电铸Ni-CeO_2纳米复合材料的工艺研究  

Electro-forming Process of Ni-CeO_2 Nano-composites

作　　者：孙勇[1] 薛玉君[1] 李济顺[1] 吴明远[1] 

机构地区：[1]河南科技大学

出　　处：《特种铸造及有色合金》2006年第11期730-732,共3页Special Casting & Nonferrous Alloys

基　　金：清华大学摩擦学国家重点实验室开放基金资助项目(SKLT04-03);河南科技大学重大科学前期预研专项(2004ZD003);河南省高校创新人才基金资助项目(2005-16)

摘　　要：用电铸法制备了Ni-CeO2纳米复合材料,考察了镀液中CeO2纳米颗粒浓度、阴极电流密度、镀液温度对纳米复合材料中CeO2含量及纳米复合材料显微硬度的影响,对纳米复合材料的表面形貌进行了分析。结果表明,制备Ni-CeO2纳米复合材料的最佳工艺条件为纳米颗粒添加量为40g/L,阴极电流密度为4A/dm2,镀液温度为55℃,pH值为3.8;在最佳工艺条件下可得到CeO2质量分数为8.5%的Ni-CeO2纳米复合材料,其表面光滑平整、组织均匀致密,且显微硬度HV达到598,较纯镍有显著提高。Ni-CeO_2 nano-composites were prepared by an electro-forming method. Effects of CeO_2 particle concentration in electrolyte, cathode current density and electrolyte temperature on CeO_2 content in the composites and the micro-hardness of the composites have been investigated, and the surface morphology of the nano-composites has been observed. It is found that the optimized processing parameters for preparing Ni-CeO_2 nano-composites can be obtained including CeO_2 particle concentration of 40 g/L, cathode current density of 4 A/dm^2 and electrolyte temperature of 55 ℃ as well as pH value of 3.8. The nano-composites containing 8.5% CeO_2 content were prepared with the optimized processing parameters, which have smooth surface morphology and compact microstructure, and exhibit higher micro-hardness than those of the pure Ti, reaching 598 HV.

关 键 词：电铸 纳米复合材料 CEO2 纳米颗粒 

分 类 号：TB383.1[一般工业技术—材料科学与工程]