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对影响真空冷焊的各种因素作了较全面的介绍.诸如表面污染的影响.包括氧化膜、吸附气体等;材料基本特性的影响.包括同种金属粘着.晶面、晶体结构.异种金属间的粘着、化学活性和金属键特性、硬度及合金元素等的影响;还有其它一些因素的影响.例如负载、接触时间和样品温度等.给出了许多典型验验结果.粘着是一种表面现象.金属间的粘着力本质上是界面间原子相互作用力的总和.通过对粘着的研究了解金属表面相原子相互作用的性质。了解诸如吸附、脱附、催化、氧化、腐蚀和降解等表面过程.测定超高真空及各种气氛条件下材料对偶之间的接触压力和粘着力.主要试验设备包括无油超高真空系统、测力机构及材料表面制备与分析设备等.最后对粘着机理进行了一般探讨.
The various factors that affect vacuum cold welding are described in more detail, such as the effects of surface contamination, including oxide films, adsorbed gases, etc. The basic properties of the material include the effects of the same type of metal adhesion, crystal facets, crystal structure, dissimilar metals Adhesion, chemical activity and metal bond properties, hardness and alloying elements, etc. There are other factors such as load, contact time and sample temperature, etc. Many typical test results are given. Adhesion is a Surface phenomenon. The intermetallic adhesion is essentially the sum of the interaction forces between the atoms in the interface. By studying the adhesion, we know the nature of the atomic interactions of metal surfaces. Understanding of surface processes such as adsorption, desorption, catalysis, oxidation, corrosion and degradation, etc. Measurement of contact pressure and adhesion between materials in the ultra-high vacuum and in various atmospheres.The main test equipment includes an oil-free ultra-high vacuum system, Force measuring mechanism and material surface preparation and analysis equipment, etc. Finally, the adhesion mechanism is discussed in general.