| 添加剂对制备MLCC电极用超细铜粉形貌的影响 |
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| 引用本文： | 王崇国,胡敏艺,周康根. 添加剂对制备MLCC电极用超细铜粉形貌的影响[J]. 材料开发与应用, 2007, 22(1): 9-12 |
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| 作者姓名： | 王崇国 胡敏艺 周康根 |
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| 作者单位： | 中南大学冶金科学与工程学院,湖南,长沙,410083;中南大学冶金科学与工程学院,湖南,长沙,410083;中南大学冶金科学与工程学院,湖南,长沙,410083 |
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| 摘 要： | 采用葡萄糖预还原,后阶段以水合肼作为还原剂,在液相中还原CuSO4的方法制备超细铜粉。研究了聚乙烯吡咯烷酮(PVP)、NH4Cl、NaOH对超细铜粉粒度和形貌的影响。结果表明,制得的铜粉形貌呈球形,粒径均匀可控,分散性好。加入适量的PVP有助于超细铜粉粒径均匀和形貌规范;NH4Cl可使铜粉的粒径变小,当Cu与NH4Cl的摩尔比为1∶1时铜粉的形貌会由类球形向正方体转变;微量的NaOH能有效消除超细铜粉表面的棱峰,使铜粉的表面更圆滑,同时也可以使铜粉粒径变小。
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| 关 键 词： | 超细铜粉 添加剂 形貌 |
| 文章编号： | 1003-1545（2007）01-0009-04 |
| 修稿时间： | 2006-09-06 |
Effects of Additive Agent on the Morphology of Superfine Copper Powders for MLCC Electrode |
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| WANG Chong-guo,HU Min-yi,ZHOU Kang-gen. Effects of Additive Agent on the Morphology of Superfine Copper Powders for MLCC Electrode[J]. Development and Application of Materials, 2007, 22(1): 9-12 |
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| Authors: | WANG Chong-guo HU Min-yi ZHOU Kang-gen |
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| Affiliation: | College of Metallurgical Science and Engineering, Central South University, Changsha 410083, China |
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| Abstract: | The spheroid,uniform and well-dispersed superfine copper powder used in MLCC was prepared by using glucose and hydrazine hydrate to deoxidize CuSO_4 in acqueous solution.The effects of PVP,NH_4Cl and NaOH on copper powders are studied.The results show that an amount of PVP is beneficial to the uniformity and sphericity of copper powder and NH_4Cl has a great influence on the particle size and shape.With the amount of NH_4Cl increases,the copper particles become smaller,and when the value of n(Cu):n(NH_4Cl) is 1∶1,the copper particles become cuboid from spheroid.NaOH can effectively eliminate the wrinkle of copper particles,at the same time,the copper particles become smaller,too. |
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| Keywords: | Superfine copper powders Additive agent Morphology |
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