Thermodynamics of grain boundary triple junctions

晶界三联结的热力学

• 批准号: 33708596
• 负责人: Professor Dr. Günter Gottstein
• 金额: --
• 依托单位: Institut für Metallkunde und Metallphysik (IMM)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2007
• 资助国家: 德国
• 起止时间: 2006-12-31 至 2010-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/33708596?language=en
• 关键词: Thermodynamics; grain; boundary; triple; junctions

It is proposed to measure the energy of a grain boundary triple junction line. This can be achieved by a measurement of the force equilibrium at a triple junction as established by the curvature of the adjourning grain boundary grooves at the root of the triple junction. A corresponding theoretical basis has been developed. The respective experiments can be conducted with an atomic force microscope, and first experiments were successful. Measurements will be performed on crystallographically defined triple junctions in specially grown tricrystals. First, pure metals will be investigated.

提出了一种测量晶界三结线能量的方法。这可以通过测量三重结处的力平衡来实现，所述三重结处的力平衡是由三重结根部的延缓晶界沟槽的曲率确定的。形成了相应的理论基础。各自的实验都可以用原子力显微镜进行，第一批实验是成功的。测量将在特殊生长的三晶体中的结晶学定义的三重结上进行。首先，将对纯金属进行调查。