Unit 1

Introduction to tribology and conventional surface engineering, outlines of conventional surface modification methods-physical vapour depositions, chemical vapourdeposition, Introduction to nano films, glancing angle deposition (GLAD)technique. Transparent polymer nanocomposites, silane coating, silica coating, Nanocomposite processing, melt blending, In situ synthesis, Optical, Thermomechanical and mechanical properties of the nano coatings.

Unit 2

Nanostructures by Ion Irradiation- Introduction, Implantation, Sputtering , Cleaning, roughening of surface for improving the adhesion of coatings, Ion beam assisted deposition (IBAD) and ion beam deposition (IBD) of monoatomic ions or clusters, microencapsulation, decorative and golden PVD coatings, concept of color, reactive gas flow, Influence of oxygen in the layers. Ion bombardment, TiN (ZrN) + Au coatings , nanostructured TiN/ZrN coatings, hardness and nanostructure of coatings , chromium nitride coatings, tantalum nitride (TaN) coatings , TiAl (N, C, O) coatings.

Unit 3

Introduction to nanolayered hard coatings, nanostructuring of transition-elements nitrides obtained by cathodic arc evaporation , plasma enhanced chemical vapor deposition, pulsed current in nano coatings. Nanopowders- instructions for use, defining the working conditions.
Characterization of coatings- hardness, adherence and internal stresses, mechanical behavior and machining performances.
Determining internal stresses by radius of curvature measurements (Stoney’s method), determining residual stresses using x-ray diffraction, high temperature oxidation resistance of nanocomposite coatings.

Course Objectives

• To impart knowledge of basic nanomaterials for surface engineering
• To introduce various nano-surface coating techniques and properties
• To facilitate material design and hard coatings based on nano techniques
• To familiarize with characterization techniques used for nano-surface engineering

Course Outcomes

• CO1: Understand various nano materials for surface engineering
• CO2: Understand surface engineering techniques and identify the appropriate manufacturing processes for nano coatings
• CO3: Understand ion based surface coatings, gases and environment for coatings
• CO4: Analyse the processes behavior for hard and nano coatings
• CO5: Select appropriate characterization techniques for nano surface engineering

CO – PO Mapping

Textbook(s)

• Nanomaterials and Surface Engineering, Edited by Jamal Takadoum, publisher: ISTE Ltd and John Wiley & Sons, Inc. 2009. ISBN 978-1-84821-151-31.

Reference(s)

• Nanomaterials and Surface Engineering, Jamal Takadoum (Editor), March 2010, Wiley

Evaluation Pattern