反應合成AgCuO復合材料中CuO的長大動力學分析

周曉龍; 曹建春; 陳敬超; 黎敬濤; 于杰; 張昆華; 杜焰; 吳大平

doi:10.13374/j.issn1001-053x.2010.10.013

反應合成AgCuO復合材料中CuO的長大動力學分析

doi: 10.13374/j.issn1001-053x.2010.10.013

周曉龍^1,2,3,
曹建春¹,
陳敬超^2,3,
黎敬濤⁴,
于杰¹,
張昆華⁵,
杜焰^2,3,
吳大平^2,3

1. 昆明理工大學材料科學與工程學院, 昆明 650093;
2. 昆明理工大學稀貴及有色金屬先進材料教育部重點實驗室, 昆明 650093;
3. 昆明理工大學云南省新材料制備與加工重點實驗室, 昆明 650093;
4. 昆明理工大學信息工程與自動化學院, 昆明 650093;
5. 昆明貴金屬研究所, 昆明 650221

基金項目:

國家重點基礎研究發展計劃前期研究專項（No.2008CB617609）；國家自然科學基金資助項目（No.50361003）；云南省自然科學基金重點資助項目（No.2006E003Z,No.2004E0004Z）；云南省自然科學基金資助項目（No.2008CD087）

詳細信息

作者簡介:
周曉龍(1969-),男,副教授,博士,E-mail:kmzxlong@163.com

中圖分類號: TB333
計量
- 文章訪問數: 166
- HTML全文瀏覽量: 27
- PDF下載量: 6
- 被引次數: 0
出版歷程
- 收稿日期: 2009-11-27

Growth kinetics analysis of CuO in reactive synthesis AgCuO composites

1. School of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China;
2. Key Laboratory of Rare-Precious and Nonferrous Metal Advanced Materials(Ministry of Education), Kunming University of Science and Technology, Kunming 650093, China;
3. Yunnan Provincial Key Laboratory of Advanced Materials, Kunming University of Science and Technology, Kunming 650093, China;
4. School of Communication Engineering and Automatization, Kunming University of Science and Technology, Kunming 650093, China;
5. Kunming Institute of Precious Metals, Kunming 650221, China

摘要

摘要: 通過分析銀銅顆粒表面銅與氧的反應,計算銀銅合金中銅的沉淀析出量、銅在銀基體中的擴散速率以及CuO顆粒大小,研究了反應合成AgCuO復合材料中CuO的長大動力學行為.結果表明:在反應合成制備過程中,氧化銅顆粒長大動力學行為滿足拋物線規律;銀銅合金表面銅與氧的反應是一種銅擴散控制型反應,該氧化銅顆粒的長大與銅在銀銅合金中的含量、擴散速率和所處位置(晶內、晶界)有關.計算得到的CuO顆粒大小與實際獲得的氧化銅顆粒大小相吻合.
- 氧化銅 /
- 長大動力學 /
- 反應合成 /
- 銀 /
- 復合材料
Abstract: The growth kinetics behaviors of CuO particles in reactive synthesis AgCuO composites were investigated by analyzing the reaction of copper and oxygen on the surface of a silver-copper alloy and calculating the precipitation amount of copper in the silvercopper alloy, the diffusion rate of copper in silver matrix and the size of CuO particles. It is indicated that the growth kinetics of CuO particles in the reactive synthesis process follows a parabolic law, the reaction of copper and oxygen on the surface of the silver-copper alloy is controlled by copper diffusion, and the growth of CuO particles is influenced by the content, diffusion rate and location (grains or grain boundaries) of copper in the silver-copper alloy. The calculated size of copper oxide particles agrees with the measured one.
- copper oxides /
- growth kinetics /
- reactive synthesis /
- silver /
- composites