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Control of nanosilver sintering attained through organic binder burnout

机译:通过有机粘合剂烧尽来控制纳米银烧结

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摘要

Control of the low-temperature sintering of nanosilver particles was attained by dispersing and stabilizing nanosilver particles into a paste form using the selected organic binder systems. As demonstrated by scanning electron microscopy (SEM) and thermogravimetric analysis (TGA), with the existing binder systems, undesirable premature coalescence of nanosilver particles was prevented and the metastable structure was retained until the binder burned out at relatively higher temperatures. Enhanced densification was achieved upon the binder burnout because at the relatively higher temperatures the densification mechanisms, e.g., grain-boundary or lattice diffusion, become more dominant. We propose that the onset of sintering, extent of densification, and final grain size can be controlled by either the size of the initial nanosilver particles or the binder systems with different burnout characteristics.
机译:通过使用选择的有机粘合剂体系将纳米银颗粒分散和稳定成糊状,可以控制纳米银颗粒的低温烧结。如通过扫描电子显微镜(SEM)和热重分析(TGA)所证明的,对于现有的粘合剂体系,可以防止纳米银粒子发生不希望的过早聚结,并保留亚稳结构,直到粘合剂在相对较高的温度下烧尽。在粘合剂烧尽时实现了增强的致密化,因为在相对较高的温度下,致密化机制(例如晶界或晶格扩散)变得更加占优势。我们建议可以通过初始纳米银颗粒的大小或具有不同燃尽特性的粘合剂体系来控制烧结的开始,致密化的程度以及最终的晶粒尺寸。

著录项

  • 来源
    《Journal of Materials Research》 |2007年第12期|p.3494-3500|共7页
  • 作者单位

    Center for Power Electronics Systems and Department of Materials Science and Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料学;
  • 关键词

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