Microarc Oxidation of the Gas-Thermal Aluminum Coatings Deposited on Polymeric Materials

Abstract

The modes of hypersonic metallization for the formation of coatings of aluminum on polymeric materials are selected. An empirical dependence of the sputtered aluminum particles size and the thermal-oxidative degradation temperature of the polymer is obtained. The microarc oxidation equipment has been developed for the formation of ceramic oxide coatings on the surface of aluminum gas-thermal coatings. It is found that the largest thickness of ceramic-oxide coatings is achieved when the ratio of air and propane in the atomizing air-propane mixture is from 15:1 to 18:1. The material of the sublayer (Ni) is determined, which ensures the maximum adhesion of aluminum coatings to polymers.

Keywords

• polymers
• hypersonic metallization
• microarc oxidation
• ceramic oxide coatings