Review on Spray Coating Techniques

A vast array of plating processes, the substances through which different plating can be applied with the natural intention of saving the component, shape and the outer layer that are left unprotected to any kind of physical, chemical and also mechanical adversities. Thus, Spray pyrolysis is very efficient, cost effective, and utilizes simple equipment. Spray pyrolysis is an important technique in which a thin film is deposited on the dielectric matrix by spraying a precursor solution on a heated surface. Spray pyrolysis has been applied to deposit a wide variety of thin films. These films were used in various devices such as solar cells, carbon solar cells, sensors, and solid oxide fuel cells, etc. It is observed that often the properties of deposited thin films depend on the preparation conditions. An extensive investigation of the effects of spray parameters on film quality is given to demonstrate the importance of the process of optimization. However, spray pyrolysis seems not useful due to poor quality of thin film, thermal decomposition, and vapor convection. The vapors are generated due to temperature difference, which restricts the source from binding with the substrate. In this paper, briefly study the spray pyrolysis techniques and using the same for metal coating done over polymers. Also, this study highlighted many research obstacles and presented future direction for research in developing new methodology using the inadequacies of the existing approaches.