What happens when the alloy film evaporates?

Evaporation of alloy film materials may lead to the following problems:

The deposition rate of 1. is unstable: due to the different vapor pressures of different metal elements in the alloy film, it is difficult to maintain a uniform deposition rate during evaporation. This may lead to different compositions in different regions of the film, thus affecting its performance.

2. The alloy composition deviates from the target value: the composition of the alloy film material is usually designed according to the specific application requirements. If there is a problem in the evaporation process, the alloy composition may deviate from the target value, thus affecting the performance of the film.

3. Slow deposition rate: Due to the complex structure and composition of alloy film materials, the deposition rate is usually slow, and it takes more time and resources to obtain a film with sufficient thickness.

4. Cracking and wrinkling: During the evaporation process, alloy film materials may be affected by thermal stress and mechanical stress, resulting in film cracking and wrinkling.