Download GTU B.Tech 2020 Winter 7th Sem 2172107 Surface Coating Technology Question Paper

Download GTU (Gujarat Technological University Ahmedabad) B.Tech/BE (Bachelor of Technology/ Bachelor of Engineering) 2020 Winter 7th Sem 2172107 Surface Coating Technology Previous Question Paper

Seat No.: ________
Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE- SEMESTER?VII (NEW) EXAMINATION ? WINTER 2020
Subject Code:2172107 Date:21/01/2021
Subject Name:Surface Coating Technology
Time:10:30 AM TO 12:30 PM Total Marks: 56
Instructions:
1. Attempt any FOUR questions out of EIGHT questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.


MARKS
Q.1 (a) Discuss the importance of surface engineering.
03

(b) Explain sand blasting process for surface preparation.
04

(c) Give a detailed classification of coatings with properties and applications of
07


e
ach.
Q.2 (a) Give applications and limitations of anodizing.
03

(b) What is anodizing? Explain why anodizing is best suited for aluminum.
04

(c) What is phosphating? Explain the phosphating process.
07




Q.3 (a) Explain, how properties get improved with carburizing.
03

(b) Explain factors affecting electrodeposition.
04

(c) Explain galvanizing in detail.
07




Q.4 (a) Mention galvanizing process controlling factors.
03

(b) Write short note on chromizing.
04

(c) Discuss electroplating process with neat sketch of setup used.
07
Q.5 (a) What is Boronizing process? List out applications.
03

(b) What do you mean by Surface composites? Explain how they differ from
04
normal composites.

(c) Explain sputtering method of Physical vapour Deposition.
07



Q.6 (a) Give the difference between physical vapor deposition and chemical vapor
03
deposition.

(b) Explain how multicomponent deposition is carried out in physical vapor
04
deposition.

(c) Explain ion implantation method.
07
Q.7 (a) Mention factors affecting bond strength in thermal spray coating.
03

(b) Explain effect of spray gun on coating structure and properties.
04

(c) Explain plasma spray coating method. Give advantages and applications.
07



Q.8 (a) Mention the advantages of thermal spraying over other coating techniques.
03
(b) Briefly discuss solid (pack) carburizing.
04
(c) Explain the thermal spray coating processes. Give its applications.
07

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