The Influence of the Type of Electrolyte in the Modifying Solution on the Protective Properties of Vinyltrimethoysilane/Ethanol-Based Coatings Formed on Stainless Steel X20Cr13

Abstract

The paper reports the results of the examination of the protective properties of silane coatings based on vinyltrimethoxysilane (VTMS) and ethanol (EtOH), doped with the following electrolytes: acetic acid (AcOH), lithium perchlorate LiClO4, sulphuric acid (VI) H2SO4 and ammonia NH3. The coatings were deposited on stainless steel X20Cr13 by the sol–gel dip-coating method. The obtained VTMS/EtOH/Electrolyte coatings were characterized in terms of corrosion resistance, surface morphology and adhesion to the steel substrate. Corrosion tests were conducted in sulphate media acidified up to pH = 2 with and without chloride ions Cl−, respectively. The effectiveness of corrosion protection was determined using potentiometric curves. It has been demonstrated that the coatings under study slow down the processes of corrosion of the steel substrate, thus effectively protecting it against corrosion.

The Influence of the Solvent on the Corrosion Resistance of Vinyltrimethoxysilane Based Coatings Deposited on X20Cr13 Steel

“…After the solution had changed its consistency, the samples were immersed for approximately 20 minutes. The methodology of applying silane coatings was developed in the publication [55]. The coated samples were dried for 1 day at room temperature in a silica gel desiccator.…”

Detection and Analysis of Corrosion and Contact Resistance Faults of TiN and CrN Coatings on 410 Stainless Steel as Bipolar Plates in PEM Fuel Cells

“…Due to their superior mechanical properties and low gas permeation, stainless steels have been more commonly used in research [10]. However, the corrosion phenomenon and its associated ICR are the most challenging issues in metal bipolar plates [11,12]. In general, when SS plates are exposed to air at the anode, a thin inactive oxide layer (thickness~1-3 nm) forms, increasing the risk of PEM contamination and negatively affecting the catalyst layer activity [13].…”

Special Issue: Corrosion Properties and Mechanism of Steels

“…The behavior of galvanized steel exposed to strong alkaline solutions with a fixed concentration of sulfate ions of 0.04 M is studied in detail. The coatings formed on stainless steel X20Cr13 were investigated by Kucharczyk et al [ 9 ]. The article reports the results of the examination of the protective properties of silane coatings based on vinyltrimethoxysilane and ethanol, doped with the following electrolytes: acetic acid, lithium perchlorate LiClO 4 , sulphuric acid H 2 SO 4 and ammonia NH 3 .…”