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Online Course

Surface Engineering for Corrosion and Wear Resistance Application

Indian Institute of Technology, Kharagpur and NPTEL via Swayam

37

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Overview

Wear and corrosion are the major causes of degradation of engineering components for structural applications. Among different ways of minimizing the probability of failure of components by wear or corrosion or improving its lifetime is by optimum designing of surface, may be termed as surface engineering. However, the properties achieved on the surface depend on the techniques to be applied, process parameters to be chosen and the surface characteristics (surface roughness, microstructure and composition) achieved thereafter. The present course encompasses (a) a brief introduction to the wear and corrosion and their classification, (b) surface microstructure and composition required for combating different modes of wear and corrosion, (c) classification and scopes of surface engineering, (d) principle of different modes of surface engineering, process parameters, advantages and disadvantages, (e) characterization and testing of surfaces and (f) engineering applications of surface engineering techniques. The course will offer training to the engineering students pursuing studies in the UG and PG level from Metallurgical engineering, mechanical engineering, materials science, physics and chemistry. 

Syllabus

Week 1  :  Introduction to materials, surface, thermodynamics of surface, surface dependent engineering properties
Week 2  :   Common surface initiated engineering failure; mechanism of surface degradation (wear, corrosion and high Temp. Oxidation).
Week 3  : Role of microstructure and materials behavior in controlling the surface dependent failure of components, importance of surface engineering, classification and scope of surface engineering of Materials. Introduction to surface modification and coating techniques.
Week 4  :  Conventional surface modification methods: flame hardening, induction hardening, carburizing, nitriding, diffusion assisted surface alloying.
Week 5  :  Advanced surface modification methods: Laser, Plasma and electron beam assisted surface modification. 
Week 6  :  Surface Coating by Chemical/electro-chemical Routes Electro/electroless deposition, anodizing, micro-arc oxidation
Week 7  :  Surface Coating by Physical Routes: Physical vapor deposition (Thermal evaporation, sputtering and Ion Plating), pulsed laser deposition, cathodic arc evaporation.
Week 8  :  Surface Coating by chemical Routes: Chemical vapor deposition, laser assisted chemical vapor deposition. 
Week 9  :  Hot dipping, (galvanizing, tinning, aluminizing, babitting, etc.)
Week 10  :  Thermal Spraying (flame spraying, HVOF spraying, wire arc spraying, kinetic spraying)
Week 11  :  Weld overlaying, laser surface cladding
Week 12  :  Surface characterization and Testing

Taught by

Prof. Indranil Manna and Prof. Jyotsna Dutta Majumder

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