Creating a mixture of gases for ion-plasma technologies
DOI:
https://doi.org/10.15587/1729-4061.2014.21873Keywords:
gas mixtures, ion-plasma technology, partial gas pressure, gas mixture generator.Abstract
A method for creating gas mixtures, intended for producing complex composition coatings in ion-plasma installations is proposed. The method is based on creating in a mixing chamber predetermined values of partial pressures of gas components. A peculiar feature of the method is a cyclic purging of the mixing chamber to create therein an atmosphere, consisting of no less than 99.9 % of one mixture component. Hereafter, according to the given percentage of gases in the mixture gas components are consistently supplied to the respective partial pressures.
The method is characterized by simplicity of implementation. An industrially applicable gas mixture generator (for case of three gases) was designed on its basis. The hardware and software of generator management system are developed. The gas mixture generator is characterized by high productivity of creating gas mixtures and the exact ratio of component in a mixture (the error of each component does not exceed 0.1 %). The application of the designed gas mixture generator in the processes of ion-plasma processing will provide obtaining the coatings with optimal properties.
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