During the film preparation process, the substrate can be selected according to the following force surface:
1. According to different application purposes, select Gold Show or Alloy, Glass, Ceramics and Plastic as a substrate;
2. The structure of the substrate material is corresponding to the film structure;
3. The substrate material matches the performance of the film to reduce thermal stress to prevent the thin film from falling off:
Consider market supply, price and difficulty in processing.
Principles of film selection:
① Chemical compatibility of substrates and film materials. The most ideal chemical compatibility means that during the preparation of the film, the interface performance does not degenerate, and the phases do not have harmful chemical reactions on the interface.
② physical compatibility of substrate and film materials. Physical compatibility mainly refers to the matching of the matrix and film materials in thermal expansion coefficient, elastic modulus, and the lattice coefficient. The result directly affects the distribution of residual stress inside the film material, and then affects the mechanical properties of the film.
–This article is released by vacuum coating machine manufacturer Guangdong Zhenhua
Post time: Feb-29-2024