METHOD OF MODIFYING A METAL SUBSTRATE TO IMPROVE SURFACE COVERAGE OF A COATING

摘要

This application relates to a method of modifying the surface of a metal substrate to improve the surface coverage of a coating applied to the substrate. The method comprises heating at least the surface of the substrate to a temperature within the range of approximately 175 - 400° C; and applying at least one layer of the coating to the substrate. In one particular embodiment the substrate is heated to a temperature within the range of 200 - 350° C. The low temperature heating enhances the hydrophilicity of the metal substrate while avoiding the disadvantages of high temperature thermal oxidation.