Study of Anti-Corrosion Coating Effects with the Preceramic Materials and Active Fillers

Abstract

The ceramic materials have received attention as anti-corrosion coating materials due to their good chemical stability, the resistance of high temperature and pressure. However, the general ceramic materials have different coefficient of thermal expansion from metal substrates. We applied polycarbosilane (PCS) and polysiloxane as the preceramic materials for anti-corrosion coating on the carbon steel substrate (SA-210). The degree of shrinkage cracking of the preceramic materials can be modulated by the addition of active fillers and other composites. We also studied the anti-corrosion effects of the preceramic materials, alumina, sintering additives and active fillers by the various measurement methods: scanning electron microscope (SEM), energy dispersive spectrometer (EDS), X-ray diffraction (XRD), BET method, inductively coupled plasma – optical emission spectrometry (ICP-OES) analysis and thermal conductivity. The results revealed that the preceramic materials and active fillers had critical roles for anti-corrosion coating under high temperature oxidation conditions. Also, the results indicated that the combinations of the materials could be the strong potential as anti-corrosion coating materials in various industrial systems.