Categories: 7th Semester

GTU BE 7th Semester 172107 Surface Coating Technology (Department Elective – I) Summer 2018 Question Paper

1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE – SEMESTER ?VII (OLD) – EXAMINATION ? SUMMER 2018
Subject Code:172107 Date:28/04/2018
Subject Name:Surface Coating Technology (Department Elective – I)
Time:02:30 PM to 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

Q.1 (a) Explain importance of surface engineering and basic aspects for the selection of
surface preparation method.
07
(b) Explain sputtering method of Physical vapour Deposition. 07

Q.2 (a) Explain chemical vapor deposition in detail. 07
(b) Explain working of shot peening process and advantages. 07
OR
(b) Compare sand blasting, shot blasting and hydro blasting process for surface
preparation.
07

Q.3 (a) Explain chromating and its factors affecting. 07
(b) Describe anodizing process and its applications. 07
OR
Q.3 (a) Describe the process steps for conversion coating conversion coating. 07
(b) Explain plasma spray coating method. Give advantages and applications. 07

Q.4 (a) Explain hot dip galvanizing process and process controlling factors. 07
(b) Explain working and setup of electroplating. 07
OR
Q.4 (a) Explain electroless plating and its types. 07
(b) What is ion implantation? Describe the use of ion beam implantation in surface
modification.
07

Q.5 (a) What is carburizing? Briefly discuss solid (pack) carburizing. 07
(b) What do you mean by diffusion coating? Explain the carbonitriding process. 07
OR
Q.5 (a) Critically compare the Boronizing and Boronitriding processes. 07
(b) Describe PVD by evaporation. Explain how Multicomponent deposition is
carried out in PVD.
07

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