Enamel (glassy) coatings for steel protection against high temperature corrosion

Abstract

Vitreous ceramic-like enamel coatings can be applied onto low-alloy and carbon steel components of various configurations, including tubulars, by different cost-effective technological methods achieving thicknesses up to 300 µm. Corrosion resistance of the enamel coatings in acidic environments, boiling brines and high temperaturehigh pressure (HT-HP) steam with a presence of CO 2 -H 2 S containing gases simulating some processes in refinery, oil & gas and geothermal production was tested and evaluated. Specifically, the testing in simulating HT-HP downhole production conditions was conducted for the enamel coatings for the first time. Microstructural examination and analysis of the obtained enamel glassy coatings revealed their insignificant compositional and structural degradation. A high level of steel protection by enamelling in considered environments demonstrated these coatings' potential for different corrosion-related industrial processes.

Porcelain Enamel Coatings for Building Façades

“…The glassy nature of enamel contributes to its high resistance to chemicals and abrasion. Moreover, they guarantee good protection against corrosion when deposited on a steel substrate [18][19][20], thanks to the strong adhesion between the coating and the same substrate [21,22]. Enamel coatings have a glossy appearance, and several brilliant colors are now available, enabling the creation of surfaces with diverse and appealing visual characteristics [23,24].…”