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| 氧分压分析法鉴定(Bi,Pb)2Sr2Ca2Cu3Ox超导前驱粉性能 | |
| 引用本文： | 易汉平,张金芝,李明亚,刘婷,宋秀华,韩征和.氧分压分析法鉴定(Bi,Pb)2Sr2Ca2Cu3Ox超导前驱粉性能[J].金属热处理,2005,30(8):1-4. |
| 作者姓名： | 易汉平 张金芝 李明亚 刘婷 宋秀华 韩征和 |
| 作者单位： | 1. 清华大学,材料科学与工程系,北京,100084;北京英纳超导技术有限公司,北京,100176 2. 深圳市计量质量检测研究院,广东,深圳,518050 3. 清华大学,材料科学与工程系,北京,100084 4. 北京英纳超导技术有限公司,北京,100176 |
| 基金项目： | 国家科技部“863计划”（2002AA306113） |
| 摘 要： | 利用氧分压分析法对（Bi，Pb）2Sr2Ca2Cu3Ox。超导前驱粉的放氧量进行了定量计算，并考察了放氧量对Bi-2223带材临界电流密度Jc的影响。结果表明，前驱粉中富Pb相Ca2PbO4（简称CP）和（Bi，Pb）2Sr2Ca2Cu3Oy，（简称3221）的总量增加或CP相与3221相含量的比（CP：3221）下降，都导致放氧量增加。放氧量与Jc之间存在直接对应关系：当放氧量为0．32mL／g时带材的Jc最高，放氧量过高或过低均对Jc不利。相应地，可以通过定量计算前驱粉的放氧量预测带材的Jc进而鉴定前驱粉性能。 |
| 关 键 词： | （Bi Pb）2Sr2Ca2Cu3Ox前驱粉 氧分压分析法 放氧量 富Pb相 |
| 文章编号： | 0254-6051（2005）08-0001-04 |
| 收稿时间： | 2005-05-20 |
| 修稿时间： | 2005年5月20日 |
Performance Evaluation of(Bi,Pb)2Sr2Ca2Cu3Ox Superconducting Precursor Powder by Analysis of Oxygen Partial Pressure |
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| YI Han-ping,ZHANG Jin-zhi,LI Ming-ya,LIU Ting,SONG Xiu-hua,HAN Zheng-he.Performance Evaluation of(Bi,Pb)2Sr2Ca2Cu3Ox Superconducting Precursor Powder by Analysis of Oxygen Partial Pressure[J].Heat Treatment of Metals,2005,30(8):1-4. | |
| Authors: | YI Han-ping ZHANG Jin-zhi LI Ming-ya LIU Ting SONG Xiu-hua HAN Zheng-he |
| Affiliation: | YI Han-ping, ZHANG Jin-zhi, LI Ming-ya, LIU Ting, SONG Xiu-hua, HAN Zheng-he (1. Department of Materials Science |
| Abstract: | The oxygen release amount of(Bi,Pb)_2Sr_2Ca_2Cu_3O_x superconducting precursor powder was quantitatively calculated by means of oxygen partial pressure measurement method and its effect on the critical current density J_c of Bi-2223 tape was investigated.The results show that the oxygen release amount increased with increasing the amount of Pb-rich phases Ca_2PbO_4(CP)and(Pb,Bi)_3Sr_2Ca_2CuO_y(3221)or with decreasing the ratio of CP3221.The variation of J_c is corresponding with the oxygen release amount.J_c attains a maximum value when the oxygen release amount reaches a 0.32 mL/g,too high or too lower an oxygen release amount would,however,be detrimental to J_c.Correspondingly,the oxygen release amount may serve to evaluate the performance of the precursor powder. |
| Keywords: | (Bi Pb)_2Sr_2Ca_2Cu_3O_x precursor powder oxygen partial pressure measurement method oxygen release amount Pb-rich phases |
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