Subject Code: ML3L002	Name: Corrosion and Surface Engineering	L-T-P: 3-0-0	Credit: 3
Pre-Requisites: Thermodynamics of Materials (course)
Introduction; electrochemical and environmental aspects of corrosion; types of corrosion (galvanic, pitting, crevice, fretting etc); Corrosion testing; material specific corrosion (metals and alloys, plastics and ceramics); corrosion prevention; case studies on environment specific degradation of materials. Introduction: Engineering components, surface dependent properties and failures, importance and scope of surface engineering, Surface and surface energy: Structure and types of interfaces, surface energy and related equations. Surface engineering: classification, definition, scope and general principles. Surface engineering by material removal: Cleaning, pickling, etching, grinding, polishing, buffing / puffing (techniques employed, its principle). Role and estimate of surface roughness. Surface engineering by material addition: From liquid bath - hot dipping (principle and its application with examples).: Electrodeposition/plating (theory and its scope of application).Surface modification of steel and non ferrous components: Pack carburizing (principle and scope of application). Surface modification using liquid/molten bath: Cyaniding, liquid carburizing (diffusion from liquid state) (principle and scope of application). Surface modification using gaseous medium: Nitriding carbonitriding (diffusion from gaseous state) (principle and scope of application). Surface engineering by energy beams: Laser assisted microstructural modification –Laser assisted compositional modification – surface cladding, composite surfacing and similar techniques. Surface engineering by energy beams: Electron beam assisted modification and joining. Ion beam assisted microstructure and compositional modification. Surface engineering by spray techniques: Flame spray (principle and scope of application).: Plasma coating (principle and scope of application). Surface engineering by spray techniques: HVOF, cold spray (principle and scope of application). Characterization of surface microstructure and properties (name of the techniques and brief operating principle). Evaporation - Thermal / Electron beam, Sputter deposition of thin films & coatings – DC & RF, Sputter deposition of thin films & coatings –Chemical vapor deposition and PECVD, Plasma and ion beam assisted surface modification, Surface modification by Ion implantation and Ion beam mixing.
Text/Reference Books: M. G. Fontana, Corrosion Engineering, Tata McGraw-Hill Education, 2005. Surface Engineering & Heat Treatment By: P.H Morton I.I.T, Brooke field, 1991. Metals Handbook Ninth Edition, Vol.5, Surface Cleaning,Finishing & Coating, ASM, Metals Park Ohio, 1982.