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Friday, December 21, 2012

EL3018 METAL FINISHING SYLLABUS | ANNA UNIVERSITY BTECH CHEMICAL AND ELECTROCHEMICAL ENGINEERING 8TH SEMESTER SYLLABUS REGULATION 2008 2011 2012-2013

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EL3018 METAL FINISHING SYLLABUS | ANNA UNIVERSITY BTECH CHEMICAL AND ELECTROCHEMICAL ENGINEERING 8TH SEMESTER SYLLABUS REGULATION 2008 2011 2012-2013 BELOW IS THE ANNA UNIVERSITY 8TH SEMESTER B.TECH CHEMICAL AND ELECTROCHEMICAL ENGINEERING DEPARTMENT SYLLABUS, TEXTBOOKS, REFERENCE BOOKS,EXAM PORTIONS,QUESTION BANK,PREVIOUS YEAR QUESTION PAPERS,MODEL QUESTION PAPERS, CLASS NOTES, IMPORTANT 2 MARKS, 8 MARKS, 16 MARKS TOPICS. IT IS APPLICABLE FOR ALL STUDENTS ADMITTED IN THE YEAR 2011 2012-2013 (ANNA UNIVERSITY CHENNAI,TRICHY,MADURAI, TIRUNELVELI,COIMBATORE), 2008 REGULATION OF ANNA UNIVERSITY CHENNAI AND STUDENTS ADMITTED IN ANNA UNIVERSITY CHENNAI DURING 2009

EL3018 METAL FINISHING L T P C
3 0 0 3
UNIT I SURFACE PREPARATION AND BASICS OF ELECTRO DEPOSITION 9
Faradays Laws – current efficiency – anodic and cathodic, electrode potential – Nernst
equation, reference electrode – polarisation of electrodes over voltage reactions. Metal
discharge from simple and complex salts. pre-treatment – mechanical – polishing – buffing,
buffing wheels – design – operation – belt polishing – blast finishing with glass beads –
barrel polishing. Chemical – surface preparation: vapor degreasing – ultrasonic cleaning –
pickling – rinsing – preparation of basis metals for plating.
UNIT II EVALUATION OF ELECTRO DEPOSITS 9
Plating bath constituents – types of formulations – acid – alkaline etc role of constituents –
operating conditions CD, temperature and addition agents etc. anodes – anode dissolutions
– trouble shooting – stripping analysis. Testing of Electro deposits for thickness, adhesion,
stress, corrosion, porosity, hardness, ductility and solderability. The use of Hull-cell in
plating. Measurements of pH, specific gravity, surface tension, conductivity, throwing power
and current efficiency of electroplating electrolytes.
UNIT III ELECTROPLATING OF ALLOYS AND OTHER PLATING METHODS 9
Alloy plating principles – deposition of Brass, Palladium – Nickel and lead tin alloys
electroforming – principles – pretreatments, operating conditions – application with respect
to copper and nickel electroless plating – principles application operating condition for
copper, tin, nickel, and gold. Heavy deposition of chromium. Barrel plating principle and
application, Continuous plating with respect to Zn and Sn. Brush plating. Hot dipping,
Spraying, Cladding and Vapour deposition.
75
UNIT IV ANODIZING 9
Anodizing: Anodizing of Aluminium, Principles, pretreatment, jigging. Sulphuric acid
process, operating conditions for decorative and protective anodizing, effect of impurities,
analysis for free acid and aluminium content, chromic acid process, operating conditions,
effect of impurities, colouring of anodized aluminium with organic dyes. Sealing in hot water
and dichromate solution. Testing of anodic film thickness by Eddy current method and
stripping method, coating weight – coating ratio.
UNIT V ENGINEERING ASPECTS OF ELECTRO DEPOSITION 9
Engineering aspects: Equipment selection – rectifiers – pretreatment equipments –
mechanical and chemical, automation, flooring materials for tanks and linings. Ventilation,
air pollution – rack design – bus bars. Filtration purification agitation. Heater design –
cooling of electrolytes. Effluent treatment and pollution control, costing.
TOTAL : 45 PERIODS
TEXT BOOKS
1. F.A. Lowenheim, “Modern Electroplating”, John Wiley and Sons Inc. USA, 3rd Ed.,
1963.
2. Durney L.J, “Electroplating Engineering Hand Book”, Springer, 4th edition, 1984.
3. E.Ranb and K.Miller, “Fundamentals of metal deposition” Elsevier Publishing company,
NewYork, 1967.
REFERENCES
1. “Metal Finishing Guidebook and Directory”, USA, Metal & Plastic Publications, 1970
2. Foulke and Crane, “Electro Plater’s Process Control” Hand Book, Reinhold Publishers,
1963.
3. V.F. Henley, “Anodic Oxidation of Metals”, Pergamon ,1st edition, 1982.

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