Solid particle erosion studies of D-gun sprayed cermet coatings on ASTM A36 steel
by Vineet Shibe; Vikas Chawla
International Journal of Surface Science and Engineering (IJSURFSE), Vol. 12, No. 4, 2018

Abstract: Erosion studies were performed in simulated coal-fired boiler conditions with a view to compare the erosion behaviour of two different types of detonation gun (D-gun) sprayed cermet coating powders, i.e., WC-12%Co and Cr₃C₂-25%NiCr on ASTM A36 steel and bare (uncoated) ASTM A36 steel. During the erosion studies weight loss, erosion rates in terms of volume loss (mm³/g) and measurement of erosion profiles were determined utilising optical profilometer. All the two different types of D-gun sprayed cermet coatings had successfully protected the ASTM A36 steel from erosive wear at impingement angles of 45º, 60º and 90º. In the case of bare ASTM A36 steel specimens the solid particle erosion rates were maximal at an impingement angle of 45º that was reduced at an impingement angle of 60º and minimal at an impingement angle of 90º that is the typical erosive wear behaviour of ductile materials. WC-12%Co coated specimens exhibited erosive wear behaviour that is closer to the behaviour of ductile materials. Cr₃C₂-25%NiCr coated specimens exhibited the maximum volume erosion rate at an impingement angle of 90º which was reduced at an impact angle of 60º and minimum at an impingement angle of 45º hence depicted the typical behaviour of brittle materials.

Online publication date: Tue, 13-Nov-2018

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Surface Science and Engineering (IJSURFSE):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com