Key mechanism of defence by hot dip galvanizing, Civil Engineering

Assignment Help:

Question

What is key mechanism of defence by hot dip galvanizing?

Answer

Hot dip galvanizing protects steel or iron from corrosion by-

(i) It figures a metallic zinc and zinc-iron alloy covering on top of steel surface. This zinc coating reacts with humidity in atmosphere to from zinc salts that act as an insulating layer for steel or iron.

(ii) Zinc is higher than steel or iron in galvanic series and when these different metals with unlike electrical potential are in contact, zinc anode corrodes and offers sacrificial guard to steel or iron and hence steel or iron is protected from corrosion.

 


Related Discussions:- Key mechanism of defence by hot dip galvanizing

What is absolute pressure, Absolute pressure is simply the addition of the ...

Absolute pressure is simply the addition of the observed gage pressure plus the value of the local atmospheric pressure.

Centroid, use of centroid in civil engineering

use of centroid in civil engineering

Solid mensuration, Ask question #MiniThe base of an isosceles triangle and ...

Ask question #MiniThe base of an isosceles triangle and the altitude drawn from one of the congruent sides are equal to 18cm and 15cm, respectively. Find the lengths of the sides o

Explain equation for change interval, Explain equation for Change Interval ...

Explain equation for Change Interval y = t + v / 2a + 64.4G Where:  y = length of yellow interval (sec)     t = driver perception/reaction time (1.0 sec generally used)

State average increase of pressure in the clay stratum, A building was to b...

A building was to be constructed on a clay stratum. Preliminary analysis showed a settlement of 60 mm in 6 years and an ultimate settlement of 250 mm. The average enhance of pressu

Relaxation losses in prestressing steels, Relaxation losses in prestressing...

Relaxation losses in prestressing steels The relaxation losses in prestressing steels vary with type of steel, initial prestress, age, and temperature and, therefore, shall be

Find out the joint distribution, Find out the joint distribution: Let ...

Find out the joint distribution: Let X I and X 2 be two independent random variables each distributed uniformly in the interval [ 0, a ], where a > 0 is a constant. Find out

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd