Open AccessChemical and mechanical tests on the SiO2-ZnO materials for protective coatings of industrial use
Author(s) -
AnaMaria Mocioiu,
Diana-Irinel Băilă,
Oana Cătălina Mocioiu
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1018/1/012008
Subject(s) - corrosion , materials science , galvanic cell , chemical resistance , caustic (mathematics) , fourier transform infrared spectroscopy , metallurgy , composite material , chemical engineering , physics , engineering , mathematical physics
Many industrial processes, such as chemical process and pharmaceuticals, use aggressive acidic and caustic solution which may result in an early failure of the components of plant. The various corrosion processes in harsh environments could be uniform corrosion, localized corrosion, galvanic corrosion, etc. In order to extend the life of components, a proper material selection is necessary. This direction is intended to address the behaviour of materials due to exposure in harsh environments. The main objective is to develop new vitreous coatings for different kind of materials as metals or glasses in order to protect them against acid attack. SiO 2 -ZnO materials were prepared by chemical route in order to be used as protective coatings. The SiO 2 -ZnO materials were investigated by infrared spectroscopy and differential thermal analysis in order to determine their structure and thermal characteristics. SEM and EDS measurements were performed to investigate their structure and morphology. The chemical resistance tests in acid media (HCl and HF) were followed based on STAS and ISO standards and the extraction solutions were tested by ICP-MS in order to identify elements lost during tests. Mechanical tests were performed.