采用籽晶浸渗生长工艺和定向凝固技术(DSIG)可以制备具有良好取向的单畴YBCO块材.利用Y-211颗粒和液相预制体作为初始材料以浸渗生长工艺可以控制Y-123基体上的Y-211颗粒的尺寸和分布并且可以制备出近终形的块材.讨论了籽晶定向浸渗生长工艺的主要参数(浸渗结构、温度梯度和最高加工温度).另外,当液相为035时,Y-211颗粒掺杂的尺寸小于其它2种液相成分所得到的Y-211颗粒掺杂尺寸.
The seeded infiltration-growth process is an alternative to replace conventional melt processing techniques for the preparation of bulk YBa2Cu3O7-σ(Y-123) with finely dispersed small size of Y2BaCuO5(Y-211) particles. The directional solidification is also a quite effective technique to produce well-oriented cylinder grains. Well-oriented Y-123 bulks can be fabricated by combining seeded infiltration-growth and directional solidification technique (DSIG). The infiltration-growth process is able to control the size and distribution of Y-211 particles in the final Y-123 superconductor and can fabricate net-shape bulk. Y-211 particles and a liquid phase precursor. Were used as starting materials in the present investigation. The main parameters (temperature gradient, configuration and maximum processing temperature) of the directional seeded infiltration-growth process were discussed in the present paper. The result shows that Y-211 particle sizes upon using 035 liquid phase composition are smaller than those upon using other two liquid phase compositions.
参考文献
| [1] | Cardwell D A .[J].Materials Science and Engineering B,1998,53:1. |
| [2] | Chen Y L;Chart H M;Harmer M P et al.[J].Physica C,1994,234:232. |
| [3] | Fang H.;Ravi-Chandar K. .Fabrication of Y123 disk by the seeded infiltration and growth method[J].Physica, C. Superconductivity and its applications,2000(4):261-268. |
| [4] | Iida K;Babu N H;Withnell T D et al.[J].Physica C,2006,445-448:227. |
| [5] | Iida K;Babu N H;Shi Y et al.[J].Superconductor Science and Technology,2005,18:1421. |
| [6] | Babu N H;Rajasekharan T .[J].Journal of the American Ceramic Society,1999,82(11):2978. |
| [7] | Viswanath NVN.;Kumar NH.;Menon L.;Malik SK.;Rajasekharan T. .Infiltration-growth processing of SmBa2Cu3Oy superconductor[J].Superconductor Science & Technology,1998(4):420-425. |
| [8] | Iida K;Babu N H;Shi Y H et al.[J].Superconductor Science and Technology,2006,19:641. |
| [9] | Mathieu J P;Koutzarova T;Rulmont A et al.[J].Superconductor Science and Technology,2005,18:136. |
| [10] | Yang W M;Zhou L;Feng Y et al.[J].Journal of Alloys and Compounds,2006,415:216. |
| [11] | Meslin S;Iida K;Babu NH;Cardwell DA;Noudem JG .The effect of Y-211 precursor particle size on the microstructure and properties of Y-Ba-Cu-O bulk superconductors fabricated by seeded infiltration and growth[J].Superconductor Science & Technology,2006(8):711-718. |
| [12] | Yang W M;Zhou L;Feng Y et al.[J].Journal of Alloys and Compounds,2006,415:276. |
| [13] | Endo A;Chauhan H S;Egi T et al.[J].Materials Research,1996,11:795. |
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