1 Application of composite conducting polymers for improving the corrosion behavior of various substrates: A Review https://jourcc.com/index.php/jourcc/article/view/jcc247 10.29252/jcc.2.4.7 20.1001.1.26765837.2020.2.5.7.1 1 One of the most important problems in the manufacturing industry is metal corrosion. Recently, conductive polymers (CPs) have attracted attention due to their economic viability and widespread industrial applications. Upon adsorption, long-chain carbon bonds of polymers provide a blockage for large surface areas of corroding metals. The adsorbed thin films create a barrier between the surrounding environment and the metal substrate. Polypyrrole (PPy), polyaniline (PANI), and polythiophene (PTh) are conducting polymers that are utilized to protect metals and metal alloys against corrosion. A proper selection of synthesis parameters for CPs can improve the anticorrosion behavior of the coatings for metals and metal alloys. This paper has an overview of conducting polymer composite coatings on substrates based on steel, copper, magnesium, aluminum, and their alloys. 228 240 Leila Bazli Iran University of Science and Technology Iran leilabazli64@gmail.com Mohammad Yusuf Universiti Teknologi PETRONAS Malaysia info@jourcc.com Ali Farahani Amirkabir University of Technology Iran info@jourcc.com Morvarid Kiamarzi Amirkabir University of Technology Iran info@jourcc.com Zahra Seyedhosseini Amirkabir University of Technology Iran info@jourcc.com Mehran Nezhadmansari Sharif University of Technology Iran info@jourcc.com Maryam Aliasghari Shahre Rey Branch, Islamic Azad University (IAU) Iran info@jourcc.com Marjan Iranpoor University of Tehran Iran info@jourcc.com Corrosion resistance Polyaniline Polypyrrole Polythiophene Metal substrates Article7.pdf [1] B. Yao, G. Wang, J. Ye, X. Li, Corrosion inhibition of carbon steel by polyaniline nanofibers, Materials Letters 62(12-13) (2008) 1775-1778. ##[2] M. Hosseini, M. 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