Preparation of sol-gel SiO2 coatings on steel and their corrosion resistanceIrina Stambolova, Stancho Yordanov, Lyuben Lakov, Sasho Vassilev, Vladimir Blaskov and Bojidar JivovMATEC Web Conf., 145 (2018) 05011DOI: https://doi.org/10.1051/matecconf/201814505011