| Preparation of transparent Y2O3 ceramic by slip casting and vacuum sintering | |
| Alternative Title | Preparation of transparent Y2O3 ceramic by slip casting and vacuum sintering |
| Huo Di1; Zheng Yanchun2; Sun Xudong1; Li Xiaodong1; Liu Shaohong1 | |
| 2012 | |
| Source Publication | JOURNAL OF RARE EARTHS
 |
| ISSN | 1002-0721 |
| Volume | 30Issue:1Pages:57-62 |
| Abstract | In the present work transparent Y2O3 ceramics were made by slip casting and vacuum sintering of nanopowders with sodium polyacrylic acid (PAA-Na) as dispersant. The rheological properties of Y2O3 nanopowder slurry were investigated using different amounts of dispersant and solid contents. The microstructures and transmittance of the sintered ceramics were also studied by means of scanning electron microscopy (SEM) and ultra-violet visible spectrometry. The results showed that rheological behaviors of the Y2O3 nanopowder slurry were effectively promoted by sodium polyacrylic acid. Highly dispersive and stable slurries were obtained as the dispersant was added over 1.0 dwb% under the fixed conditions of pH 11 and 45 wt.% solid content. All the slip cast green bodies were sintered into highly dense ceramics after sintering at 1700 degrees C for 5 h in vacuum, wherein the sample added with 1.1% sodium polyacrylic acid exhibited the highest relative density of 99.36% and transmission of 30% at 800 nm wavelength. |
| Other Abstract | In the present work transparent Y_2O_3 ceramics were made by slip casting and vacuum sintering of nanopowders with sodium poly-acrylic acid(PAA-Na) as dispersant.The rheological properties of Y_2O_3 nanopowder slurry were investigated using different amounts of dis-persant and solid contents.The microstructures and transmittance of the sintered ceramics were also studied by means of scanning electron microscopy(SEM) and ultra-violet visible spectrometry.The results showed that rheological behaviors of the Y_2O_3 nanopowder slurry were effectively promoted by sodium polyacrylic acid.Highly dispersive and stable slurries were obtained as the dispersant was added over 1.0 dwb% under the fixed conditions of pH 11 and 45 wt.% solid content.All the slip cast green bodies were sintered into highly dense ceramics after sintering at 1700 oC for 5 h in vacuum,wherein the sample added with 1.1% sodium polyacrylic acid exhibited the highest relative den-sity of 99.36% and transmission of 30% at 800 nm wavelength. |
| Keyword | SUSPENSIONS STABILITY RELIABILITY ALUMINA YTTRIA nanopowders yttria slip casting transparent ceramic sodium polyacrylic acid rare earths |
| Indexed By | CSCD |
| Language | 英语 |
| Funding Project | [Liaoning Provincial Natural Science Foundation] ; [National Natural Science Foundation of China] |
| CSCD ID | CSCD:4443997 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/143801 |
| Collection | 中国科学院金属研究所 |
| Affiliation | 1.上海市地震局 2.中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | Huo Di,Zheng Yanchun,Sun Xudong,et al. Preparation of transparent Y2O3 ceramic by slip casting and vacuum sintering[J]. JOURNAL OF RARE EARTHS,2012,30(1):57-62. |
| APA | Huo Di,Zheng Yanchun,Sun Xudong,Li Xiaodong,&Liu Shaohong.(2012).Preparation of transparent Y2O3 ceramic by slip casting and vacuum sintering.JOURNAL OF RARE EARTHS,30(1),57-62. |
| MLA | Huo Di,et al."Preparation of transparent Y2O3 ceramic by slip casting and vacuum sintering".JOURNAL OF RARE EARTHS 30.1(2012):57-62. |
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