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无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

非均相沉淀制备Cu包裹纳米SiC复合粉体颗粒

张锐1,2; 高濂1; 郭景坤1   

  1. 1. 中国科学院上海硅酸盐研究所高性能陶瓷和超微结构国家重点实验室 上海 200050; 2. 郑州大学材料工程学院， 河南 450002
  • 收稿日期:2002-05-15 修回日期:2002-05-29 出版日期:2003-05-20 网络出版日期:2003-05-20

Preparation of Cu Coated Nano SiC Composite Particles by Heterogeneous Precipitation Process

ZHANG Rui1,2; GAO Lian1; GUO Jing-Kun1   

  1. 1. State Key Lab of High Performance Ceramics and Superfine Microstructure; Shanghai Institute of Ceramics; Chinese Academy of Sciences; Shanghai 200050; China; 2. Department of Materials science and Engineering; Zhengzhou University; Henan 450002; China
  • Received:2002-05-15 Revised:2002-05-29 Published:2003-05-20 Online:2003-05-20

PDF (PC)

1105

被引次数

64

摘要： 选用工业生产的立方相SiC纳米颗粒,尺寸约120nm,利用置换反应原理制得纳米Cu微晶。采用非均相沉淀方法将Cu包裹到纳米SiC颗粒表面,形成相分布均匀的复合颗粒,纳米Cu微晶吸附在SiC颗粒周围形成粗糙表面,复合粉体颗粒表面被一层连续、致密的Cu2O层所包覆,Cu2O的存在是纳米Cu微晶颗粒自发氧化的结果。

关键词: 包裹, Cu, SiC, 非均相沉淀

Abstract: Nano SiC particles in cubic structure were commercially available. The average diameter was about 120nm.
A heterogeneous precipitation process was regulated under 100℃. Nano Cu crystallites were attained based on cementation reaction. The coating of Cu on SiC was characterized by several
analysis methods to assess the coating quality as well as the phase distribution between Cu and SiC. Rough surface of the adherent nano Cu
crystallites is formed on the coated composite particles. A surface layer composed of Cu2O entrapped outside the coated composite particles. It
is the spontaneous oxidation of the nano Cu crystallites that leads to the existence of Cu2O.

Key words: coating, Cu, SiC, heterogeneous precipitation

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