透明YAG多晶陶瓷具有优良的光学、力学与化学性能,逐渐成为新一代固体激光基质材料.分散均匀、团聚轻的纳米粉体有利于制备出高度透明的激光陶瓷.以Y2O3、Al(NO3)3·9H2O和柠檬酸为原料,采用柠檬酸-凝胶燃烧法制备出黑色粉体,经1100℃烧结出尺寸小于50nm的YAG粉体.采用TG-DTA、XRD、FT-IR和TEM测试手段对YAG纳米粉体进行表征,采用谢莱公式计算出不同烧结温度下的晶粒尺寸.研究结果表明:YAG的析晶温度范围为850～900℃,烧结过程中出现赝YAG相物质,1050℃转变成纯YAG相,随着热处理温度的升高,晶粒呈线性增长,纳米粉体的TEM尺寸和采用谢莱公式计算的结果相一致.
参考文献
| [1] | Jianren Lu .Development of Nd: YAG ceramics lasers[J].Advanced Solid-State Lasers,2002,68:507-517. |
| [2] | Ikesue A.;Kamata K.;Furusato I. .FABRICATION OF POLYCRYSTALLINE, TRANSPARENT YAG CERAMICS BY A SOLID-STATE REACTION METHOD[J].Journal of the American Ceramic Society,1995(1):225-228. |
| [3] | Nyman May .Comparison of solid-state and spray pyrolysissynthesis of yttrium aluminate powders[J].Journal of the American Ceramic Society,1997,80(05):1231-1238. |
| [4] | Hay R S .Phase transformation and micro-structure evolution in sol-gel derived yttrium-aluminum garnet films[J].Journal of Materials Research,1993,8(03):578-604. |
| [5] | A.K. Pradhan;Kai Zhang;G.B. Loutts .Synthesis of neodymium-doped yttrium aluminum garnet (YAG) nanocrystalline powders leading to transparent ceramics[J].Materials Research Bulletin: An International Journal Reporting Research on Crystal Growth and Materials Preparation and Characterization,2004(issue 9):1291-1298. |
| [6] | 张芳,秦小梅,修稚萌,由健,孙旭东.钇铝硝酸盐共熔制备YAG微粉[J].功能材料,2002(01):88-89. |
| [7] | PECHINI M P .Method of preparing lead and alkaline earth titanate and niobates and coating method using the same to form a capacitor[P].US 330697,1967-07-11. |
| [8] | Ramanathan S .Processing and characterization of combustion synthesized YAG powders[J].Ceramics International,2003,29:477-484. |
| [9] | MICHAEL K .Cinibulk synthesis of yttrium aluminum garnet from a mixed-metal citrate precursor[J].Journal of the American Ceramic Society,1997,83(05):1276-1278. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%