Study on the corrosion mechanism of HVOF silicate glass coating in 36% HCl and 10 mol/L NaOH solution
J. ZHAN,G. M. CHEN,Q. ZHANG
Optoelectronics and Advanced Materials – Rapid Communications
Abstract
In the study, on the basis of good anticorrosion capability about silicate glass, silicate glass coating was sprayed by High Velocity Oxygen Fuel(HVOF) and corrosion mechanism in 36% HCl and 10 mol/L NaOH solution were studied. Scanning Electron Microscope(SEM), Energy Dispersive X-Ray analysis(EDX), X-Ray Diffraction(XRD) and corrosion dip experiment were carried out to study coating composition and corrosion process. The result shows that silicate glass coating is entirely noncrystallizable. Silicate glass coating has good anticorrosion capability in the condition of thick hydrochloric acid and strong canstic. The corrosion mechanism of silicate glass coating is similar to glass.
Key words:HVOF, Silicate glass coating, Corrosion, Alkali metals
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