铜包裹碳化硅颗粒复合粉体的化学原位沉积制备与表征

doi:10.3724/SP.J.1077.2012.11575

无机材料学报 ›› 2012, Vol. 27 ›› Issue (8): 795-799.DOI: 10.3724/SP.J.1077.2012.11575 CSTR: 32189.14.SP.J.1077.2012.11575

铜包裹碳化硅颗粒复合粉体的化学原位沉积制备与表征

石锦罡^{1, 2, 3}, 姚辉^{1, 2}, 陈名海¹, 刘宁², 李清文¹

(1. 中国科学院苏州纳米技术与纳米仿生研究所, 苏州215123; 2. 合肥工业大学材料科学与工程学院, 合肥230009; 3. 中国船舶重工集团公司第十二研究所, 兴平713102)

收稿日期:2011-09-09 修回日期:2011-11-24 出版日期:2012-08-20 网络出版日期:2012-07-09
作者简介:石锦罡(1984-), 男, 硕士研究生. E-mail: jgshi2009@sinano.ac.cn
基金资助:
江苏省产学研前瞻性联合研究项目(BY2009129); 江苏省基础研究计划(自然科学基金)项目(BK2009565); 苏州市科技项目(SWG0905)

Preparation and Characterization of Cu Coated SiC Composite Powders by in-situ Chemical Deposition

SHI Jin-Gang^1,2,3, YAO Hui^1,2, CHEN Ming-Hai¹, LIU Ning², LI Qing-Wen¹

(1. Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, Suzhou 215123, China; 2 School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China; 3. No. 12 Institute, China Shipbuilding Industry Corporation, Xingping 713102, China)

Received:2011-09-09 Revised:2011-11-24 Published:2012-08-20 Online:2012-07-09
About author:SHI Jin-Gang. E-mail: jgshi2009@sinano.ac.cn
Supported by:
Production and Research Collaborative Innovation Project of Jiangsu Province (BY2009129); Natural Science Foundation of Jiangsu Province (BK2009565); Suzhou Science and Technology Program (SWG0905)

摘要/Abstract

摘要： 以铜氨离子为铜源, 水合肼为还原剂, 在表面预氧化的SiC表面, 采用一步原位化学沉积法制备了均匀包裹Cu颗粒的SiC复合粉体. 采用扫描电子显微镜(SEM)、X射线衍射(XRD)、傅立叶红外光谱(FT-IR)、Zeta电位等测试表征手段研究了工艺条件对原位沉积反应的影响. 研究发现SiC表面预氧化形成的SiO2层能显著增强对铜氨离子吸附能力, 有助于原位还原生成单质Cu, 形成近乎连续包裹层. 控制反应体系中铜氨离子浓度和反应温度可以影响反应速率, 从而控制Cu颗粒的沉积速率和包裹效果. 对比研究表明, 在0.2 mol/L铜氨离子溶液中70℃反应, 在预氧化的SiC表面能够获得最佳包裹层.

关键词: SiC, Cu, 金属陶瓷复合材料, 原位化学沉积

Abstract: A facile one-step in-situ chemical deposition method was introduced to synthesize Cu-Coated SiC composite powders, using [Cu(NH₃)₄]²⁺ ions as copper source and N₂H₄·H₂O as reductant, respectively. Scanning electronic microscope (SEM), X-Ray diffraction (XRD), Fourier transform infrared spectroscope (FT-IR) and Zeta potential were used to investigate the structure, morphology and composition of the prepared core/shell composite powders. The corresponding formation mechanism was proposed based on the comparative study. It is revealed that the SiO₂ film on the surfaces of pre-oxidated SiC particles can effectively enhance the adsorption of [Cu(NH₃)₄]²⁺ ions toward the negatively charged surface, which is favorable to the following in-situ reduction by N₂H₄·H₂O around SiC particles. Nearly continuous Cu coating can be formed by changing the reaction process. The concentration of [Cu (NH₃)₄]²⁺ ions and reaction temperature affect the reaction rate and coating structure. The process parameters are optimized to obtain the best coating structure with [Cu(NH₃)₄]²⁺ ions concentration of 0.2 mol/L and reaction temperature of 70℃, respectively.

Key words: SiC, Cu, ceramic-metal composite, in-situ chemical deposition

中图分类号:

TB34

石锦罡, 姚辉, 陈名海, 刘宁, 李清文. 铜包裹碳化硅颗粒复合粉体的化学原位沉积制备与表征[J]. 无机材料学报, 2012, 27(8): 795-799.

SHI Jin-Gang, YAO Hui, CHEN Ming-Hai, LIU Ning, LI Qing-Wen. Preparation and Characterization of Cu Coated SiC Composite Powders by in-situ Chemical Deposition[J]. Journal of Inorganic Materials, 2012, 27(8): 795-799.

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铜包裹碳化硅颗粒复合粉体的化学原位沉积制备与表征

Preparation and Characterization of Cu Coated SiC Composite Powders by in-situ Chemical Deposition

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