipitation method Yin, Danlei Wang, Jun Liu, Peng Luo, Dewei Kong, Ling Bing Dong, Zhili Tang, Dingyuan School of Electrical and Electronic Engineering School of Materials Science and Engineering Engineering::Materials Yttria Transparent Ceramics Co-precipitation Highly sinterable Y2O3 nano-powder with low degree of agglomeration was synthesized by using a spray precipitation technology, without the use of any additives and dispersants. Compared with the precursor made by using the dripping method (D-precursor), the precursor made by the spraying method (S-precursor) had much lower degree of hard agglomeration. So did the resultant calcined Y2O3 powder (S-Y2O3 powder) as compared with the D-Y2O3 powder. Sintering behaviors of the two powders were studied. Ceramics made from the S-Y2O3 powder (S-Y2O3 ceramics) showed much higher densification rate and final density. After vacuum sintered at 1650 °C for 5 h, relative density of the D-Y2O3 ceramics was merely 97.3%, while that of the S-Y2O3 ceramics reached 99.5%. In addition, the D-Y2O3 ceramics cannot be sintered to 98% relative density by using the vacuum sintering technique, due to the high degree of agglomeration of the D-Y2O3 powder. Moreover, the S-Y2O3 ceramic exhibited homogeneous microstructure and an in-line optical transmittance of 81.6% at 1200 nm after HIP treatment. The spray precipitation method should be applicable to synthesizing other oxide powders. 2020-06-23T05:01:39Z 2020-06-23T05:01:39Z 2018 Journal Article Yin, D., Wang, J., Liu, P., Luo, D., Kong, L. K., Dong, Z., & Tang, D. (2018). Yttria nanopowders with low degree of aggregation by a spray precipitation method. Ceramics International, 44(16), 20472-20477. doi:10.1016/j.ceramint.2018.08.042 0272-8842 https://hdl.handle.net/10356/142514 10.1016/j.ceramint.2018.08.042 2-s2.0-85051483851 16 44 20472 20477 en Ceramics International © 2018 Elsevier Ltd and Techna Group S.r.l. All rights reserved. |
| spellingShingle | Engineering::Materials Yttria Transparent Ceramics Co-precipitation Yin, Danlei Wang, Jun Liu, Peng Luo, Dewei Kong, Ling Bing Dong, Zhili Tang, Dingyuan Yttria nanopowders with low degree of aggregation by a spray precipitation method |
| title | Yttria nanopowders with low degree of aggregation by a spray precipitation method |
| title_full | Yttria nanopowders with low degree of aggregation by a spray precipitation method |
| title_fullStr | Yttria nanopowders with low degree of aggregation by a spray precipitation method |
| title_full_unstemmed | Yttria nanopowders with low degree of aggregation by a spray precipitation method |
| title_short | Yttria nanopowders with low degree of aggregation by a spray precipitation method |
| title_sort | yttria nanopowders with low degree of aggregation by a spray precipitation method |
| topic | Engineering::Materials Yttria Transparent Ceramics Co-precipitation |
| url | https://hdl.handle.net/10356/142514 |
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