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Anticorrosion pigment based on calcium titanate with a perovskite structure

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Purpose ‐ To synthesise calcium titanate with a perovskite structure as an anticorrosion pigment for metal protecting paints. Design/methodology/approach ‐ Calcium titanate was synthesised from titanium dioxide and calcium carbonate at high temperature. The pigment obtained was characterised by means of X-ray diffraction, particle size distribution measurement and scanning electron microscopy. The pigment obtained was further characterised with regard to the parameters required for paint formulation; its specific mass was determined by oil consumption and critical pigment volume concentration. The synthesised calcium titanate was used to prepare epoxy coatings with varying contents of the anticorrosion pigment. The coating was tested for physical-mechanical properties and in corrosive atmospheres. The results were compared with titanium dioxide that served as a starting material for calcium titanate preparation. Findings ‐ Calcium titanate was prepared from materials that do not add any impurities to the anticorrosion properties of the pigment. It was identified that calcium titanate of perovskite structure is a highly efficient anticorrosion pigment for paints. Practical implications ‐ Calcium titanate can be utilised for the preparation of anticorrosion paints to protect metal bases from corrosion. Originality/value ‐ The method of synthesising calcium titanate as an anticorrosion pigment is new. The literature has not yet described the use of calcium titanate as a pigment with inhibitive properties in paints. From an ecologic standpoint, the application of a new anticorrosion pigment for paints presents a highly positive trend.
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Keywords: Coatings; Corrosion inhibitors; Paints

Document Type: Research Article

Publication date: May 29, 2007

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