id	keyword
bjmsr-2509	ppy
bjmsr-2509	corrosion
bjmsr-2509	polypyrrole
bjmsr-2509	coating
bjmsr-2509	et al
bjmsr-2509	steel
bjmsr-2509	protection
bjmsr-2509	journal
bjmsr-2509	surface
bjmsr-2509	acid
bjmsr-2509	potential
bjmsr-2509	iron