Joining system without heating and pressing

无需加热和加压的连接系统

• 批准号: 10555244
• 负责人: ONZAWA Tadao
• 金额: $ 4.03万
• 依托单位: Tokyo Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10555244/
• 关键词: adhesion; atomic force microscope; ultra high vacuum; molecular dynamics; chemical bond; interface; electronic spectroscopy; surface analysis; (1)凝着; (2)原子間力顕微鏡; (3)超高真空; (4)分子動力学; (5)結合状態; (6)界面; (7)電子分光; (8)表面分析

A force measurement system constructed in ultra high vacuum chamber of Auger electron spectroscope is used as a joining system without heating and pressing. The results are discussed with the continuum theory and the numerical analysis using molecular mechanics theory.Experiments were carried out in the elastic range. Samples were joined by adhesional interaction and the strength of joints were measured. It is same as the measurements of adhesional forces. After the measurements of adhesional forces, surfaces were observed by scanning electron microscope (SEM) and scanning Auger microscope (SAM).Although the atomic transfer between contacting samples was sometimes observed, there are some cases no transfer could observed by SAM. These results suggest the existence of exact reversible processes in Joining and Separation.In theoretical approach, theoretical strength of adhered object can be deduced by continuum theory. The solution is exact one and conventional theory and formula were found to be an approximation of it. At the limit when the size of atoms are not negligible, molecular mechanics becomes significant. The modified embedded atom method (MEAM) which is made for the bulk is found to have applicability to surface problems.

在超高真空室中构建的力测量系统将用作连接系统，而无需加热和压力。通过连续理论讨论结果，并使用分子力学理论进行数值分析。在弹性范围内进行了经验。通过粘附相互作用连接样品，并测量关节强度。它与粘附力的测量相同。在测量粘合力之后，通过扫描电子显微镜（SEM）和扫描螺旋钻显微镜（SAM）观察到表面。尽管有时会观察到接触样品之间的原子转移，但在某些情况下，SAM可以观察到某些情况。这些结果表明在连接和分离中存在确切的可逆过程。在理论方法中，可以通过连续理论推导粘附对象的理论强度。该解决方案是确切的，常规理论，公式被发现是其近似值。当原子的大小不可忽略时，分子力学变得很重要。发现用于散装的修饰的嵌入原子方法（MEAM）对表面问题具有适用性。