Since it requires energy to terminate the bonding, the surface is energetically less stable than the bulk This energy is known as the surface free energy. In the case of liquid interfaces, th energy is called surface tension 固体表面是固体材料防御化学腐蚀或机械损伤 的第一道防线,人们总是想方设法使固体的表面 钝化,使表面上不容易发生化学反应,以及通过 表面处理来提高材料的使用寿命和机械强度。 1111 Since it requires energy to terminate the bonding, the surface is energetically less stable than the bulk. This energy is known as the surface free energy. In the case of liquid interfaces, this energy is called surface tension. 固体表面是固体材料防御化学腐蚀或机械损伤 的第一道防线，人们总是想方设法使固体的表面 钝化，使表面上不容易发生化学反应，以及通过 表面处理来提高材料的使用寿命和机械强度