| Cu/Ag核壳复合粉末的制备与表征 |
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| 引用本文： | 赵科雄,席生岐,吴宏京,周敬恩.Cu/Ag核壳复合粉末的制备与表征[J].稀有金属材料与工程,2008,37(10). |
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| 作者姓名： | 赵科雄 席生岐 吴宏京 周敬恩 |
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| 作者单位： | 西安交通大学金属材料强度国家重点实验室,陕西,西安,710049 |
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| 基金项目： | 教育部高等学校博士学科点专项科研基金，新世纪优秀人才支持计划 |
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| 摘 要： | 综合直接镀银法与葡萄糖浴法两种工艺,在微米级Cu粉的表面得到了包覆完整的Ag层.通过对Cu/Ag核壳粉末的致密化处理,使Ag层中的孔隙大大减少,改善了复合粉的抗氧化性,同时提高了Cu核与Ag层之间的结合强度.用x射线衍射法、扫描电子显微镜观察和热重分析的方法对铜.银双金属粉进行了表征.用本工艺得到的Cu-Ag核壳粉末在790℃以下具有良好的抗氧化性.
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| 关 键 词： | 银 铜 核壳粉末 表面预处理 致密化处理 |
Preparation and Characterization of Core-Shell Copper/Silver Composite Bimetallic Powder |
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| Zhao Kexiong,Xi Shengqi,Wu Hongjing,Zhou Jingen.Preparation and Characterization of Core-Shell Copper/Silver Composite Bimetallic Powder[J].Rare Metal Materials and Engineering,2008,37(10). |
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| Authors: | Zhao Kexiong Xi Shengqi Wu Hongjing Zhou Jingen |
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| Abstract: | Intact silver shell on micron copper powder was obtained by the substitution reaction and the technique of dextrose bath. Densification process after dextrose bath reduced holes in silver layers markedly, and improved oxidation resistance of bimetallic powder prominently. The bonding strength between copper core and silver shell would be increased because of densification process. Cu-Ag bimetallic powders were characterized by XRD, SEM and TG analysis. The core-shell bimetallic powders exhibits excellent ox... |
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