Since a mutual diffusion between adhesive layer and matrix and a innerstress on interfaces exist,there is a optimal thickness of adhesive layer in composites.

由于粘接层和基体的相互扩散以及界面的存在，材料中存在一个最佳的粘接层。

Streak cathod method which is a kind of qualitative method for measuring the innerstress of deposits was introduced.A semi-quantitative calculating formula for the innerstress was given.

简单介绍了镀层的一种定性测定方法-条形阴极法,并列出了其半定量的计算公式。